Magnetic Resonance Imaging: Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.Magnetic Resonance Spectroscopy: Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).Magnetic Resonance Angiography: Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.Magnetic Resonance Imaging, Cine: A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo MRI sequence with retrospective ECG-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualized.Contrast Media: Substances used to allow enhanced visualization of tissues.Diffusion Magnetic Resonance Imaging: A diagnostic technique that incorporates the measurement of molecular diffusion (such as water or metabolites) for tissue assessment by MRI. The degree of molecular movement can be measured by changes of apparent diffusion coefficient (ADC) with time, as reflected by tissue microstructure. Diffusion MRI has been used to study BRAIN ISCHEMIA and tumor response to treatment.Brain: The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.Gadolinium DTPA: A complex of gadolinium with a chelating agent, diethylenetriamine penta-acetic acid (DTPA see PENTETIC ACID), that is given to enhance the image in cranial and spinal MRIs. (From Martindale, The Extra Pharmacopoeia, 30th ed, p706)Nuclear Magnetic Resonance, Biomolecular: NMR spectroscopy on small- to medium-size biological macromolecules. This is often used for structural investigation of proteins and nucleic acids, and often involves more than one isotope.Gadolinium: Gadolinium. An element of the rare earth family of metals. It has the atomic symbol Gd, atomic number 64, and atomic weight 157.25. Its oxide is used in the control rods of some nuclear reactors.Brain Mapping: Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.Image Processing, Computer-Assisted: A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.Surface Plasmon Resonance: A biosensing technique in which biomolecules capable of binding to specific analytes or ligands are first immobilized on one side of a metallic film. Light is then focused on the opposite side of the film to excite the surface plasmons, that is, the oscillations of free electrons propagating along the film's surface. The refractive index of light reflecting off this surface is measured. When the immobilized biomolecules are bound by their ligands, an alteration in surface plasmons on the opposite side of the film is created which is directly proportional to the change in bound, or adsorbed, mass. Binding is measured by changes in the refractive index. The technique is used to study biomolecular interactions, such as antigen-antibody binding.Image Interpretation, Computer-Assisted: Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.Image Enhancement: Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.Electron Spin Resonance Spectroscopy: A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.Imaging, Three-Dimensional: The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.Magnetic Resonance Imaging, Interventional: Minimally invasive procedures guided with the aid of magnetic resonance imaging to visualize tissue structures.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Fluorescence Resonance Energy Transfer: A type of FLUORESCENCE SPECTROSCOPY using two FLUORESCENT DYES with overlapping emission and absorption spectra, which is used to indicate proximity of labeled molecules. This technique is useful for studying interactions of molecules and PROTEIN FOLDING.Sensitivity and Specificity: Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Cholangiopancreatography, Magnetic Resonance: Non-invasive diagnostic technique for visualizing the PANCREATIC DUCTS and BILE DUCTS without the use of injected CONTRAST MEDIA or x-ray. MRI scans provide excellent sensitivity for duct dilatation, biliary stricture, and intraductal abnormalities.Protons: Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion.Oxygen: An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.Predictive Value of Tests: In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.Creatine: An amino acid that occurs in vertebrate tissues and in urine. In muscle tissue, creatine generally occurs as phosphocreatine. Creatine is excreted as CREATININE in the urine.Phosphocreatine: An endogenous substance found mainly in skeletal muscle of vertebrates. It has been tried in the treatment of cardiac disorders and has been added to cardioplegic solutions. (Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1996)Functional Laterality: Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Brain Diseases: Pathologic conditions affecting the BRAIN, which is composed of the intracranial components of the CENTRAL NERVOUS SYSTEM. This includes (but is not limited to) the CEREBRAL CORTEX; intracranial white matter; BASAL GANGLIA; THALAMUS; HYPOTHALAMUS; BRAIN STEM; and CEREBELLUM.Organometallic Compounds: A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)Echo-Planar Imaging: A type of MAGNETIC RESONANCE IMAGING that uses only one nuclear spin excitation per image and therefore can obtain images in a fraction of a second rather than the minutes required in traditional MRI techniques. It is used in a variety of medical and scientific applications.Cerebral Cortex: The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulchi. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.Magnetite Nanoparticles: Synthesized magnetic particles under 100 nanometers possessing many biomedical applications including DRUG DELIVERY SYSTEMS and CONTRAST AGENTS. The particles are usually coated with a variety of polymeric compounds.Diagnostic Imaging: Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy.Choline: A basic constituent of lecithin that is found in many plants and animal organs. It is important as a precursor of acetylcholine, as a methyl donor in various metabolic processes, and in lipid metabolism.Aspartic Acid: One of the non-essential amino acids commonly occurring in the L-form. It is found in animals and plants, especially in sugar cane and sugar beets. It may be a neurotransmitter.Algorithms: A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.Atrophy: Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes.Frontal Lobe: The part of the cerebral hemisphere anterior to the central sulcus, and anterior and superior to the lateral sulcus.Ferrosoferric Oxide: Iron (II,III) oxide (Fe3O4). It is a black ore of IRON that forms opaque crystals and exerts strong magnetism.Temporal Lobe: Lower lateral part of the cerebral hemisphere responsible for auditory, olfactory, and semantic processing. It is located inferior to the lateral fissure and anterior to the OCCIPITAL LOBE.Brain Neoplasms: Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain.Gyrus Cinguli: One of the convolutions on the medial surface of the CEREBRAL HEMISPHERES. It surrounds the rostral part of the brain and CORPUS CALLOSUM and forms part of the LIMBIC SYSTEM.Prospective Studies: Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.Artifacts: Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.Photic Stimulation: Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.Observer Variation: The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).Neuropsychological Tests: Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.Carbon Isotopes: Stable carbon atoms that have the same atomic number as the element carbon, but differ in atomic weight. C-13 is a stable carbon isotope.Phantoms, Imaging: Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)Fluorine: A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as flouride (FLUORIDES) to prevent dental caries.Phosphorus: A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions.Spin Labels: Molecules which contain an atom or a group of atoms exhibiting an unpaired electron spin that can be detected by electron spin resonance spectroscopy and can be bonded to another molecule. (McGraw-Hill Dictionary of Chemical and Technical Terms, 4th ed)Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Parietal Lobe: Upper central part of the cerebral hemisphere. It is located posterior to central sulcus, anterior to the OCCIPITAL LOBE, and superior to the TEMPORAL LOBES.Prefrontal Cortex: The rostral part of the frontal lobe, bounded by the inferior precentral fissure in humans, which receives projection fibers from the MEDIODORSAL NUCLEUS OF THE THALAMUS. The prefrontal cortex receives afferent fibers from numerous structures of the DIENCEPHALON; MESENCEPHALON; and LIMBIC SYSTEM as well as cortical afferents of visual, auditory, and somatic origin.Protein Conformation: The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).Feasibility Studies: Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.Magnetics: The study of MAGNETIC PHENOMENA.Severity of Illness Index: Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.Cerebrovascular Circulation: The circulation of blood through the BLOOD VESSELS of the BRAIN.Spectrum Analysis, Raman: Analysis of the intensity of Raman scattering of monochromatic light as a function of frequency of the scattered light.Ferric Compounds: Inorganic or organic compounds containing trivalent iron.Nerve Net: A meshlike structure composed of interconnecting nerve cells that are separated at the synaptic junction or joined to one another by cytoplasmic processes. In invertebrates, for example, the nerve net allows nerve impulses to spread over a wide area of the net because synapses can pass information in any direction.Occipital Lobe: Posterior portion of the CEREBRAL HEMISPHERES responsible for processing visual sensory information. It is located posterior to the parieto-occipital sulcus and extends to the preoccipital notch.Neural Pathways: Neural tracts connecting one part of the nervous system with another.Models, Molecular: Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.Hydrogen-Ion Concentration: The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Analysis of Variance: A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.Myocardium: The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow.Functional Neuroimaging: Methods for visualizing REGIONAL BLOOD FLOW, metabolic, electrical, or other physiological activities in the CENTRAL NERVOUS SYSTEM using various imaging modalities.Reference Values: The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.Positron-Emission Tomography: An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Neuroimaging: Non-invasive methods of visualizing the CENTRAL NERVOUS SYSTEM, especially the brain, by various imaging modalities.Follow-Up Studies: Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.Knee Joint: A synovial hinge connection formed between the bones of the FEMUR; TIBIA; and PATELLA.Retrospective Studies: Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.Deuterium: Deuterium. The stable isotope of hydrogen. It has one neutron and one proton in the nucleus.Anatomy, Cross-Sectional: Descriptive anatomy based on three-dimensional imaging (IMAGING, THREE-DIMENSIONAL) of the body, organs, and structures using a series of computer multiplane sections, displayed by transverse, coronal, and sagittal analyses. It is essential to accurate interpretation by the radiologist of such techniques as ultrasonic diagnosis, MAGNETIC RESONANCE IMAGING, and computed tomography (TOMOGRAPHY, X-RAY COMPUTED). (From Lane & Sharfaei, Modern Sectional Anatomy, 1992, Preface)Dominance, Cerebral: Dominance of one cerebral hemisphere over the other in cerebral functions.Case-Control Studies: Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.Molecular Conformation: The characteristic three-dimensional shape of a molecule.Anisotropy: A physical property showing different values in relation to the direction in or along which the measurement is made. The physical property may be with regard to thermal or electric conductivity or light refraction. In crystallography, it describes crystals whose index of refraction varies with the direction of the incident light. It is also called acolotropy and colotropy. The opposite of anisotropy is isotropy wherein the same values characterize the object when measured along axes in all directions.Reaction Time: The time from the onset of a stimulus until a response is observed.Meglumine: 1-Deoxy-1-(methylamino)-D-glucitol. A derivative of sorbitol in which the hydroxyl group in position 1 is replaced by a methylamino group. Often used in conjunction with iodinated organic compounds as contrast medium.Edema, Cardiac: Abnormal fluid retention by the body due to impaired cardiac function or heart failure. It is usually characterized by increase in venous and capillary pressure, and swollen legs when standing. It is different from the generalized edema caused by renal dysfunction (NEPHROTIC SYNDROME).Ventricular Function, Left: The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.Whole Body Imaging: The creation of a visual display of the inside of the entire body of a human or animal for the purposes of diagnostic evaluation. This is most commonly achieved by using MAGNETIC RESONANCE IMAGING; or POSITRON EMISSION TOMOGRAPHY.Solutions: The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed)Pentetic Acid: An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.Stroke Volume: The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.Protein Binding: The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.Neurosurgical Procedures: Surgery performed on the nervous system or its parts.Heart Ventricles: The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.Spinal Cord Diseases: Pathologic conditions which feature SPINAL CORD damage or dysfunction, including disorders involving the meninges and perimeningeal spaces surrounding the spinal cord. Traumatic injuries, vascular diseases, infections, and inflammatory/autoimmune processes may affect the spinal cord.Amygdala: Almond-shaped group of basal nuclei anterior to the INFERIOR HORN OF THE LATERAL VENTRICLE of the TEMPORAL LOBE. The amygdala is part of the limbic system.Nitrogen Isotopes: Stable nitrogen atoms that have the same atomic number as the element nitrogen, but differ in atomic weight. N-15 is a stable nitrogen isotope.Diffusion Tensor Imaging: The use of diffusion ANISOTROPY data from diffusion magnetic resonance imaging results to construct images based on the direction of the faster diffusing molecules.Nerve Fibers, Myelinated: A class of nerve fibers as defined by their structure, specifically the nerve sheath arrangement. The AXONS of the myelinated nerve fibers are completely encased in a MYELIN SHEATH. They are fibers of relatively large and varied diameters. Their NEURAL CONDUCTION rates are faster than those of the unmyelinated nerve fibers (NERVE FIBERS, UNMYELINATED). Myelinated nerve fibers are present in somatic and autonomic nerves.Hydrogen: The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.Fourier Analysis: Analysis based on the mathematical function first formulated by Jean-Baptiste-Joseph Fourier in 1807. The function, known as the Fourier transform, describes the sinusoidal pattern of any fluctuating pattern in the physical world in terms of its amplitude and its phase. It has broad applications in biomedicine, e.g., analysis of the x-ray crystallography data pivotal in identifying the double helical nature of DNA and in analysis of other molecules, including viruses, and the modified back-projection algorithm universally used in computerized tomography imaging, etc. (From Segen, The Dictionary of Modern Medicine, 1992)Cerebral Infarction: The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction).Elasticity Imaging Techniques: Non-invasive imaging methods based on the mechanical response of an object to a vibrational or impulsive force. It is used for determining the viscoelastic properties of tissue, and thereby differentiating soft from hard inclusions in tissue such as microcalcifications, and some cancer lesions. Most techniques use ultrasound to create the images - eliciting the response with an ultrasonic radiation force and/or recording displacements of the tissue by Doppler ultrasonography.Signal-To-Noise Ratio: The comparison of the quantity of meaningful data to the irrelevant or incorrect data.Disease Models, Animal: Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.Cognition: Intellectual or mental process whereby an organism obtains knowledge.Basal Ganglia: Large subcortical nuclear masses derived from the telencephalon and located in the basal regions of the cerebral hemispheres.Disease Progression: The worsening of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis.Kinetics: The rate dynamics in chemical or physical systems.Linear Models: Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Myocardial Perfusion Imaging: The creation and display of functional images showing where the blood is flowing into the MYOCARDIUM by following over time the distribution of tracers injected into the blood stream.Visual Cortex: Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS.Cardiomyopathies: A group of diseases in which the dominant feature is the involvement of the CARDIAC MUSCLE itself. Cardiomyopathies are classified according to their predominant pathophysiological features (DILATED CARDIOMYOPATHY; HYPERTROPHIC CARDIOMYOPATHY; RESTRICTIVE CARDIOMYOPATHY) or their etiological/pathological factors (CARDIOMYOPATHY, ALCOHOLIC; ENDOCARDIAL FIBROELASTOSIS).Computer Simulation: Computer-based representation of physical systems and phenomena such as chemical processes.Meningeal Neoplasms: Benign and malignant neoplastic processes that arise from or secondarily involve the meningeal coverings of the brain and spinal cord.Meningioma: A relatively common neoplasm of the CENTRAL NERVOUS SYSTEM that arises from arachnoidal cells. The majority are well differentiated vascular tumors which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and SPINAL CANAL. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2056-7)Cartilage, Articular: A protective layer of firm, flexible cartilage over the articulating ends of bones. It provides a smooth surface for joint movement, protecting the ends of long bones from wear at points of contact.Ultrasonography: The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.Glioma: Benign and malignant central nervous system neoplasms derived from glial cells (i.e., astrocytes, oligodendrocytes, and ependymocytes). Astrocytes may give rise to astrocytomas (ASTROCYTOMA) or glioblastoma multiforme (see GLIOBLASTOMA). Oligodendrocytes give rise to oligodendrogliomas (OLIGODENDROGLIOMA) and ependymocytes may undergo transformation to become EPENDYMOMA; CHOROID PLEXUS NEOPLASMS; or colloid cysts of the third ventricle. (From Escourolle et al., Manual of Basic Neuropathology, 2nd ed, p21)Corpus Callosum: Broad plate of dense myelinated fibers that reciprocally interconnect regions of the cortex in all lobes with corresponding regions of the opposite hemisphere. The corpus callosum is located deep in the longitudinal fissure.Organ Size: The measurement of an organ in volume, mass, or heaviness.Inositol: An isomer of glucose that has traditionally been considered to be a B vitamin although it has an uncertain status as a vitamin and a deficiency syndrome has not been identified in man. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1379) Inositol phospholipids are important in signal transduction.Phosphates: Inorganic salts of phosphoric acid.Molecular Imaging: The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; FLUORESCENCE IMAGING; and MICROSCOPY.Binding Sites: The parts of a macromolecule that directly participate in its specific combination with another molecule.Psychomotor Performance: The coordination of a sensory or ideational (cognitive) process and a motor activity.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.Diffusion: The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.Cell Tracking: Non-invasive imaging of cells that have been labeled non-destructively, such as with nanoemulsions or reporter genes that can be detected by molecular imaging, to monitor their location, viability, cell lineage expansion, response to drugs, movement, or other behaviors in vivo.Preoperative Care: Care given during the period prior to undergoing surgery when psychological and physical preparations are made according to the special needs of the individual patient. This period spans the time between admission to the hospital to the time the surgery begins. (From Dictionary of Health Services Management, 2d ed)Lumbar Vertebrae: VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.Cognition Disorders: Disturbances in mental processes related to learning, thinking, reasoning, and judgment.Emotions: Those affective states which can be experienced and have arousing and motivational properties.Heterocyclic Compounds: Ring compounds having atoms other than carbon in their nuclei. (Grant & Hackh's Chemical Dictionary, 5th ed)Equipment Design: Methods of creating machines and devices.Nanoparticles: Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.Energy Metabolism: The chemical reactions involved in the production and utilization of various forms of energy in cells.Muscle, Skeletal: A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.Helium: Helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics. (Dorland, 27th ed)Cerebellum: The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.Multiple Sclerosis: An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)Iron: A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.Dextrans: A group of glucose polymers made by certain bacteria. Dextrans are used therapeutically as plasma volume expanders and anticoagulants. They are also commonly used in biological experimentation and in industry for a wide variety of purposes.Brain Ischemia: Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION.Brain Chemistry: Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states.Edema: Abnormal fluid accumulation in TISSUES or body cavities. Most cases of edema are present under the SKIN in SUBCUTANEOUS TISSUE.Osteoarthritis, Knee: Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019)Tomography, Emission-Computed, Single-Photon: A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Protein Structure, Secondary: The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to alpha helices, beta strands (which align to form beta sheets) or other types of coils. This is the first folding level of protein conformation.Lactic Acid: A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed)Statistics as Topic: The science and art of collecting, summarizing, and analyzing data that are subject to random variation. The term is also applied to the data themselves and to the summarization of the data.Hippocampus: A curved elevation of GRAY MATTER extending the entire length of the floor of the TEMPORAL HORN of the LATERAL VENTRICLE (see also TEMPORAL LOBE). The hippocampus proper, subiculum, and DENTATE GYRUS constitute the hippocampal formation. Sometimes authors include the ENTORHINAL CORTEX in the hippocampal formation.Cysts: Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.Synovitis: Inflammation of a synovial membrane. It is usually painful, particularly on motion, and is characterized by a fluctuating swelling due to effusion within a synovial sac. (Dorland, 27th ed)Cardiac-Gated Imaging Techniques: Timing the acquisition of imaging data to specific points in the cardiac cycle to minimize image blurring and other motion artifacts.Dura Mater: The outermost of the three MENINGES, a fibrous membrane of connective tissue that covers the brain and the spinal cord.Attention: Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.Biopsy: Removal and pathologic examination of specimens in the form of small pieces of tissue from the living body.Cerebrum: Derived from TELENCEPHALON, cerebrum is composed of a right and a left hemisphere. Each contains an outer cerebral cortex and a subcortical basal ganglia. The cerebrum includes all parts within the skull except the MEDULLA OBLONGATA, the PONS, and the CEREBELLUM. Cerebral functions include sensorimotor, emotional, and intellectual activities.Mass Spectrometry: An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.Cardiac Imaging Techniques: Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.Thalamus: Paired bodies containing mostly GRAY MATTER and forming part of the lateral wall of the THIRD VENTRICLE of the brain.Prognosis: A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.Temperature: The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.Pattern Recognition, Visual: Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs.Energy Transfer: The transfer of energy of a given form among different scales of motion. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). It includes the transfer of kinetic energy and the transfer of chemical energy. The transfer of chemical energy from one molecule to another depends on proximity of molecules so it is often used as in techniques to measure distance such as the use of FORSTER RESONANCE ENERGY TRANSFER.Cervical Vertebrae: The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK.Syringomyelia: Longitudinal cavities in the spinal cord, most often in the cervical region, which may extend for multiple spinal levels. The cavities are lined by dense, gliogenous tissue and may be associated with SPINAL CORD NEOPLASMS; spinal cord traumatic injuries; and vascular malformations. Syringomyelia is marked clinically by pain and PARESTHESIA, muscular atrophy of the hands, and analgesia with thermoanesthesia of the hands and arms, but with the tactile sense preserved (sensory dissociation). Lower extremity spasticity and incontinence may also develop. (From Adams et al., Principles of Neurology, 6th ed, p1269)Phosphorus Isotopes: Stable phosphorus atoms that have the same atomic number as the element phosphorus, but differ in atomic weight. P-31 is a stable phosphorus isotope.Myocardial Infarction: NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).Electroencephalography: Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.Visual Perception: The selecting and organizing of visual stimuli based on the individual's past experience.Stroke: A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)Spinal Cord Compression: Acute and chronic conditions characterized by external mechanical compression of the SPINAL CORD due to extramedullary neoplasm; EPIDURAL ABSCESS; SPINAL FRACTURES; bony deformities of the vertebral bodies; and other conditions. Clinical manifestations vary with the anatomic site of the lesion and may include localized pain, weakness, sensory loss, incontinence, and impotence.Rest: Freedom from activity.Angiography, Digital Subtraction: A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.Magnetic Fields: Areas of attractive or repulsive force surrounding MAGNETS.Ventricular Function, Right: The hemodynamic and electrophysiological action of the right HEART VENTRICLE.Signal Processing, Computer-Assisted: Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.Leukoencephalopathies: Any of various diseases affecting the white matter of the central nervous system.Ventricular Dysfunction, Left: A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.Facial Expression: Observable changes of expression in the face in response to emotional stimuli.Schizophrenia: A severe emotional disorder of psychotic depth characteristically marked by a retreat from reality with delusion formation, HALLUCINATIONS, emotional disharmony, and regressive behavior.Parahippocampal Gyrus: A convolution on the inferior surface of each cerebral hemisphere, lying between the hippocampal and collateral sulci.Craniotomy: Any operation on the cranium or incision into the cranium. (Dorland, 28th ed)Models, Anatomic: Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.Statistics, Nonparametric: A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)Blood Flow Velocity: A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.Menisci, Tibial: The interarticular fibrocartilages of the superior surface of the tibia.Manganese Compounds: Inorganic chemicals that contain manganese as an integral part of the molecule.Cerebral Angiography: Radiography of the vascular system of the brain after injection of a contrast medium.Memory: Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.Pilot Projects: Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.Chemistry: A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.Spectrum Analysis: The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Recovery of Function: A partial or complete return to the normal or proper physiologic activity of an organ or part following disease or trauma.

*  Middle Tennessee Imaging
Middle Tennessee Imaging. Click here to make an online payment ... Fluoroscopy. Magnetic Resonance Imaging MRI. MRI is one of ... of diagnostic imaging used today. It allows the radiologist ... middle tennessee imaging click here to make an online payment home staff radiologists patient information leading edge technology and compassionate care together in middle tn leading edge technology and compassionate care together in middle tn video testimonials mti earns acr accreditation for mri read more pdf bone density mti center only bone density is an enhanced x ray technology that is used to measure bone loss bone density mti center only computerized tomography ct scan ct is computed tomography some people also refer to it as cat computed axial tomography scan computerized tomography ct scan fluoroscopy fluoroscopy is a type of x ray that is done in a special room in the x ray department that allows a radiologist to see the organs and tissues in your body in motion ...
http://mtimedicalimaging.com/
*  Total Care Outpatient Imaging Center St. Francis Hospital Memphis
Care Outpatient Imaging Center St. Francis Hospital Memphis ... Contact Us - Total Imaging Ctr. Contact Us - Park Avenue. Other ... for Your Visit. Magnetic Resonance Imaging. CT Scan. Nuclear...
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*  Welcome to Vision Lab - University of Antwerp | Vision Lab - University of Antwerp
of novel image reconstruction, processing and ... of Tomography, Magnetic Resonance Imaging, Shape modelling, and ... Tomography is an imaging technique in which a 3D image of an...
http://visielab.uantwerpen.be/
*  MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD - Patent applicationMAGNE
1 A magnetic resonance imaging apparatus comprising:a first ... blood flow image acquisition unit configured to acquire ... a first blood flow image of a breast of an object without...
http://patentsencyclopedia.com/app/20100198053
*  Haacke - Reichenbach Susceptibility Weighted Imaging in MRI ( Magnetic resonance imaging ) : Basic
Weighted Imaging in MRI Magnetic resonance imaging : ... Weighted Imaging in MRI Magnetic resonance imaging : ... Weighted Imaging discusses the promising new MRI...
http://libreriauniverso.it/articolo/38175/0470043431/Haacke-Reichenbach-Susceptibility-Weighted-Imaging-in-MRI-(-Magnetic-resonance-imaging-)-:-Basic-Concepts-and-Clinical-Applications
*  Medical Xpress - magnetic resonance image
Medical Xpress - magnetic resonance image. Home magnetic resonance image. News tagged with magnetic resonance image. 1 week. 1 week. 1 week. ... Experts in magnetic resonance imaging MRI and kidney...
http://medicalxpress.com/tags/magnetic resonance image/
*  .. Magnetic Resonance Imaging
Magnetic Resonance Imaging Frequently Asked Questions About Magnetic Resonance Imaging MRI in Patients with ... of the strong magnetic fields on routine metal implants has...
http://centerforspinaldisorders.com/magnetic-resonance-imaging/
*  BMC Urology | Abstract | Protocol for a prospective magnetic resonance imaging study on supraspinal
for a prospective magnetic resonance imaging study on supraspinal...
http://biomedcentral.com/1471-2490/14/68/abstract
*  Magnetic Resonance Imaging (MRI)
Magnetic Resonance Imaging MRI. Follow us: Follow Us on Twitter ... & Services. Imaging Center. For Patients. Magnetic Resonance Imaging MRI. Magnetic Resonance Imaging...
http://cedars-sinai.edu/Patients/Programs-and-Services/Imaging-Center/For-Patients/Exams-by-Procedure/MRI/index.aspx
*  Medical Xpress - functional magnetic resonance imaging(... continued page 4)
Medical Xpress - functional magnetic resonance imaging . ... 4. Home functional magnetic resonance imaging. News tagged with ... functional magnetic resonance imaging. sort by:. Date. 6 hours. ... 1. Health. Brain imaging study reveals the wandering mind behind ... Combination of two imaging techniques allows new insights into...
http://medicalxpress.com/tags/functional magnetic resonance imaging/page4.html
*  Fluid-attenuated inversion recovery
fluid attenuated inversion recovery fluid attenuated inversion recovery thumb axial fluid attenuated inversion recovery mri image demonstrating tumor related infiltration involving lenticular nuclei arrow thumb axial fluid attenuated inversion recovery mri image demonstrating tumor related infiltration involving both temporal lobes short arrow and the substantia nigra long arrow fluid attenuated inversion recovery flair is a pulse sequence used in magnetic resonance imaging which was invented by dr graeme bydder flair can be used with both three dimensional imaging d flair or two dimensional imaging d flair the pulse sequence is an inversion recovery technique that nulls fluids for example it can be used in brain imaging to suppress cerebrospinal fluid csf effects on the image so as to bring out the periventricular hyperintense lesions such as multiple sclerosis ms plaques bakshi r ariyaratana s benedict rh jacobs l fluid attenuated inversion recovery magnetic resonance imaging detects cortical and juxtacorti...
https://en.wikipedia.org/wiki/Fluid-attenuated_inversion_recovery
*  Spinal Cord Disorders Board Index: how to read mri results
... health boards health message boards. Message Boards. Find a Board. Register FAQ Posting Policy Today's Posts Mark Boards Read Advanced Search Find A Board Site Map. Message Board. HealthBoards. Spinal Cord Disorders. H > how to read mri results. Spinal Cord Disorders Board Index Board Index > Spinal Cord Disorders. Pages: 1 2 3 4 5 6 7 8 Showing 1 - 20 of 158 for how to read mri results. 5 replies Number 4 on the 22nd. 5 replies Please Help with my Spinal MRI Results Dec 26, 2012. 16 replies. for your reply to my message about how to find a reference for a Neurological Surgeon. 5 replies Cervical MRI results are scary to me Jul 27, 2013. 5 replies Mri results May 19, 2013. 14 replies MRI results regarding neck... Feb 24, 2013. 8 replies Please Help with my Spinal MRI Results Dec 11, 2012. Hi, I am new to here and would really like some help with figuring out my MRI 's of my Cervical Spine. 16 replies Help with understanding MRI results, please... 6 replies Mri results - what are my options. 10 replies He...
http://index.healthboards.com/spine/how-to-read-mri-results/1/
*  inversion recovery sequences: Topics by Science.gov
Although fluid-attenuated inversion recovery FLAIR sequences are commonly considered as T2-weighted imaging with dark cerebrospinal fluid, they also show mild T1-weighted contrast, which is responsible for the contrast enhancement. Optimization of Magnetization-Prepared 3-Dimensional Fluid Attenuated Inversion Recovery Imaging for Lesion Detection at 7 T PubMed Central Saranathan, Manojkumar; Tourdias, Thomas; Kerr, Adam B.; Bernstein, Jeff D.; Kerchner, Geoffrey A.; Han, May H.; Rutt, Brian K. 2016-01-01 Purpose The aim of this study was to optimize the 3-dimensional 3D fluid attenuated inversion recovery FLAIR pulse sequence for isotropic high-spatial-resolution imaging of white matter WM and cortical lesions at 7 T. PMID:27029337 Accuracy for detection of simulated lesions: comparison of fluid-attenuated inversion-recovery, proton density--weighted, and T2-weighted synthetic brain MR imaging NASA Technical Reports Server NTRS Herskovits, E. PMID:22072071 Effect of iron oxide nanoparticles coating type on t...
http://science.gov/topicpages/i/inversion recovery sequences.html
*  Magnetic resonance microscopy
... 'Magnetic resonance microscopy' MRM, µMRI is magnetic resonance imaging MRI at a microscopic level down to the scale of 5-10 µm³. R Sharma, Microimaging of hairless rat skin by magnetic resonance at 900 MHz. Magnetic Resonance Imaging. 27 2 :240-255, 2009 The first definition of MRM was MRI having voxel resolutions of better than 100 µm³. Nomenclature Differences between MRI and MRM Current status of MRM Alternative MRM References External links. Magnetic resonance microscopy refers to very high resolution MRI imaging down to nanometer scale, in some cases comparable with histopathology. The term MR microscopy is most widely used by the High Resolution Magnetic Resonance Imaging department at Duke University, headed by Dr. G Allan Johnson, and the National High Magnetic Field Lab group at AMRIS, University of Florida/Florida State University. Differences between MRI and MRM. Resolution : Medical MRI resolution is typically about 1 mm³; the desired resolution of MRM is 100 µm³ or smaller to 10 µm³, compar...
https://en.wikipedia.org/wiki/Magnetic_resonance_microscopy
*  Fast low angle shot magnetic resonance imaging
... 'Fast low angle shot magnetic resonance imaging' 'FLASH MRI' is a basic measuring principle for rapid MRI invented in 1985 by Jens Frahm, Axel Haase, W Hänicke, KD Merboldt, and D Matthaei German Patent Application P 35 04 734.8, February 12, 1985 at the in Göttingen, Germany. The generic FLASH technique emerges as a gradient echo sequence which combines a low-flip angle radio-frequency excitation of the NMR signal recorded as a spatially encoded gradient echo with a rapid repetition of the basic sequence. Only the combination of i a low-flip angle excitation which leaves unused longitudinal magnetization for an immediate next excitation with ii the acquisition of a gradient echo which does not need a further radio-frequency pulse that would affect the residual longitudinal magnetization, allows for the rapid repetition of the basic sequence interval and the resulting speed of the entire image acquisition. FLASH reduced the typical sequence interval to what is minimally required for imaging: a slice-sele...
https://en.wikipedia.org/wiki/Fast_low_angle_shot_magnetic_resonance_imaging
*  MRI - Fast Spin Echo - MR-TIP: Database
... News. Resources. Resources. 'Fast Spin Echo'. search it again Fast Spin Echo. Result : Searchterm ' Fast Spin Echo ' found in 5 terms and 28 definitions. Fast Spin Echo. FSE In the pulse sequence timing diagram, a fast spin echo sequence with an echo train length of 3 is illustrated. Fast spin echo FSE sequences have replaced conventional T2 weighted spin echo sequences for most clinical applications. Fast spin echo allows reduced acquisition times and enables T2 weighted breath hold imaging, e.g. In case of the acquisition of 2 echoes this type of a sequence is named double fast spin echo / dual echo sequence, the first echo is usually density and the second echo is T2 weighted image. Fast spin echo images are more T2 weighted, which makes it difficult to obtain true proton density weighted images. Other terms for this technique are: Turbo Spin Echo Rapid Imaging Spin Echo, Rapid Spin Echo, Rapid Acquisition Spin Echo, Rapid Acquisition with Refocused Echoes. Images, Movies, Sliders :. Courtesy of Rober...
http://mr-tip.com/serv1.php?type=db1&dbs=Fast Spin Echo
*  Aliasing in MRI | Radiology Reference Article | Radiopaedia.org
Aliasing in MRI. NEW TO RADIOPAEDIA. Aliasing in MRI. MRI artifacts aliasing in ultrasound Related articles MRI physics. parameters spin echo sequences T1 weighted image T2 weighted image. inversion recovery sequences short tau inversion recovery STIR fluid attenuation inversion recovery FLAIR turbo inversion recovery magnitude TIRM double inversion recovery DIR. fat suppressed imaging sequences pulse sequence parameters diffusion weighted sequences DWI ​ apparent diffusion coefficient ADC b-values diffusion tensor imaging. perfusion weighted imaging ​ techniques ​ dynamic susceptibility contrast imaging DSC dynamic contrast enhanced imaging DCE arterial spin labelled imaging ASL. CSF flow studies susceptibility weighted imaging SWI saturation recovery sequences echo-planar pulse sequences metal artifact reduction sequence T1 rho spiral pulse sequences MR angiography and venography contrast-enhanced MRA non-contrast-enhanced MRA time of flight angiography phase contrast imaging TRICKS. lactate peak : resonate...
http://radiopaedia.org/articles/aliasing-in-mri
*  Magnetic Resonance Imagers (MRIs) - Health - The New York Times
Magnetic Resonance Imagers MRIs - Health - The New York Times. Magnetic Resonance Imagers. /svc/timestopic/v1/topic.json?limit=10&type=article%2Cblogpost&fq=%28subject%3A%22MAGNETIC+RESONANCE+IMAGERS%22%29+AND++-type of material%3A%22Caption%22+AND++-type of material%3A%22Correction%22+AND++-type of material%3A%22List%22+AND++-type of material%3A%22Paid+Death+Notice%22+AND++-news desk%3A%22Society%22&. {"type":"article","show header text":true,"header":"ARTICLES ABOUT MAGNETIC RESONANCE IMAGERS","query":" des=\"MAGNETIC RESONANCE IMAGERS\" and tom!=\"Caption\" and tom!=\"Correction\" and tom!=\"List\" and tom!=\"Paid Death Notice\" and dsk!=\"Society\"","search query":" subject:\"MAGNETIC RESONANCE IMAGERS\" AND -type of material:\"Caption\" AND -type of material:\"Correction\" AND -type of material:\"List\" AND -type of material:\"Paid Death Notice\" AND -news desk:\"Society\"","num search articles":"10","show summary":true,"show byline":true,"show pub date":true,"hide thumbnails":false,"show kicker":false,"...
http://topics.nytimes.com/top/news/health/diseasesconditionsandhealthtopics/magnetic_resonance_imagers/index.html?query=Archives of Neurology&field=org&match=exact
*  Magnetic Resonance Imagers (MRIs) - Health - The New York Times
Magnetic Resonance Imagers MRIs - Health - The New York Times. Magnetic Resonance Imagers. /svc/timestopic/v1/topic.json?limit=10&type=article%2Cblogpost&fq=%28subject%3A%22MAGNETIC+RESONANCE+IMAGERS%22%29+AND++-type of material%3A%22Caption%22+AND++-type of material%3A%22Correction%22+AND++-type of material%3A%22List%22+AND++-type of material%3A%22Paid+Death+Notice%22+AND++-news desk%3A%22Society%22&. {"type":"article","show header text":true,"header":"ARTICLES ABOUT MAGNETIC RESONANCE IMAGERS","query":" des=\"MAGNETIC RESONANCE IMAGERS\" and tom!=\"Caption\" and tom!=\"Correction\" and tom!=\"List\" and tom!=\"Paid Death Notice\" and dsk!=\"Society\"","search query":" subject:\"MAGNETIC RESONANCE IMAGERS\" AND -type of material:\"Caption\" AND -type of material:\"Correction\" AND -type of material:\"List\" AND -type of material:\"Paid Death Notice\" AND -news desk:\"Society\"","num search articles":"10","show summary":true,"show byline":true,"show pub date":true,"hide thumbnails":false,"show kicker":false,"...
http://topics.nytimes.com/top/news/health/diseasesconditionsandhealthtopics/magnetic_resonance_imagers/index.html?query=BOXING&field=des&match=exact
*  Magnetic Resonance Imagers (MRIs) - Health - The New York Times
Magnetic Resonance Imagers MRIs - Health - The New York Times. Magnetic Resonance Imagers. /svc/timestopic/v1/topic.json?limit=10&type=article%2Cblogpost&fq=%28subject%3A%22MAGNETIC+RESONANCE+IMAGERS%22%29+AND++-type of material%3A%22Caption%22+AND++-type of material%3A%22Correction%22+AND++-type of material%3A%22List%22+AND++-type of material%3A%22Paid+Death+Notice%22+AND++-news desk%3A%22Society%22&. {"type":"article","show header text":true,"header":"ARTICLES ABOUT MAGNETIC RESONANCE IMAGERS","query":" des=\"MAGNETIC RESONANCE IMAGERS\" and tom!=\"Caption\" and tom!=\"Correction\" and tom!=\"List\" and tom!=\"Paid Death Notice\" and dsk!=\"Society\"","search query":" subject:\"MAGNETIC RESONANCE IMAGERS\" AND -type of material:\"Caption\" AND -type of material:\"Correction\" AND -type of material:\"List\" AND -type of material:\"Paid Death Notice\" AND -news desk:\"Society\"","num search articles":"10","show summary":true,"show byline":true,"show pub date":true,"hide thumbnails":false,"show kicker":false,"...
http://topics.nytimes.com/top/news/health/diseasesconditionsandhealthtopics/magnetic_resonance_imagers/index.html?query=Carotid Arteries&field=des&match=exact
*  Magnetic Resonance Imagers (MRIs) - Health - The New York Times
Magnetic Resonance Imagers MRIs - Health - The New York Times. Magnetic Resonance Imagers. /svc/timestopic/v1/topic.json?limit=10&type=article%2Cblogpost&fq=%28subject%3A%22MAGNETIC+RESONANCE+IMAGERS%22%29+AND++-type of material%3A%22Caption%22+AND++-type of material%3A%22Correction%22+AND++-type of material%3A%22List%22+AND++-type of material%3A%22Paid+Death+Notice%22+AND++-news desk%3A%22Society%22&. {"type":"article","show header text":true,"header":"ARTICLES ABOUT MAGNETIC RESONANCE IMAGERS","query":" des=\"MAGNETIC RESONANCE IMAGERS\" and tom!=\"Caption\" and tom!=\"Correction\" and tom!=\"List\" and tom!=\"Paid Death Notice\" and dsk!=\"Society\"","search query":" subject:\"MAGNETIC RESONANCE IMAGERS\" AND -type of material:\"Caption\" AND -type of material:\"Correction\" AND -type of material:\"List\" AND -type of material:\"Paid Death Notice\" AND -news desk:\"Society\"","num search articles":"10","show summary":true,"show byline":true,"show pub date":true,"hide thumbnails":false,"show kicker":false,"...
http://topics.nytimes.com/top/news/health/diseasesconditionsandhealthtopics/magnetic_resonance_imagers/index.html?query=Computerized Axial Tomography (CAT Scans)&field=des&match=exact
*  New paradigm for nanoscale resolution MRI experimentally achieved -- ScienceDaily
... New paradigm for nanoscale resolution MRI experimentally achieved. Date: September 27, 2013 Source: University of Illinois College of Engineering Summary: A team of researchers has devised a novel nuclear magnetic resonance imaging technique that delivers a roughly 10-nanometer spatial resolution. A team from the University of Illinois at Urbana-Champaign and Northwestern University has devised a novel nuclear magnetic resonance imaging MRI technique that delivers a roughly 10 nanometer spatial resolution. University of Illinois College of Engineering. "New paradigm for nanoscale resolution MRI experimentally achieved." ScienceDaily. University of Illinois College of Engineering. New paradigm for nanoscale resolution MRI experimentally achieved. Retrieved October 4, 2015 from www.sciencedaily.com/releases/2013/09/130927123504.htm University of Illinois College of Engineering. "New paradigm for nanoscale resolution MRI experimentally achieved." ScienceDaily. RELATED TOPICS. Health Medicine. Medical Imagin...
http://sciencedaily.com/releases/2013/09/130927123504.htm
*  Magnetic resonance imaging
... {{Infobox diagnostic name = Magnetic resonance imaging image = frameless. MedlinePlus = 003335 MeshID = D008279 }} 'Magnetic resonance imaging' 'MRI', 'nuclear magnetic resonance imaging' 'NMRI', or 'magnetic resonance tomography' 'MRT' is a medical imaging technique used in radiology to image the anatomy and the physiological processes of the body in both health and disease. MRI scanners use magnetic field s and radio wave s to form images of the body. Procedure Contrast. Magnetic resonance angiography. Magnetic resonance spectroscopy. Real-time MRI. Fluid attenuated inversion recovery FLAIR. Cardiac magnetic resonance imaging. Extracellular contrast agents are widely used in liver MRI and newer hepatobiliary contrast agents also provide the opportunity to perform functional biliary imaging. Functional magnetic resonance imaging. In most medical applications, protons hydrogen atom s in tissues containing water molecules are used to create a signal that is processed to form an image of the body. To creat...
https://en.wikipedia.org/wiki/Magnetic_resonance_imaging
*  DEMYELINA TING DISEASES OF THE BRAIN. As a result, normal myelin is hypointense to gray matter on T 2 -weighted images and hyperintense on T 1 -weighted images. As mentioned previously, the observed changes are secondary to chronic ischemia of the deep wh
http://spinwarp.ucsd.edu/NeuroWeb/Text/br-840.htm
*  Brivo MR355 1.5 Tesla MRI Scanner - GE Healthcare India - GE Healthcare India
... Home Products ... Categories ... GoldSeal - Refurbished Systems. Healthcare IT. Interventional Image Guided Systems. Magnetic Resonance Imaging. Core Imaging. Molecular Imaging. PET/CT. Radiography. Surgical Imaging. Specialties ... News and Initiatives ... Services ... Services. People Optimisation. Data Optimisation. Support. Education ... Education Helpdesk. India. Login/Register. GE Healthcare Menu. did not find any results Search Suggestions: Make sure your keyword s are spelled correctly Try another keyword s Try more general keyword s. Products. Categories. GoldSeal - Refurbished Systems. Healthcare IT. Interventional Image Guided Systems. Magnetic Resonance Imaging. Core Imaging. Molecular Imaging. PET/CT. Radiography. Surgical Imaging. Brivo MR355 1.5T Advanced 1.5T magnetic resonance technology is now made more accessible with the user-friendly and energy-efficient Brivo* MR355. Brivo MR355 1.5T The Brivo MR355 reflects our efforts to make advanced diagnostic technology more accessible. Built a...
http://www3.gehealthcare.in/en/Products/Categories/Magnetic_Resonance_Imaging/Brivo_MR355
*  Event-related functional magnetic resonance imaging
... 'Event-related functional magnetic resonance imaging efMRI ' is a technique in magnetic resonance imaging that can be used to detect changes in the BOLD Blood Oxygen Level Dependent hemodynamic response to neural activity in response to certain events. By contrast, event related designs are not presented in a set sequence; the presentation is randomized and the time in between stimuli can vary. efMRI attempts to model the change in fMRI signal in response to neural events associated with behavioral trials. If the experiment is properly set up and the different events are timed correctly, efMRI allows a person to observe the differences in neural activity associated with each event. History Hemodynamic Response Rapid Event-Related fMRI Advantages of efMRI Disadvantages of efMRI Statistical Analysis Applications References. According to D’Esposito, they include that fMRI “does not require an injection of radioisotope into participants and is otherwise noninvasive, has better spatial resolution, and has bet...
https://en.wikipedia.org/wiki/Event-related_functional_magnetic_resonance_imaging
*  What are Hyperintense Lesions? (with pictures)
What are Hyperintense Lesions. wise GEEK clear answers for common questions. What are Hyperintense Lesions. Hyperintense lesions are bright, white spots that show up on certain types of MRI scans. Hyperintense lesions in certain parts of the brain can be a sign of dementia. Multiple sclerosis is one of the most common causes of hyperintense lesions. The radiologist or technician can view hyperintense lesions on T2 MRI images in real time from the observation room. wiseGEEK Slideshows 10 hilariously insightful foreign words These 10 facts about space will blow your mind These 10 animal facts will amaze you Top 10 amazing movie makeup transformations Top 10 facts about the world Top 10 unbelievable historical concurrencies Adorable animal families that will make you "aww" You won't believe these 10 facts about people Can you see through these real-life optical illusions. Hyperintense lesions are patches of damaged cell tissue that show up as bright, white spots in certain types of specialized magnetic resonance...
http://wisegeek.org/what-are-hyperintense-lesions.htm
*  Spinal Cord Disorders Board Index: reading mri results
... It appears you have not yet Signed Up with our community. To Sign Up for free, please click here.... health boards health message boards. -->. Home. Health Centers. Anxiety More Coming Soon. Message Boards. Posting Policy. New Posts. Advanced Search. FAQ. Find a Board. Drug Talk. Blogs. Sign Up. login. User Name. Password. Remember Me. Register Forget Password. Blogs. Recent Entries. Best Entries. Best Blogs. Blog List. Search Blogs. Register FAQ Posting Policy Today's Posts Mark Boards Read Advanced Search Find A Board Site Map. Message Board. HealthBoards. Board Index. Spinal Cord Disorders. R > reading mri results. Spinal Cord Disorders Board Index Board Index > Spinal Cord Disorders. 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z. Pages: 1 2 3 4 5 6 7 8 9 10 11 ... 13 Showing 1 - 20 of 256 for reading mri results. 0.032 seconds. MRI help please!. Sep 20, 2015. ... shoulder. My arm goes dead following a shooting pain when I reach to the back of low cupboards, empty the washing machine etc. I ...
http://index.healthboards.com/spine/reading-mri-results/1/
*  Case 209 --Neuropathology Case
... Brain Pathology Case of the Month - August 2010 Contributed by Eun Kyung Park 1, Yun-Ho Lee 1, Dong-Seok Kim 1, Joong-Un Choi 3, Tae-Seung Kim 2, Kyu-Won Shim 1 1 Department of Neurosurgery, Severance Hospital, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea. 2 Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea. 3 Department of Neurosurgery, CHA University, College of Medicine, Seongnam, Korea. CLINICAL HISTORY AND IMAGING STUDIES A 17-year-old girl presented with a seizure which started as involuntary movement of left arm and progressed to loss of consciousness. She experienced severe headaches for three weeks prior to hospital admission. There was no previous medical history. On neurologic examination, bilateral papilledema was noted and no other neurologic deficits were detected. MRI revealed a 7x4cm heterogeneous extra-axial mass in right frontoparietal area with no vasogenic edema. The mass contained a sept...
http://path.upmc.edu/divisions/neuropath/bpath/cases/case209.html
*  Imaging Findings in Sarcoid of the Humerus | Chaudhry | Radiology Case ReportsUntitled Document
Radiology Case Reports. Imaging findings in sarcoid of the humerus. Radiology Case Reports. We report a case of sarcoid involvement of the humerus secondary to pulmonary sarcoidosis. While the radiology literature contains reports describing osseous sarcoid affecting the hands and feet 1 , tibia 2 , spine 3, 4 , bones of the skull 1 , pelvis 5 , ribs 4 , sternum 4 and other bones 1 , we are unaware of a prior case report describing humeral involvement. A 99mTc radionuclide bone scan Figure 1 demonstrated mild uptake in the right humeral head. A magnetic resonance imaging MRI examination was performed following the negative radiograph, and demonstrated an area of abnormal marrow signal intensity in the region of the medial humeral head extending to the surgical neck. This focus was of low signal intensity on T1-weighted images Figure 3. T1-weighted coronal image demonstrates focus of low signal intensity involving the medial humeral head and its surgical neck. T2-weighted coronal image of the right shoulder de...
http://radiology.casereports.net/index.php/rcr/article/view/36/219
*  Neck pain: an unusual presentation of a common disease
... Article Neck pain: an unusual presentation of a common disease. An unusual presentation of a common disease. MRI was performed using a Philips Gyroscan 1.5 T machine using sagittal T1weighted turbo spin echo TSE; repetition time TR 400/echo time TE 10, matrix 512, field of view FOV 2556255, slice thickness 3.0 mm/ 0.3 mm, number of signal averages NSA 4, T2 weighted TSE TR 3500/TE 120, matrix 512, FOV 2556255, slice thickness 3.0 mm/0.3 mm, NSA 4 and axial T2weighted turbo field echo TFE, TR 7.8/TE 3.9, flip angle 45˚, matrix 512, FOV 2256225, slice thickness 3.5 mm/21.8 mm, NSA 3 sequences. Post-contrast sagittal as above and axial T1weighted TFE TR 9.4/ TE 4.6, flip angle 25˚, matrix 512, FOV 24562.4, slice thickness 4.0 mm/22.0 mm, NSA 4 sequences were also performed from C3 to D1 level. MRI demonstrated a destructive lesion involving the right facet joint of C4/5 associated with a medially placed extradural mass of intermediate signal on T1weighted images, intermediate heterogeneous signal on T2 weig...
http://researchgate.net/publication/7066515_Neck_pain_an_unusual_presentation_of_a_common_disease
*  MRI evaluation of neoadjuvant low-dose fractionated radiotherapy with concurrent chemotherapy in pat
... ients with locally advanced breast cancer. MRI evaluation of neoadjuvant low-dose fractionated radiotherapy with concurrent chemotherapy in patients with locally advanced breast cancer. MedLine Citation:. OBJECTIVES: We address the diagnostic performance of breast MRI and the efficacy of neoadjuvant radiochemotherapy NRC treatment NRC protocol vs conventional neoadjuvant chemotherapy NAC in patients with locally advanced breast cancer. METHODS: The NRC protocol consists of six anthracycline/taxane cycles and concomitant low-dose radiotherapy on breast tumour volume. Breast MRI was performed at baseline and after the last therapy cycle in 18 and 36 patients undergoing the NRC protocol or conventional NAC propensity matching. 17 out of 18 patients in the NRC group met the criteria for avoiding mastectomy based on final MRI evaluation. The association of the three above criteria yielded a better diagnostic performance, both in the general population AUC=0.79 and in the NRC and the NAC group separately AUC=0....
http://biomedsearch.com/nih/MRI-evaluation-neoadjuvant-low-dose/22763034.html
*  Functional connectivity magnetic resonance imaging classification of autism | Brain
Functional connectivity magnetic resonance imaging classification of autism. Brain. Brain. Brain. Functional connectivity magnetic resonance imaging classification of autism. Jeffrey S. Anderson, Jared A. Nielsen, Alyson L. DuBray, T. Jason Druzgal, Annahir N. Cariello, Jason R. Cooperrider, Brandon A. Zielinski, Caitlin Ravichandran, P. Thomas Fletcher, Andrew L. Alexander, Erin D. Bigler, Nicholas Lange, Janet E. Lainhart. DOI: http://dx.doi.org/10.1093/brain/awr263 3739-3751 First published online: 17 October 2011. Article. PDF. You do not have access to the full text of this article, the first page of the PDF of this article appears below. Log in using your username and password Username *. Password *. Forgotten your username or password. Log in through your institution You may be able to gain access using your login credentials for your institution. Contact your library if you do not have a username and password. Subscribe to the Journal : Subscribe to the print and/or online journal. Register : Register...
http://brain.oxfordjournals.org/content/134/12/3739.long
*  My MRI results, Dr. Young could you translate?
My MRI results, Dr. Forum. New Posts. Mark Forums Read. Articles. Forum. SCI Community Forums. My MRI results, Dr. 05-08-2003, 12:47 PM. View Profile. View Forum Posts. Private Message. View Blog Entries. Visit Homepage. View Articles. Join Date Jul 2001 Location Houston, Tx. My MRI results, Dr. History: Spinal Cord Injury. Technique: Non-contrast MRI of the cervical spine. There is abnormal signal intensity within the cord from the upper C4 to the upper C6 vertebral body level with T2-hyperintensity and xT1-hypointensity. There is bilateral facet hypertrophy and mild bilateral uncovertebral joint hypertrophy. There is asymmetric mild narrowing of the left neural foramen. There is mild bilateral uncovertebral joint hypertrophy. The neural foramina demonstrates heterogeneous signal intensity in part from the metallic artifact and prominent vascular structures. C7-T1: There is heterogeneous signal intensity in portions of the neural foramen from metallic artifact. Abnormal signal intensity and enlargement withi...
http://sci.rutgers.edu/forum/showthread.php?6026-My-MRI-results-Dr-Young-could-you-translate
*  Dynamic magnetic resonance imaging for tumor prognosis. - OpenThesis
Dynamic magnetic resonance imaging for tumor prognosis. Dynamic magnetic resonance imaging for tumor prognosis. DYNAMIC MAGNETIC RESONANCE FOR CANCER PROGNOSIS Publication No. Lan Jiang The University of Texas Southwestern Medical Center at Dallas, 2006 Supervising Professor: Ralph P. There is increasing demand for tumor prognostic information in the clinical setting. VI With development of MRI the non-invasive technique, BOLD Blood Oxygenation Level Dependent contrast MRI, has been widely used for neuroscience research to detect brain activations. Because deoxyhemoglobin dHbO2 is paramagnetic and oxyhemoglobin HbO2 is non-magnetic, the change of concentration of deoxyhemoglobin and oxyhemoglobin can cause a Bulk Magnetic Susceptibility BMS change and the T2* signal response during MR imaging. Since inhalation of oxygen could cause variation in the blood flow and oxygenation, and BOLD MRI is sensitive to both these factors, it becomes very important to explore the correlation between the BOLD res...
http://openthesis.org/documents/Dynamic-magnetic-resonance-imaging-tumor-62621.html
*  New MRI analysis useful in predicting stroke complications caused by clot-busters -- ScienceDaily
... New MRI analysis useful in predicting stroke complications caused by clot-busters. Date: December 20, 2012 Source: Johns Hopkins Medicine Summary: Researchers have developed a new way of looking at standard MRI scans that more accurately measures damage to the blood-brain barrier in stroke victims, a process they hope will lead to safer, more individualized treatment of blood clots in the brain and better outcomes. Johns Hopkins researchers have developed a new way of looking at standard MRI scans that more accurately measures damage to the blood-brain barrier in stroke victims, a process they hope will lead to safer, more individualized treatment of blood clots in the brain and better outcomes. Johns Hopkins Medicine. "New MRI analysis useful in predicting stroke complications caused by clot-busters." ScienceDaily. Johns Hopkins Medicine. New MRI analysis useful in predicting stroke complications caused by clot-busters. "New MRI analysis useful in predicting stroke complications caused by clot-busters."...
http://sciencedaily.com/releases/2012/12/121220171604.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed: sciencedaily/health_medicine/psychology (Psychology Research News -- ScienceDaily)
*  Leicester Research Archive: Statistics
leicester research archive statistics skip navigation lra home browse communities collections browse items by first published author title help sign on to my lra receive email updates edit profile library leicester research archive statistics total visits views fast spin echo and fast fluid attenuated inversion recovery versus conventional spin echo sequences for mr quantification of multiple sclerosis lesions total visits per month april may june july august september october fast spin echo and fast fluid attenuated inversion recovery versus conventional spin echo sequences for mr quantification of multiple sclerosis lesions file downloads views pdf top country views views united states canada china russia france germany united kingdom colombia netherlands sweden top city views views miami beach toronto redmond zhengzhou kansas city beijing bellevue lethbridge state college yorktown heights university home university a z contact the university...
https://lra.le.ac.uk/handle/2381/492/statistics
*  Magnetic Resonance Imaging (MRI) : National Multiple Sclerosis Society
Magnetic Resonance Imaging MRI : National Multiple Sclerosis Society. Magnetic Resonance Imaging MRI - National Multiple Sclerosis Society. National Multiple Sclerosis Society. Symptoms & Diagnosis. MS Symptoms. Diagnosing MS. Clinically Isolated Syndrome CIS. Diagnosing Tools. Resources & Support. Home Symptoms Diagnosis Diagnosing Tools Magnetic Resonance Imaging MRI. Magnetic Resonance Imaging MRI. Magnetic resonance imaging MRI is the diagnostic tool that currently offers the most sensitive non-invasive way of imaging the brain, spinal cord, or other areas of the body. The various types of MRI scans that are used most commonly the T1-weighted scan and the T2-weighted scan measure this relaxation time in different ways. Diagnosis of MS. However, approximately 5 percent of people with clinically-definite MS do not initially show lesions on MRI at the time of diagnosis. Since many lesions seen on MRI may be in so-called silent areas of the brain that don t produce symptoms, it is not always possible to make ...
http://nationalmssociety.org/Symptoms-Diagnosis/Diagnosing-Tools/MRI
*  Positron emission tomography–magnetic resonance imaging
... thumb|Computer screenshot showing a PET image upper left, MRI image upper right and the combined PET-MRI image where PET data is overlaid over the MRI data lower right 'Positron emission tomography–magnetic resonance imaging' 'PET-MRI' is a hybrid imaging technology that incorporates magnetic resonance imaging MRI soft tissue morphological imaging and positron emission tomography PET functional imaging. 1 Applications Manufacturers Clinical systems. Preclinical systems. PET-MRI versus PET-CT See also References. http://www.dkfz.de/en/medphys/heavy ion therapy/index.html with http://www.dkfz.de/en/presse/pressemitteilungen/2013/dkfz-pm-13-23-A-Sharper-Image-with-Combined-PET-MR-Technology.php. Currently three companies offer combined PET-MR systems: Philips, Siemens and GE. Preclinical systems. Currently, the combination of positron emission tomography PET and magnetic resonance imaging MRI as a hybrid imaging modality is receiving great attention not only in its emerging clinical applications but also in...
https://en.wikipedia.org/wiki/Positron_emission_tomography–magnetic_resonance_imaging
*  Determination of edema in porcine coronary arteries by T2 weighted cardiovascular magnetic resonance
In this study, we aimed to determine whether edema induced in porcine coronary arteries by balloon injury could be reliably detected by cardiovascular magnetic resonance CMR using a water sensitive T2-weighted short tau inversion recovery sequence T2-STIR. RESULTS: Post injury, the T2-STIR images of the injured LAD vessel wall showed a significant 72%, relative signal intensity SI increase compared with baseline p = 0.028. Twelve out of the 14 86% T2-STIR images displaying coronary artery wall enhancement also showed Evans blue uptake in the corresponding histology. histology CMR images of the balloon-injured LAD were matched with the corresponding histological sections by using landmarks, such as the distance from the origin of the circumflex artery, and gross anatomical features, such as the shape and size of the coronary lumen and vessel wall. The relative SI on T2-STIR images was correlated to the area of fibrinogen detected in the corresponding histology. Positive fibrinogen staining was observed in the ...
http://biomedsearch.com/nih/Determination-Edema-in-Porcine-Coronary/21936914.html
*  MRI Evaluation of Chest Pain
... Topics. World Biotech and Healthcare News. Publish Your News On BioPortfolio. Search News On BioPortfolio. Topics. All Topics Biotechnology Biotech Business Biotech Products Cancer Cardiovascular Dermatology Drug Discovery Endocrinology Gastroenterology Immunology Infectious Diseases Mental Health Neurology Obstetrics Orthopedics Public Health Respiratory Rheumatology Urology Track topics on Twitter Track topics that are important to you. MRI Evaluation of Chest Pain. Home » Topics » Radiology » Research » MRI Evaluation of Chest Pain. This study will assess the value of magnetic resonance imaging MRI in detecting heart attack and heart attack risk in patients who come to the hospital emergency room because of chest pain. This study will provide information that may improve emergency treatment of patients with acute chest pain by clarifying which patients require immediate medical treatment, which should be admitted to the hospital for further evaluation, and which may safely be discharged from the hospi...
http://bioportfolio.com/resources/trial/127081/Mri-Evaluation-Of-Chest-Pain.html
*  Ultra-high field MRI (3 teslas and more)
Ultra-high field MRI 3 teslas and more. Suscripción Suscribirse a IMAIOS. Suscripción institucional Solicitar suscripción institucional. White papers Search by topic to download case studies and white papers. Products Find out about technologies available, products and services. Events Events, Tradeshows and Medical Imaging Conferences. Ultra-high field MRI 3 teslas and more por Denis Hoa. To state the consequences of increasing the magnetic field on signal-to-noise ratio, relaxation times, SAR, artifacts, acoustic noise Describe the necessary adaptations in sequence parameters and equipment Set out the advantages and disadvantages of increasing magnetic field List the potential fields of application of ultra high field MRI. Magnetic susceptibility ↑↑ Greater sensitivity to magnetic susceptibility. Magnetic susceptibility artifacts. 3.0 T neuroimaging: technical considerations and clinical applications. Neuroimaging clinics of North America. Magnetic resonance imaging clinics of North America. Perspectives an...
https://imaios.com/es/e-Cursos/e-MRI/High-field-MRI-3T
*  Ultra-high field MRI (3 teslas and more)
Ultra-high field MRI 3 teslas and more. QEVLAR Radiology QEVLAR Quiz App: mobile and web-based training app for radiology residents. Suscripción Suscribirse a IMAIOS. White papers Search by topic to download case studies and white papers. Events Events, Tradeshows and Medical Imaging Conferences. Ultra-high field MRI 3 teslas and more por Denis Hoa. To state the consequences of increasing the magnetic field on signal-to-noise ratio, relaxation times, SAR, artifacts, acoustic noise Describe the necessary adaptations in sequence parameters and equipment Set out the advantages and disadvantages of increasing magnetic field List the potential fields of application of ultra high field MRI. Magnetic susceptibility artifacts. 3.0 T neuroimaging: technical considerations and clinical applications. Neuroimaging clinics of North America. Magnetic resonance imaging clinics of North America. Perspectives and limitations of parallel MR imaging at high field strengths. Neuroimaging clinics of North America. Neuroimaging cl...
https://imaios.com/es/e-Courses/e-MRI/High-field-MRI-3T
*  Ultra-high field MRI (3 teslas and more)
Ultra-high field MRI 3 teslas and more. White papers Search by topic to download case studies and white papers. Events Events, Tradeshows and Medical Imaging Conferences. Ultra-high field MRI 3 teslas and more von Denis Hoa. To state the consequences of increasing the magnetic field on signal-to-noise ratio, relaxation times, SAR, artifacts, acoustic noise Describe the necessary adaptations in sequence parameters and equipment Set out the advantages and disadvantages of increasing magnetic field List the potential fields of application of ultra high field MRI. Magnetic susceptibility artifacts. 3.0 T neuroimaging: technical considerations and clinical applications. Neuroimaging clinics of North America. Magnetic resonance imaging clinics of North America. Perspectives and limitations of parallel MR imaging at high field strengths. Neuroimaging clinics of North America. Neuroimaging clinics of North America. Magnetic resonance imaging clinics of North America. Comprehensive cardiac magnetic resonance imaging a...
https://imaios.com/de/e-Courses/e-MRI/High-field-MRI-3T
*  Lentiform nucleus - Psychology Wiki
... Wikia. Skip to Content Skip to Wiki Navigation Skip to Site Navigation. Search this wikia Search all of Wikia. Psychology Wiki Navigation On the Wiki. Psychology journals. The lentiform nucleus or lenticular nucleus describes the putamen and the globus pallidus within the basal ganglia. The lentiform nucleus lenticular nucleus; lenticula is lateral to the caudate nucleus and thalamus, and is seen only in sections of the hemisphere. frontal lobe : precentral gyrus primary motor cortex, 4, precentral sulcus, superior frontal gyrus 6, 8, middle frontal gyrus 46, inferior frontal gyrus Broca's area, 44 - pars opercularis, 45 - pars triangularis, prefrontal cortex orbitofrontal cortex, 9, 10, 11, 12, 47 parietal lobe : postcentral sulcus, postcentral gyrus 1, 2, 3, 43, superior parietal lobule 5, inferior parietal lobule 39 - angular gyrus, 40, precuneus 7, intraparietal sulcus. occipital lobe : primary visual cortex 17, cuneus, lingual gyrus, 18, 19 18 and 19 span whole lobe temporal lobe : transverse tempor...
http://psychology.wikia.com/wiki/Lentiform_nucleus?oldid=13684
*  MRI Result - What does it mean? - Neurology - MedHelp
MRI Result - What does it mean. - Neurology - MedHelp. Communities. Expert Forums. Health Tools. People. Full Site. Login. Signup. Communities Health Tools Information My MedHelp Login or. Signup. Diabetes Type 1. Type 2. Prevention. General Health Diet and Fitness. Women's Health. Men's Health. Heart Heart Disease. Heart Rhythm. High Blood Pressure. Pregnancy 18 - 24 years old. 25 - 34 years old. 35+ years old. Mental Health Anxiety. Depression. All Communities. Devices and Apps. Health Charts. Android Apps. iPhone and iPad Apps. Learn More. All Conditions. Diabetes. Pregnancy. Women's Health. Diet and Fitness. Heart Disease. Mental Health. Login. Find People. Help. Neurology Community. MRI Result - What does it mean. Post a Question. Back to Community. About This Community: This forum is for questions and support regarding neurology issues such as: Alzheimer's Disease, ALS, Autism, Brain Cancer, Cerebral Palsy, Chronic Pain, Epilepsy, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Dis...
http://medhelp.org/posts/Neurology/MRI-Result-----What-does-it-mean/show/11534
*  GUIDELINES FOR ORDERING INTRAVENOUS CONTRAST WITH MRI EXAMINATIONS | Blogs
GUIDELINES FOR ORDERING INTRAVENOUS CONTRAST WITH MRI EXAMINATIONS. GUIDELINES FOR ORDERING INTRAVENOUS CONTRAST WITH MRI EXAMINATIONS Posted on. A1 Medical Imaging Though CT scans and MRI scans are often ordered for the same reasons, intravenous contrast affects MRI examinations much differently than CT scans, so the indications for contrast MRI examinations are different from the indications for contrast CT scans. It is safe to assume in most cases that a non-contrast MRI is a very effective evaluation for most body organs in most situations and with most patients, though contrast MRI can be helpful in some specific situations. However MRI detects most pathology within most body organs without intravenous contrast and in some cases pathology may be less visible on a contrast MRI than on the non-contrast part of the MRI study whereas pathology is almost always more visible on a contrast CT than a non-contrast CT. Bone tumors are often less visible with contrast on MRI examinations. The main reason for orderi...
http://a1mri.com/blog/guidelines-for-ordering-intravenous-contrast-with-mri-examinations/
*  Cardiovascular magnetic resonance now an important first-line test | EurekAlert! Science News
Cardiovascular magnetic resonance now an important first-line test. EurekAlert. Breaking News. Breaking News. EurekAlert. About EurekAlert. Public Release: 2-Nov-2011 Cardiovascular magnetic resonance now an important first-line test Current issue of Progress in Cardiovascular Diseases explores the impact of CMR in clinical cardiology Elsevier Health Sciences. Karamitsos, MD, PhD, and Stefan Neubauer, MD, of the University of Oxford Centre for Clinical Magnetic Resonance Research and the Department of Cardiovascular Medicine, John Radcliffe Hospital, Oxford, UK. Francis, Stefan Neubauer CMR allows an accurate and reproducible assessment of cardiovascular anatomy and ventricular function, and it also provides detailed myocardial tissue characterization. The Role of Cardiovascular Magnetic Resonance in the Evaluation of Valve Disease Theodoros D. Assessment of Pericardial Diseases and Cardiac Masses with Cardiovascular Magnetic Resonance Dana Dawson, Raad Mohiaddin This review focuses on the state-of the- art a...
http://eurekalert.org/pub_releases/2011-11/ehs-cmr110211.php
*  Just got my MRI results :(
Just got my MRI results :. Register. Help. Remember Me. What's New. Forum. New Posts. FAQ. Calendar. Community. Member List. Forum Actions. Mark Forums Read. Quick Links. Today's Posts. View Site Leaders. Advanced Search. Forum. Scoliosis. Kyphosis, Lordosis and Flatback Room. Just got my MRI results :. If this is your first visit, be sure to check out the FAQ by clicking the link above. You will have to register for an account before you can post. Please note that the sign up process is moderated, so once you have provided email verification it may be a day or two before your account is validated by staff, although we will get to it as soon as we can. If you are a parent, please use your own date of birth rather than that of your child so that the registration process doesn't get held up by us needing to ask you for further details : Please click here to register. Sad news It is with a heavy heart that we tell you all that our dear staff member Tonibunny, who was with SSo from the start and was a good friend...
http://scoliosis-support.org/showthread.php?17856-Just-got-my-MRI-results-(
*  Functional magnetic resonance imaging - Psychology Wiki
... Edit this Page. Functional magnetic resonance imaging Redirected from Functional MRI. Edit. Classic editor. Functional MRI or functional Magnetic Resonance Imaging fMRI is a type of specialized MRI scan. The local response to this oxygen utilization is an increase in blood flow to regions of increased neural activity, occurring after a delay of approximately 1-5 seconds. Blood-oxygen-level dependent or BOLD fMRI is a method of observing which areas of the brain are active at any given time. It can record on a spatial resolution in the region of 3-6 millimeters, but with relatively poor temporal resolution on the order of seconds compared with techniques such as EEG. EEG measures electrical/neural activity while fMRI measures blood activity, which has a longer response. To alleviate this problem, some research groups are combining fMRI signals that have relatively high spatial resolution with signals recorded with other techniuqes, electroencephalography EEG or magnetoencephalography MEG, which have highe...
http://psychology.wikia.com/wiki/Functional_MRI
*  Early brain enlargement and elevated extra-axial fluid in infants who develop autism spectrum disord
... er. Early brain enlargement and elevated extra-axial fluid in infants who develop autism spectrum disorder. Nordahl 1 The Medical Investigation of Neurodevelopmental Disorders MIND Institute and Department of Psychiatry and Behavioural Sciences, UC Davis School of Medicine, University of California, Davis, Sacramento, CA, USA. Infants were classified as meeting criteria for autism spectrum disorder, other developmental delays, or typical development at 24 months or later mean age at outcome: 32.5 months. The amount of extra-axial fluid detected as early as 6 months was predictive of more severe autism spectrum disorder symptoms at the time of outcome. Infants who developed autism spectrum disorder also had significantly larger total cerebral volumes at both 12–15 and 18–24 months of age. autism magnetic resonance imaging infant brain development cerebrospinal fluid external hydrocephalus Introduction. ASD, other developmental delays, high-risk typical development, low-risk typical development significantl...
http://brain.oxfordjournals.org/content/early/2013/07/09/brain.awt166
*  Nanoscale Resolution MRI Has Been Experimentally Achieved | 33rd Square
Nanoscale Resolution MRI Has Been Experimentally Achieved. 33rd Square. Search form is empty. Home Write for Us Topics Artificial Intelligence AI Computers Deep Learning Cognitive Neuroscience. Futurism The Future The Singularity Exponential Technology Transhumanism Technological Unemployment. Robotics Robots Humanoid Robots Drones Military Robots. Science Medicine Genomics Neuroscience Physics Space. Gadgets Automotive Technology Interfaces Design. Contact Us. WHAT'S NEW. Loading... Newer Post. Older Post. Home. Nanoscale Resolution MRI Has Been Experimentally Achieved. Wednesday, October 2, 2013. Wednesday, October 02, 2013. breakthrough, imaging, magnetic resonance imaging, MRI, mri sensitivity, nanoscale, Raffi Budakian, University of Illinois at Urbana Champaign. Imaging. A team of researchers has devised a novel nuclear magnetic resonance imaging MRI technique that delivers a roughly 10 nanometer spatial resolution. This represents a significant advance in MRI sensitivity with the highest-resolution exp...
http://33rdsquare.com/2013/10/nanoscale-resolution-mri-has-been.html
*  MRI Results - Neurology - MedHelp
... Communities. Expert Forums. Health Tools. People. Full Site. Login. Signup. Communities Health Tools Information My MedHelp Login or. Signup. Diabetes Type 1. Type 2. Prevention. General Health Diet and Fitness. Women's Health. Men's Health. Heart Heart Disease. Heart Rhythm. High Blood Pressure. Pregnancy 18 - 24 years old. 25 - 34 years old. 35+ years old. Mental Health Anxiety. Depression. All Communities. Devices and Apps. Health Charts. Android Apps. iPhone and iPad Apps. Learn More. All Conditions. Diabetes. Pregnancy. Women's Health. Diet and Fitness. Heart Disease. Mental Health. Login. Find People. Help. Neurology Community. MRI Results. Post a Question. Back to Community. About This Community: This forum is for questions and support regarding neurology issues such as: Alzheimer's Disease, ALS, Autism, Brain Cancer, Cerebral Palsy, Chronic Pain, Epilepsy, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Disorders, Stroke, Traumatic Brain Injury. View community archives. Font...
http://medhelp.org/posts/Neurology/MRI-Results/show/1450621
*  .. Characterization of Cardiac Tumors in Children by Cardiovascular Magnetic Resonance Imaging: A M
Characterization of Cardiac Tumors in Children by Cardiovascular Magnetic Resonance Imaging: A Multicenter Experience Posted on August 24, 2011 August 31, 2011 by Jacobo Kirsch. J Am Coll Cardiol. OBJECTIVES: Individual centers have relatively little experience with diagnostic imaging of cardiac tumors in children, because of their low prevalence. The accuracy of cardiac MRI diagnosis on the basis of a pre-defined set of criteria has not been tested.The aim of this study was to report the results of an international multicenter experience of cardiac magnetic resonance imaging MRI evaluation of cardiac tumors in children, each with histology correlation or a diagnosis of tuberous sclerosis, and to determine which characteristics are predictive of tumor type. Inclusion criteria comprised: 1 age at diagnosis 18 years; 2 cardiac MRI evaluation of cardiac tumor; and 3 histologic diagnosis or diagnosis of tuberous sclerosis. Data from the cardiac MRI images were analyzed for mass characteristics. On the basis of pr...
http://thepreparedminds.com/archives/3697
*  On clustering fMRI time series - DTU Orbit
On clustering fMRI time series. Publication : Research - peer-review › Journal article – Annual report year: 1999. On clustering fMRI time series. / Goutte, Cyril. ; Toft, Peter Aundal ; Rostrup, E. ; Hansen, Lars Kai. Publication : Research - peer-review › Journal article – Annual report year: 1999. , Toft, PA , Rostrup, E , Nielsen, FÅ. Hansen, LK 1999, ' On clustering fMRI time series '. NeuroImage , vol 9, no. On clustering fMRI time series. NeuroImage , 9 3 , 298-310. , Toft PA , Rostrup E , Nielsen FÅ. On clustering fMRI time series. NeuroImage. "On clustering fMRI time series". , Toft PA , Rostrup E , Nielsen FÅ. On clustering fMRI time series. NeuroImage. Goutte, Cyril. ; Toft, Peter Aundal ; Rostrup, E. ; Hansen, Lars Kai /. On clustering fMRI time series. Publication : Research - peer-review › Journal article – Annual report year: 1999. title = "On clustering fMRI time series",. author = "Cyril Goutte and Toft, {Peter Aundal} and E. Rostrup and Nielsen, {Finn Årup} and Hansen, {Lars Kai}",. T1 - On ...
http://orbit.dtu.dk/en/publications/on-clustering-fmri-time-series(b7b4077a-893f-4161-9e3a-c8698424fa56)/export.html
*  Medical Xpress - functional magnetic resonance imaging
... Home functional magnetic resonance imaging. News tagged with functional magnetic resonance imaging. 1 week. 1 week. 1 week. Related topics: brain · brain activity · brain regions · brain images · brain function. Psychology & Psychiatry. Experienced meditators seem to be able switch off areas of the brain associated with daydreaming as well as psychiatric disorders such as autism and schizophrenia, according to a new brain imaging study by Yale researchers. Neuroscience. Brain imaging reveals the movies in our mind. Psychology & Psychiatry. Fourteen-year-olds who were frequent video gamers had more gray matter in the rewards center of the brain than peers who didn't play video games as much - suggesting that gaming may be correlated to changes in the brain, ... Neuroscience. Meditation produces enduring changes in emotional processing in the brain, study shows. Neuroscience. Neuroscience. Neuroscience. Neuroscience. Neuroscience. Face the facts: Neural integration transforms unconscious face detection int...
http://medicalxpress.com/tags/functional magnetic resonance imaging/sort/popular/all/
*  Dissociations Between Behavioral and fMRI Measures in Brain Injury
... dissociations between behavioural and functional magnetic resonance imaging based evaluations of cognitive function after brain injury jonathan c bardin joseph j fins douglas i katz jennifer hersh linda a heier karsten tabelow jonathan p dyke douglas j ballon nicholas d schiff and henning u voss brain abstract functional neuroimaging methods hold promise for the identification of cognitive function and communication capacity in some severely brain injured patients who may not retain sufficient motor function to demonstrate their abilities we studied seven severely brain injured patients and a control group of subjects using a novel hierarchical functional magnetic resonance imaging assessment utilizing mental imagery responses whereas the control group showed consistent and accurate for communication blood oxygen level dependent responses without exception the brain injured subjects showed a wide variation in the correlation of blood oxygen level dependent responses and overt behavioural responses specif...
http://www-users.med.cornell.edu/~jdvicto/bafikz11.html
*  Re: Bug#522353: ITP: python-nipy -- Analysis of structural and functional neuroimaging data
... To : Yaroslav Halchenko debian@onerussian.com Cc : Debian Med Project List debian-med@lists.debian.org Subject : Re: Bug#522353: ITP: python-nipy -- Analysis of structural and functional neuroimaging data From : Andreas Tille tillea@rki.de Date : Fri, 3 Apr 2009 07:08:16 +0200 CEST Message-id : alpine.DEB.2.00.0904030706530.19574@wr-linux02 In-reply-to : 20090403020841.29209.25315.reportbug@ravana.ravana.rutgers.edu References : 20090403020841.29209.25315.reportbug@ravana.ravana.rutgers.edu. Hi, I just added the WNPP bug number to the tasks file where we just had an entry for nipy in imaging-dev. Thanks for the ITP Yaroslav. Kind regards Andreas. On Thu, 2 Apr 2009, Yaroslav Halchenko wrote:. Package: wnpp Severity: wishlist Owner: Yaroslav Halchenko debian@onerussian.com * Package name : python-nipy Version : 0.1.4 Upstream Author : NiPy Team nipy-devel@neuroimaging.scipy.org * URL : http://neuroimaging.scipy.org * License : BSD Programming Lang: Python Description : Analysis of structural and functiona...
https://lists.debian.org/debian-med/2009/04/msg00008.html
*  NIF | Searching in Literature
Leaving Community. With the advent of functional neuroimaging techniques, in particular functional magnetic resonance imaging fMRI, we have gained greater insight into the neural correlates of visuospatial function. There was significant behavioral-physiological association in right ventral extrastriate cortex for the line orientation task and in bilateral predominantly right superior parietal lobule for the mental rotation task. Adolescent Adult Brain Mapping Humans Magnetic Resonance Imaging Male Nerve Net Reaction Time Space Perception Visual Cortex Visual Perception. Brain-mapping data from Brodmann.31 left precuneus; LOBE.PARIETAL; SUL.SubPS is available in SumsDB, task description: Transformation. Brain-mapping data from Brodmann.19 lingual gyrus visual cortex ; LOBE.OCCIPITAL; SUL.CoS is available in SumsDB, task description: Transformation. Brain-mapping data from Brodmann.7 right precuneus; LOBE.PARIETAL; SUL.POS is available in SumsDB, task description: Transformation. Brain-mapping data from Brodma...
https://scicrunch.org/11388925/resource/nif-0000-00016
*  The application of T1 and T2 relaxation time and magnetization transfer ratios to the early diagnosi
... s of patellar cartilage osteoarthritis - Springer. Search Options. Advanced Search. Search Help. Search Menu. Sign up / Log in English. Deutsch. Academic edition. Corporate edition. Skip to: Main content Side column. Home. Contact Us. Look Inside. Get Access. Find out how to access preview-only content. Scientific Article. Skeletal Radiology November 2009, Volume 38, Issue 11, pp 1055-1062 First online: 18 August 2009. The application of T1 and T2 relaxation time and magnetization transfer ratios to the early diagnosis of patellar cartilage osteoarthritis. Weiwu Yao. Affiliated with Department of Radiology, Shanghai No.6 People’s Hospital affiliated to Shanghai Jiaotong University. Email author., Nan Qu. Affiliated with Department of Radiology, Shanghai No.6 People’s Hospital affiliated to Shanghai Jiaotong University., Zhihua Lu. Affiliated with Department of Radiology, Shanghai No.6 People’s Hospital affiliated to Shanghai Jiaotong University., Shixun Yang. Affiliated with Department of Radiology, Shang...
http://link.springer.com/article/10.1007/s00256-009-0769-8
*  Brede Database - brede loc query.pl - Query for locations
... Brede Database - Talairach coordinate search. brede loc query Search after locations Talairach coordinates in the Brede Database. Silent word generation WOEXP: 262 3 6.7 -43 5 36 91 Left midfrontal Alzheimer's disease versus healthy WOEXP: 291 4 7.5 -31 -2 36 25. Left precentral gyrus Mental rotation of abstract figures versus object determination or dots counting WOEXP: 84 5 8.1 -39 0 29 137. Left precentral gyrus Mental rotation of abstract figures versus rest WOEXP: 79 7 9.1 -41 -3 44 179. Left middle frontal gyrus Semantic versus case WOEXP: 550 10 10.4 -47 -1 37 88. Left precentral gyrus Activation in sadness film viewing versus neutral film viewing WOEXP: 282 11 10.5 -33 11 36 110 Left lateral frontal Spatial intelligence WOEXP: 339 12 10.7 -40 8 28 176. Verbal fluency WOEXP: 539 13 10.7 -32 -3 44 3 Left frontal eye field Saccade versus central contrast WOEXP: 7 14 10.7 -45 1 29 81 Left middle frontal gyrus/precentral sulcus Shape matching WOEXP: 253 15 10.9 -45 -5 38 88. Left precentral gyrus Acti...
http://hendrix.imm.dtu.dk/cgi-bin/brede_loc_query.pl?q=-38 2 37
*  Functional Magnetic Resonance Imaging of Compensatory Neural Recruitment in Aging and Risk for Alzhe
... imer’s Disease: Review and Recommendations - FullText - Dementia and Geriatric Cognitive Disorders 2009, Vol. Connecting the World of Biomedical Science. Journals. Book Series. Collections. Collections Overview. eJournal Collection. eJournal Backfile Collection. eJournal Archive Collection. eBook Series Collection. eBook Non-Series Collection. eBook Collection German. eBook Archive Collection. Psychology/ Psychiatry. Services. Services Subscriptions. Media Relations. Customer Service. Downloads Journals and Book Series Catalogue. Customer Service Contact Form. Resources. Resources Authors. Media Relations. Contact Us Contact Information. Journal Contact. Journal Contact. Free Access Dement Geriatr Cogn Disord 2009;27:1–10 DOI:10.1159/000182420. Functional Magnetic Resonance Imaging of Compensatory Neural Recruitment in Aging and Risk for Alzheimer’s Disease: Review and Recommendations Han S.D. a Department of Psychology, Loyola University Chicago, Chicago, Ill., b Department of Neurology and c Neuroscienc...
http://karger.com/Article/FullText/182420
*  ARTICLES | Journal of Neurophysiology
Intrinsic Functional Relations Between Human Cerebral Cortex and Thalamus. This activity is highly correlated within specific networks of the cerebral cortex when assessed with resting-state functional magnetic resonance imaging fMRI blood oxygen level–dependent BOLD imaging. Here we mapped correlations in resting-state activity between the human thalamus and the cerebral cortex in adult humans using fMRI BOLD imaging. These results extend our understanding of the intrinsic network organization of the human brain to the thalamus and highlight the potential of resting-state fMRI BOLD imaging to elucidate thalamocortical relationships. Previous resting-state functional connectivity studies using fMRI BOLD imaging have occasionally noted significant thalamocortical correlations Anand et al. The lack of specificity with regard to the thalamus in prior resting-state BOLD correlation mapping likely reflects not only shared neuronal signals propagated over multiple brain areas but also spatially uniform fluctuations...
http://jn.physiology.org/content/100/4/1740.long
*  In Kyoon Lyoo
2006 White matter hyperintensities in subjects with bipolar disorder Kyung Heup Ahn Mclean Brain Imaging Center and Harvard Medical School, Belmont, MA, USA Psychiatry Clin Neurosci 58:516-21. 2008 Frontal lobe gray matter density decreases in bipolar I disorder In Kyoon Lyoo Brain Imaging Center, McLean Hospital, Belmont, Massachusetts 02478, USA Biol Psychiatry 55:648-51. White matter hyperintensities in subjects with bipolar disorder Kyung Heup Ahn Mclean Brain Imaging Center and Harvard Medical School, Belmont, MA, USA Psychiatry Clin Neurosci 58:516-21. Frontal lobe gray matter density decreases in bipolar I disorder In Kyoon Lyoo Brain Imaging Center, McLean Hospital, Belmont, Massachusetts 02478, USA Biol Psychiatry 55:648-51. White matter hyperintensities in subjects with cocaine and opiate dependence and healthy comparison subjects In Kyoon Lyoo McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA Psychiatry Res 131:135-45....
http://labome.org/expert/usa/harvard/lyoo/in-kyoon-lyoo-471799.html
*  Phys.org - functional magnetic resonance imaging
... Home functional magnetic resonance imaging. News tagged with functional magnetic resonance imaging. sort by:. Date. 6 hours. 12 hours. 1 day. 3 days. all. Rank. Last day. 1 week. 1 month. all. LiveRank. Last day. 1 week. 1 month. all. Popular. Last day. 1 week. 1 month. all. Related topics:. brain · brain activity · brain regions · brain images · brain function. How to trust what your customers say about your brand. Marketers would love to get inside the consumer brain. And now they can. Researchers at UC Berkeley's Haas School of Business are using functional magnetic resonance imaging fMRI to see if what people say about brands matches ... Aug 04, 2015 in Economics & Business. 12 0. What evolved first—a dexterous hand or an agile foot. Resolving a long-standing mystery in human evolution, new research from the RIKEN Brain Science Institute indicates that early hominids developed finger dexterity and tool use ability before the development of bipedal locomotion. Oct 07, 2013 in Evolution. 0 11. Humans f...
http://phys.org/tags/functional magnetic resonance imaging/
*  In Kyoon Lyoo
Publications White matter hyperintensities in subjects with cocaine and opiate dependence and healthy comparison subjects In Kyoon Lyoo McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA Psychiatry Res 131:135-45. 2007 Frontal lobe gray matter density decreases in bipolar I disorder In Kyoon Lyoo Brain Imaging Center, McLean Hospital, Belmont, Massachusetts 02478, USA Biol Psychiatry 55:648-51. 2004 White matter hyperintensities in subjects with bipolar disorder Kyung Heup Ahn Mclean Brain Imaging Center and Harvard Medical School, Belmont, MA, USA Psychiatry Clin Neurosci 58:516-21. Detail Information Publications 64 White matter hyperintensities in subjects with cocaine and opiate dependence and healthy comparison subjects In Kyoon Lyoo McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA Psychiatry Res 131:135-45. Frontal lobe gray matter density decr...
http://labome.org/expert/lyoo/in-kyoon-lyoo-315629.html
*  Court Sense Thompson out for now, MRI results still pending
... Mobile. Weather. Calendars. Place Ad. Home News Sports Business Editorial Features Pulse Travel. Multimedia Classifieds. Cars. Jobs. Homes. Top Stories. Court Sense Thompson update // Arnold ESPN chat transcript up Concern about J. Thomas. Thompson out for now, MRI results still pending February 16th, 2011 By Brian McInnis Share. Hawaii senior point guard Hiram Thompson watched team practice from the sidelines today with his left arm in a sling, a result of the hard fall he suffered in the second half of the team's win over Nevada on Monday. Thompson had an MRI taken on his elbow, which the tri-captain said he hyperextended when he braced his arm straight to cushion the fall. "The doctor still needs to look at the MRI to see exactly what it is," Thompson said. "To see if something's wrong with it, the ligaments in my elbow.". He was staying optimistic about a quick return. "Hopefully I'll be able to get back soon, we'll see when," Thompson said. "I have to keep it stabilized for a while, not do anything ...
http://courtsense.staradvertiserblogs.com/2011/02/16/thompson-out-for-now-mri-results-still-pending/
*  Computed Tomography of the Body with Magnetic Resonance Imaging: Thorax and neck - Albert A. Moss -
... Google Books. Books. books.google.com - Critically acclaimed best seller on CT scanning techniques - now completely updated and expanded to include magnetic resonance imaging. This new 3-volume edition gives you everything you need to know about CT and MRI of the thorax and neck, musuloskeletal system, and abdomen. https://books.google.com/books/about/Computed Tomography of the Body with Mag.html?id=RqhrAAAAMAAJ utm source=gb-gplus-share Computed Tomography of the Body with Magnetic Resonance Imaging: Thorax and neck My library. Books-A-Million. Computed Tomography of the Body with Magnetic Resonance Imaging: Thorax and neck. Moss Saunders, 1992 - Medical - 1383 pages 0 Reviews https://books.google.com/books/about/Computed Tomography of the Body with Mag.html?id=RqhrAAAAMAAJ. Critically acclaimed best seller on CT scanning techniques - now completely updated and expanded to include magnetic resonance imaging. This new 3-volume edition gives you everything you need to know about CT and MRI of the thorax a...
https://books.google.com/books?id=RqhrAAAAMAAJ&q=fluid&source=gbs_word_cloud_r&hl=en
*  Research Projects
Bakker, "Measuring the arterial input function with gradient echo sequences", Magnetic Resonance in Medicine, 2003, vol. Bakker, "Model of the human vasculature for studying the influence of contrast injection speed on cerebral perfusion MRI", Magnetic Resonance in Medicine, 2003, vol. van der Grond, "Quantitative cerebral perfusion MRI and CO2 reactivity measurements in patients with symptomatic internal carotid artery occlusion", NeuroImage, 2002, vol. Viergever, "Simultaneous quantitative cerebral perfusion and Gd-DTPA extravasation measurement with dual-echo dynamic susceptibility contrast MRI", Magnetic Resonance in Medicine, 2000, vol. Bakker, "A model of the human vasculature for studying the influence of the contrast injection speed on cerebral perfusion MRI", International Society Magnetic Resonance in Medicine, 2003, p. Viergever, "Measurement of a calibration curve of Gd-DTPA in flowing human blood for arterial input function measurements", International Society Magnetic Resonance in Medicine, 2002...
http://isi.uu.nl/Research/Projects/project.php?P=102
*  Functional MRI evidence for a role of frontal and inferior temporal cortex in amodal components of p
Skip to main content OUP user menu Login/Register Help You are here Journals Medicine & Health Brain Volume 123, Issue 3 Pp. 620 - 640 Brain A Journal of Neurology About About the journal Editorial board Rights & permissions Publishers' books for review Journal disclaimer Submit Instructions to authors Online submission Submit now Self-archiving policy Offprint order form Open access options Subscribe Advertise Corporate services Advertising Reprints and ePrints Sponsored supplements Books and custom publishing Jobs Editor Dimitri M. Kullmann Impact factor 9.196 5 Year impact factor 10.418 Published on behalf of The Guarantors of Brain Functional MRI evidence for a role of frontal and inferior temporal cortex in amodal components of priming Randy L. Buckner, Wilma Koutstaal, Daniel L. Schacter, Bruce R. Rosen DOI: http://dx.doi.org/10.1093/brain/123.3.620 620-640 First published online: 1 March 2000 Article Figures & data Information & metrics Explore PDF Summary Changes in human brain activity a...
http://brain.oxfordjournals.org/content/123/3/620.long
*  Causal Modelling and Brain Connectivity in Functional Magnetic Resonance Imaging
How Can One Model Brain Connectivity. Where Do DCM and GCM Come From. Causal Modelling and Brain Connectivity in Functional Magnetic Resonance Imaging Karl Friston. One approach—dynamic causal modelling DCM —tries to model how activity in one brain area is affected by activity in another using models of effective connectivity, while the other—Granger causal modelling GCM —tests for the signature of these influences by looking for correlations in the activity of two or more regions using models of functional connectivity. Causality and Coupling In 2003, two techniques were introduced that addressed temporal dependencies and directed influences among distributed brain responses. These were DCM [ 2 ] and GCM [ 3, 4 ]; both appeal to causality and rest on time-series models of fMRI data. How Can One Model Brain Connectivity. In this sense DCM is a model of effective connectivity, whereas GCM is used to infer functional connectivity. The convolution o...
http://pubmedcentralcanada.ca/pmcc/articles/PMC2642881/?lang=en-ca
*  Magnetic Resonance Imaging (MRI) Systems Market by Architecture, Field Strength & Application - Glob
Magnetic Resonance Imaging MRI Systems Market by Architecture, Field Strength Application - Global Forecast to 2020. Home. Categories. About Us. FAQs. Charity. Contact Us. Advanced Search. 1-800-526-8630 U.S. TOLL FREE. 1-917-300-0470 EAST COAST U.S. +353-1-416-8900 REST OF WORLD. HOME. CATEGORIES. ABOUT US. FAQs. CONTACT US. LOGIN / REGISTER. USD $ EUR. GBP. ▼ USD $. USD $. EUR. GBP. 0 CHECKOUT. SEARCH. ADVANCED SEARCH. Price From: EUR 4302 USD 4,650 GBP 3,175. View Pricing You are here:. Home. Categories. Pharmaceuticals and Healthcare. Healthcare and Medical Devices. Medical Devices. Medical Imaging. Magnetic Resonance Imaging MRI. Magnetic Resonance Imaging MRI Systems Market by Architecture, Field Strength Application - Global Forecast to 2020 ID: 3118912 March 2015 Region: Global 202 Pages Markets and Markets. DESCRIPTION. TABLE OF CONTENTS. SUMMARY. COMPANIES MENTIONED. FORMATS / FAQ. 1 of 5 The magnetic resonance imaging system market is expected to grow at a single-digit CAGR of 5....
http://researchandmarkets.com/reports/3118912/magnetic-resonance-imaging-mri-systems-market
*  Magnetic resonance velocimetry: applications of magnetic resonance imaging in the measurement of flu
... id motion - Springer. Search Options. Advanced Search. Search Help. Search Menu. Sign up / Log in English. Deutsch. Academic edition. Corporate edition. Skip to: Main content Side column. Home. Contact Us. Look Inside. Get Access. Find out how to access preview-only content. Review Article. Experiments in Fluids December 2007, Volume 43, Issue 6, pp 823-858 First online: 23 October 2007. Magnetic resonance velocimetry: applications of magnetic resonance imaging in the measurement of fluid motion. Christopher J. Elkins. Affiliated with Mechanical Engineering Department, Stanford University. Email author., Marcus T. Alley. Affiliated with Department of Radiology, Lucas MRI/S Center, Stanford University. . Rent the article at a discount Rent now. * Final gross prices may vary according to local VAT. Get Access. Abstract Magnetic resonance velocimetry MRV is a non-invasive technique capable of measuring the three-component mean velocity field in complex three-dimensional geometries with either steady or perio...
http://link.springer.com/article/10.1007/s00348-007-0383-2
*  Magnetic Resonance in Medical Sciences
Purpose: We investigated whether corticomedullary differentiation CMD increased to a pseudonormal appearance on T 1 -weighted magnetic resonance MR images in patients with chronic kidney disease CKD with cirrhosis compared with patients with CKD without chronic liver disease. We observed no significant correlation between CMD and eGFR in patients with and without cirrhosis P 0.05, r = 0.62. Conclusion: CMD of the kidney had a pseudonormal appearance on T 1 -weighted MR imaging in patients with CKD with cirrhosis. Purpose: We evaluated trunk muscle recruitment in abdominal and back exercises with magnetic resonance MR diffusion-weighted imaging. We obtained axial diffusion-weighted images of the trunk before and after each exercise using a 1.5-tesla MR system, calculated apparent diffusion coefficient ADC values from the right and left rectus abdominis, lateral abdominal, psoas major, quadratus lumborum, and intrinsic back muscles to evaluate the activity of these muscles during each exercise, and compared ADC...
https://jstage.jst.go.jp/browse/mrms
*  Helping on MRI scans results - Multiple Sclerosis - MedHelp
... Communities. Expert Forums. Health Tools. People. Full Site. Login. Signup. Communities Health Tools Information My MedHelp Login or. Signup. Diabetes Type 1. Type 2. Prevention. General Health Diet and Fitness. Women's Health. Men's Health. Heart Heart Disease. Heart Rhythm. High Blood Pressure. Pregnancy 18 - 24 years old. 25 - 34 years old. 35+ years old. Mental Health Anxiety. Depression. All Communities. Devices and Apps. Health Charts. Android Apps. iPhone and iPad Apps. Learn More. All Conditions. Diabetes. Pregnancy. Women's Health. Diet and Fitness. Heart Disease. Mental Health. Login. Find People. Help. Multiple Sclerosis Community. Helping on MRI scans results. Post a Question. Back to Community. About This Community: Our Patient-to-Patient MS Forum is where you can communicate with other people who share your interest in Multiple Sclerosis. This forum is not monitored by medical professionals. View community archives. Font Size: A A A. Background:. Search this Community:. Go. By gmac353. Apr ...
http://medhelp.org/posts/Multiple-Sclerosis/Helping-on-MRI-scans-results/show/1924666
*  Characterizing the relationship between functional MRI-derived measures and clinical outcomes in pat
... ients with vascular lesions - ResearchGate. Article Characterizing the relationship between functional MRI-derived measures and clinical outcomes in patients with vascular lesions. Thomas Anthony Gallagher. Impact Factor: 2.11. This study further examines the relationship between LAD, focusing on a host of vascular lesions and pre- and posttreatment morbidity. These patients underwent pretreatment fMRI-based motor mapping n = 72 or language mapping n = 84. Results: In patients with no pretreatment deficits, there was trend for a significant relationship between the Wernicke area LAD and posttreatment language deficits. In patients with or without pretreatment deficits, a trend toward significance was observed between sensorimotor LAD and posttreatment motor deficits. Impact of Brain Tumor Location on Morbidity and Mortality: A Retrospective Functional MR Imaging Study. Our study evaluated the efficacy of clinical fMRI by analyzing the relationship between the distance from the tumor border to the area of ...
http://researchgate.net/publication/236095679_Characterizing_the_relationship_between_functional_MRI-derived_measures_and_clinical_outcomes_in_patients_with_vascular_lesions
*  PLOS ONE: Rituximab in Relapsing and Progressive Forms of Multiple Sclerosis: A Systematic Review
... Sum of PLOS and PubMed Central page views and downloads. Article. For the RRMS studies, an open-label phase I study found that rituximab reduced the annualized relapse rate to 0.25 from pre-therapy baseline to week 24, while in the randomized placebo-controlled phase II trial, annualized relapse rates were 0.37 in the rituximab group and 0.84 in the placebo group p = 0.04 at week 24. As secondary outcomes we considered: i the annualized relapse rate at the end of the study period and ii the number of gadolinium-enhancing Gad-enhancing lesions on the T1 brain MRI scans and number of new T2 bright lesions on the brain MRI scans. Patients received brain MRI scans with and without gadolinium at baseline for the four studies and at weeks 4,8,12,24,36,48,60 and 72 for study 1., the primary outcome was the cumulative number of Gad-enhancing lesions on T1-weighted MRI brain scans at weeks 12, 16, 20 and 24. considered the reduction in the sum of Gad-enhancing lesions on T1 MRI brain scans at weeks 12, 16 and 20,...
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0066308
*  Advances in magnetic resonance imaging: how they are changing the management of prostate cancer
... Radboud Repository. Advances in magnetic resonance imaging: how they are changing the management of prostate cancer. NCMLS 2A: Energy and Redox Metabolism ONCOL 5: Aetiology, screening and detection ONCOL 3: Translational research ONCOL 5: Aetiology, screening and detection. CONTEXT: Although magnetic resonance imaging MRI is emerging as the most commonly used imaging modality for prostate cancer PCa detection, treatment planning, and follow-up, its acceptance has not been uniform. Recently, great interest has been shown in multiparametric MRI, which combines anatomic T2-weighted T2W imaging with MR spectroscopic imaging MRSI, dynamic contrast-enhanced MRI DCE-MRI, and diffusion-weighted imaging DWI. OBJECTIVE: The aim of this article is to review the current roles of these MR techniques in different aspects of PCa management: initial diagnosis, biopsy strategies, planning of radical prostatectomy RP and external radiation therapy RT, and implementation of alternative focal therapies. EVIDENCE SYNTHESIS:...
http://repository.ubn.ru.nl/handle/2066/97614
*  Randall C. O'Reilly's Online Publications
O'Reilly's Online Publications. O'Reilly's Online Publications Please visit the NEW wiki for Online Papers: Online Papers. O'Reilly, R.C. Abstract: Control processes are critical for both facilitating and suppressing memory retrieval, but these processes are not well understood. No-Think condition, revealed the classic TNT pattern of enhanced memory for successful cued-retrieval and degraded memory for cued-suppression. controlled suppression, results showed more prominent Theta oscillations 3 to 8Hz in controlled retrieval. & O'Reilly, R.C. Strategic Cognitive Sequencing: A Computational Cognitive Neuroscience Approach. The first addresses how the prefrontal cortex PFC and basal ganglia BG cooperate to perform trial-and-error learning of short sequences; the next, how several areas of PFC learn to make predictions of likely reward, and how this contributes to the BG making decisions at the level of strategies. The third models address how PFC, BG, parietal cortex, and hippocampus can work together to memoriz...
http://psych.colorado.edu/~oreilly/pubs-abstr.html
*  Voxel-based morphometry
... 'Voxel-based morphometry' VBM is a neuroimaging analysis technique that allows investigation of focal differences in brain anatomy, using the statistical approach of ' statistical parametric mapping '. Smaller differences in volume may be overlooked. VBM registers every brain to a template, which gets rid of most of the large differences in brain anatomy among people. Then the brain images are smoothed so that each voxel represents the average of itself and its neighbors. Finally, the image volume is compared across brains at every voxel. For the cerebral cortex, it has been shown that volume differences identified with VBM may reflect mostly differences in surface area of the cortex, than in cortical thickness. The VBM analysis showed the back part of the posterior hippocampus was on average larger in the taxi drivers compared to control subjects while the anterior hippocampus was smaller. London taxi drivers need good spatial navigational skills and scientists have usually associated hippocampus with t...
https://en.wikipedia.org/wiki/Voxel-based_morphometry
*  Fetal MRI - MR-TIP: Database
... Database. News. Resources. MRI Safety. Images. Sliders. Resources. 'Fetal MRI'. News 1. Resources 2. Fetal MRI. Ultrasound imaging is the primary fetal monitoring modality during pregnancy, nevertheless fetal MRI is increasingly used to image anatomical regions and structures difficult to see with sonography. Magnetic resonance imaging of the fetus provides multiplanar views also in sub-optimal positions, better characterization of anatomic details of e.g. Ultrafast MRI techniques e.g., single shot techniques like Half Fourier Acquisition Single shot Turbo spin Echo HASTE enable images to be acquired in less than one second to eliminate fetal motion. For Ultrasound Imaging USI see Fetal Ultrasound at US-TIP.com. Images, Movies, Sliders :. Courtesy of Robert R. Edelman. Courtesy of Robert R. Edelman. Courtesy of Robert R. Edelman. Fetal Ultrasound, 4D Ultrasound. Pregnancy. Single Shot Technique. Further Reading:. Untangling the Maze, Imaging the Fetus Tuesday, 30 September 2014 by www.newswise.com. 3-T M...
http://mr-tip.com/serv1.php?type=db1&dbs=Fetal MRI
*  Hyperintensity
'Hyperintensities' refer to areas of high intensity on types of magnetic resonance imaging MRI scans of the human brain or that of other mammals. These small regions of high intensity are observed on T2 weighted MRI images typically created using 3D FLAIR within cerebral white matter 'white matter lesions', ' white matter hyperintensities ' or 'WMH'. or subcortical gray matter 'gray matter hyperintensities' or 'GMH'. For example deep white matter hyperintensites are 2.5 to 3 times more likely to occur in bipolar disorder and major depressive disorder than control subjects. 4 Hyperintensities appear as "bright signals" bright areas on an MRI image and the term "'bright signal'" is occasionally used as a synonym for a hyperintensity. Deep white matter hyperintensites occur deep within white matter, periventricular white matter hyperintensities occur adjacent to the lateral ventricles and subcortical hyperintensities occur in the basal ganglia. 6 Causes Cognitive Effects See also References External links. White...
https://en.wikipedia.org/wiki/Hyperintensity
*  MRI - coronal T1 sequence - MR-TIP: Database
... M agnetic R esonance - T echnology I nformation P ortal Welcome to MRI Technology. Database. Forum. Market. News. Resources. Contact. Info Sheets. Artifacts. Coils. Contrast Agents. Devices. MRI Safety. Sequences. Images. Sliders. Abbreviations. Acronyms. Protocols. Patient Information. Out- side. Congresses. Resources. See a comprehensive list of contrast agents. From Abdoscan® to Teslascan®. 'coronal T1 sequence'. SEARCH FOR. search it again coronal T1 sequ... 2 3. 5. A. B. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. Result : Searchterm ' coronal T1 sequence ' found in 0 term and 0 definition, + 2 Boolean[ ] results. 1 - 2 of 2 Result Pages :. MRI Resources. IR - Shoulder MRI - Contrast Enhanced MRI - Pediatric and Fetal MRI - Abdominal Imaging - Services and Supplies. Knee MRI. Knee MRI, with its high soft tissue contrast is one of the main imaging tools to depict knee joint pathology. MRI allows accurate imaging of intra-articular structures such as ligaments, cartilage, m...
http://mr-tip.com/serv1.php?type=db1&dbs=coronal T1 sequence
*  Magnetic resonance spectroscopic imaging
... mrsi is a noninvasive imaging method that provides spectroscopic information in addition to the image that is generated by mri alone whereas traditional magnetic resonance imaging mri generates a black and white image in which brightness is determined primarily by the t or t relaxation times of the tissue being imaged the spectroscopic information obtained in an mrsi study can be used to infer further information about cellular activity metabolic information for example in the context of oncology an mri scan may reveal the shape and size of a tumor while an mrsi study provides additional information about the metabolic activity occurring in the tumor mrsi can be performed on a standard mri scanner and the patient experience is the same for mrsi as for mri mrsi has broad applications in medicine including oncology and general physiological studies when hydrogen is the target element mrsi is also called h nuclear magnetic resonance spectroscopic imaging and proton magnetic resonance spectroscopic imaging m...
https://en.wikipedia.org/wiki/Magnetic_resonance_spectroscopic_imaging
*  Re: TESLA - MECH RESONANCE (discover this classic)
Re: TESLA - MECH RESONANCE discover this classic. Go to: Forum List Message List New Topic Search Log In Print View Re: TESLA - MECH RESONANCE discover this classic Posted by:. Date: February 25, 2014 12:21PM. That's true. I saw that tour--the infamous 'in the round' Hysteria tour. Tesla was pure raw energy. They ran over The Leps. Even with that huge stage production and light show. Thing is... I saw Tesla headline next time and they were so hung over from the night before,the show was pretty lackluster. Seems they were all on the Skeoch party train at that time. but at least they learned as time went on what he didn't/couldn't. T Navigate: Previous Message Next Message Options: Reply Quote. TESLA - MECH RESONANCE discover this classic. bmg. Re: TESLA - MECH RESONANCE discover this classic. Re: TESLA - MECH RESONANCE discover this classic. bridgeofsighs. Re: TESLA - MECH RESONANCE discover this classic. Re: TESLA - MECH RESONANCE discover this classic. Re: TESLA - MECH RESONANCE discover this classic. Re: TE...
http://melodicrock.com/phorum52/read.php?1,968632,968771
*  Magnetic Resonance Imaging (MRI) - Lompoc Valley Medical Center
Magnetic Resonance Imaging MRI - Lompoc Valley Medical Center. Champion Center. Comprehensive Care. Patient Services. Champion Center. Comprehensive Care Center. AllCare Services. Outpatient Imaging Center. Sleep Disorder Center. Lompoc Hospital. Medical Surgical Services. Rehabilitation Services. Medical Services. Magnetic Resonance Imaging MRI. Magnetic Resonance Imaging MRI About the procedure Magnetic Resonance Imaging is a non-invasive procedure and is used to discover what kind of tissue exists in a given area of the body. Magnetic Resonance Imaging at Lompoc Valley Medical Center Here at the Lompoc Valley Medical Center, we have the ability to do the full range of MRI exams including Magnetic Resonance Angiography, the imaging of blood vessels. The Lompoc Valley Medical Center board of directors approved the purchase of a 2nd MRI system which will be located at an out-patient facility. Some of the things an MRI can be used for include: Diagnosing multiple sclerosis MS Diagnosing tumors of the pituitary...
http://lompocvmc.com/council/photos/image/4-dsc-0013
*  Erwin L. Hahn Institute for Magnetic Resonance Imaging
erwin l hahn institute for magnetic resonance imaging erwin l hahn institute for magnetic resonance imaging the erwin l hahn institute for magnetic resonance imaging is a research institute which develops magnetic resonance imaging mri for both cognitive neuroscience and medical diagnosis and treatment history it was founded in july by the university duisburg essen germany and the radboud university nijmegen the netherlands it is located on the grounds of the unesco world cultural heritage zollverein in the northeast of the city of essen germany the industrial complex zollverein is a former coal mine and coke processing plant which represents an industry which dominated the industrialization of the ruhr area in germany during the th and th centuries the institute is named after erwin l hahn a physicist who has made innumerable contributions to the field of magnetic resonance the centerpiece of the institute is a tesla whole body magnet resonance imager from siemens healthcare erlangen germany in contrast to t...
https://en.wikipedia.org/wiki/Erwin_L._Hahn_Institute_for_Magnetic_Resonance_Imaging
*  PLOS Biology: Causal Modelling and Brain Connectivity in Functional Magnetic Resonance Imaging
... Advertisement. plos.org. create account. sign in. Search Search. advanced search. Browse. Current Issue. Journal Archive. Collections. Submissions. Getting Started. Presubmission Inquiries. Submission Guidelines. Figures. Tables. Other Article Types. Revising Your Manuscript. Submit Now. Best Practices in Research Reporting. Human Subjects Research. Content License. Data Availability. Materials and Software Sharing. Ethical Publishing Practice. Manuscript Review and Publication. Editorial and Peer Review Process. Reviewer Guidelines. Accepted Manuscripts. Corrections and Retractions. Comments. Article-Level Metrics. Submit Your Manuscript PLOS Biology provides an Open Access platform to showcase your best research and commentary across all areas of biological science. Get Started. About. Journal Information. Editorial Board. Publishing Information. Publication Fees. Press and Media. Contact. Open Access. Primer. Primer Primers provide a concise introduction into an important aspect of biology highlighted...
http://plosbiology.org/article/comments/info:doi/10.1371/journal.pbio.1000033
*  Virtual electrophysiological study in a 3-dimensional cardiac magnetic resonance imaging model of po
... rcine myocardial infarction. BioMedSearch. Home. Advanced Search. Tools. Search Tutorial. Login. Create Free Account. Document Detail. Virtual electrophysiological study in a 3-dimensional cardiac magnetic resonance imaging model of porcine myocardial infarction. MedLine Citation:. PMID: 22633654 Owner: NLM Status: MEDLINE. Abstract/OtherAbstract:. OBJECTIVES: This study sought to test the hypothesis that "virtual" electrophysiological studies EPS on an anatomic platform generated by 3-dimensional magnetic resonance imaging reconstruction of the left ventricle can reproduce the reentrant circuits of induced ventricular tachycardia VT in a porcine model of myocardial infarction. BACKGROUND: Delayed-enhancement magnetic resonance imaging has been used to characterize myocardial infarction and "gray zones," which are thought to reflect heterogeneous regions of viable and nonviable myocytes. METHODS: Myocardial infarction by coronary artery occlusion was induced in 8 pigs. After a recovery period, 3-dimension...
http://biomedsearch.com/nih/Virtual-Electrophysiological-Study-in-3/22633654.html
*  Magnetic resonance neurography
... right|thumb|Bilateral Split Sciatic Nerve 'Magnetic resonance neurography MRN ' is the direct imaging of nerve s in the body by optimizing selectivity for unique MRI water properties of nerves. This technique yields a detailed image of a nerve from the resonance signal that arises from in the nerve itself rather than from surrounding tissues or from fat in the nerve lining. Standard magnetic resonance images can show the outline of some nerves in portions of their courses but do not show the intrinsic signal from nerve water. piriformis syndrome, the brachial plexus nerves e.g. A related technique for imaging neural tracts in the brain and spinal cord is called magnetic resonance tractography or diffusion tensor imaging. Magnetic resonance imaging MRI is based on differences in the physical properties of proton s in water molecules in different tissues in the body. The initial pure nerve image served as the basis of image processing techniques leading to discovery of a series of other MRI pulse sequence ...
https://en.wikipedia.org/wiki/Magnetic_resonance_neurography
*  Program in Cardiovascular Magnetic Resonance
... Martinos Center:. Program in Cardiovascular Magnetic Resonance. Mission. Research Initiatives. People. Contact. People. Investigators. Jerry Ackerman, Ph.D. NMR spectroscopy, intravascular coil design. George Dai, Ph.D. Small animal imaging, pulse sequence development, RF coils. Christian Farrar, Ph.D. Molecular imaging, MR microscopy, NMR Spectroscopy, intravascular coils. Brigitte Poncelet, Ph.D. Myocardial perfusion and metabolism, pulse sequence development. Timothy Reese, Ph.D. Myocardial mechanics, pulse sequence development, high field imaging. Bruce Rosen, M.D., Ph.D. Director, Martinos Center for Biomedical Imaging. Development of novel techniques and indications for cardiovascular MRI. Myocarial perfusion, magnetic susceptibility/BOLD imaging, small animal imaging. Ravi Seethamraju, Ph.D. Siemens Medical. Molecular imaging, myocardial perfusion, image analysis tools, software development. Director, Program in Cardiovascular Magnetic Resonance, Martinos Center for Biomedical Imaging. Small anima...
http://nmr.mgh.harvard.edu/cardiovasc/People.htm
*  MRI results explanation - NeuroTalk Support Groups
MRI results explanation I recently had a cervical MRI due to increased pain and numbness in my left arm. 1 C3-4:broad 4mm osteophyte disc protrusion complex with mild central canal stenosis, mild bilateral neural foraminal narrowing and a 2mm retrolisthesis. 2 C4-5: broad 3mm osteophyte disc protrusion complex with mild central canal stenosis, mild right neural foraminal narrowing and moderate left neural foraminal narrowing. 3 C5-6 broad 4 mm osteophyte disc protrusion complex with mild central canal stenosis, moderate bilateral neural foraminal narrowing and a 2mm retrolisthesis. 4 C6-7: broad 3mm disc protrusion with borderline canal stenosis and mild bilateral neural foraminal narrowing. View Public Profile. Find More Posts by slyk. View Public Profile. View Public Profile. View Public Profile. View Public Profile. View Public Profile. Find More Posts by slyk. 1 C3-4:broad 4mm osteophyte disc protrusion complex with mild central canal stenosis, mild bilateral neural foraminal narrowing and a 2mm retrolist...
http://neurotalk.psychcentral.com/thread54974.html
*  Lingual gyrus
... The 'lingual gyrus' is a brain structure that is linked to processing vision, especially related to letters. Role in word processing. Lingual and fusiform gyri in visual processing: a clinico-pathologic study of superior altitudinal hemianopia. Lingual gyrus activation has been linked to encoding of complex images. Subjects were tasked with memorizing the images for recognition at a later date. FMRI of visual encoding: reproducibility of activation. Hum Brain Mapp, 9 3, 156-164. Activation of lingual gyrus has been shown in selective visual attention studies. In some subjects, the lingual gyrus was activated. Hum Brain Mapp, 6 5-6, 383-389. doi: 10.1016/s0960-9822 00 00740-5. Role in word processing. Differential effects of word length and visual contrast in the fusiform and lingual gyri during reading. Studies have implied the lingual gyrus is involved with modulating visual stimuli especially letters, but is not related to whether or not the stimulus was a word. Furthermore, the gyrus has shown signifi...
https://en.wikipedia.org/wiki/Lingual_gyrus
*  Cardiac magnetic resonance imaging perfusion
... Contrast appears in the right ventricle then left ventricle before blushing into the muscle, which is normal top and abnormal bottom, an inferior perfusion defect. 'Cardiac magnetic resonance imaging perfusion' 'cardiac MRI perfusion', 'CMRI perfusion', also known as 'stress CMR perfusion',. 1 is a clinical magnetic resonance imaging test performed on patients with known or suspected coronary artery disease to determine if there are perfusion defects in the myocardium of the left ventricle that are caused by narrowing of one or more of the coronary arteries. CMR perfusion is increasingly used in cardiac imaging to test for inducible myocardial ischaemia and has been well validated against other imaging modalities such as invasive angiography. To screen patients who have chest pain and risk factors for coronary artery disease, to assess for ischaemia which may be caused by a narrowing in one of the coronary arteries. This could then if it shows ischaemia be further investigated with an other imaging modal...
https://en.wikipedia.org/wiki/Cardiac_magnetic_resonance_imaging_perfusion
*  .. Prior Diagnosed With Strain….MRI Results Are In .. Quote of the Day
prior diagnosed with strain mri results are in march pm by neil leave a comment updated pm c s t prior will be shut down for days according to a report from the chicago tribune mark prior has been diagnosed with a strain in his right shoulder here is the entire report from paul sullivan released a short while ago mesa ariz cubs pitcher mark prior was diagnosed with a strain in his right shoulder after an exam by dr lewis yocum the cubs said thursday prior delayed his mri exam until later in the day but the cubs were optimistic that no damage was found in the shoulder during the physical exam prior is unlikely to start the season in the rotation and the cubs will meet with yocum on saturday on how to proceed with prior s rehab check back for updates this seems to be positive news update according to a report on cubs com the mri results have been released here is the diagnosis an mri arthrogram of mark prior s right shoulder showed the chicago cubs pitcher has a moderate strain to his subscapularis and he will ...
http://chicagocubsonline.com/archives/2006/03/prior_injury.php
*  Statistical parametric mapping
... 'Statistical parametric mapping' or 'SPM' is a statistical technique created by Karl Friston for examining differences in brain activity recorded during functional neuroimaging experiments using neuroimaging technologies such as fMRI or PET. It may also refer to a specific piece of software created by the 'Wellcome Department of Imaging Neuroscience' part of University College London to carry out such analyses. The statistical parametric mapping approach Unit of measurement. The statistical parametric mapping approach. Functional neuroimaging, one type of 'brain scanning', involves the measurement of brain activity. An experimental approach to this problem might involve asking the question 'which areas of the brain are significantly more active when a person is doing task A compared to task B?'. To account for the motion of the head between scans, the images will usually be adjusted so each of the voxels in the images corresponds approximately to the same site in the brain. Parametric statistical models ...
https://en.wikipedia.org/wiki/Statistical_parametric_mapping
*  Magnetic Resonance Imaging (MRI) of the Breast | NorthShore Magnetic Resonance Imaging (MRI) of
Magnetic Resonance Imaging MRI of the Breast. Site Map. Previous Page En Español Magnetic Resonance Imaging MRI of the Breast. How It Feels. What Affects the Test. Magnetic Resonance Imaging MRI of the Breast Skip to the navigation. Test Overview Magnetic resonance imaging MRI uses a magnetic field and pulses of radio waves to make pictures of the breast. MRI may show problems in the breast that cannot be seen on a mammogram, ultrasound, or CT scan. makes pictures that show your breast's normal structure; tissue damage or disease, such as infection; inflammation; or a lump. In most cases, a dye contrast material may be used so that abnormalities can be seen more clearly from normal breast tissue. The contrast material makes it easier to find problems with increased or abnormal blood flow, such as with some types of cancer or areas of inflammation. Why It Is Done An MRI of the breast is done to: Find breast cancer. Breast MRI may be done when a mammogram or breast ultrasound scan cannot tell if a lump is cance...
http://northshore.org/healthresources/encyclopedia/encyclopedia.aspx?DocumentHwid=tw9801
*  Magnetic Resonance Imaging of the Abdomen: Applications in the Oncology Patient | Cancer Network
Magnetic Resonance Imaging of the Abdomen: Applications in the Oncology Patient. Cancer Network. Magnetic Resonance Imaging of the Abdomen: Applications in the Oncology Patient. Magnetic Resonance Imaging of the Abdomen: Applications in the Oncology Patient. Compared to helical computed tomography CT , magnetic resonance imaging MRI of the abdomen and pelvis offers important advantages, including superior soft-tissue contrast. Most liver masses are easily depicted on unenhanced T1-weighted or T2-weighted MRIs Figure 3. Semelka et al compared single-phase helical CT and MRI with fat suppressed T2-weighted and gadolinium-enhanced SPGR in 89 patients with focal liver masses. In 49% of patients, MRI detected more lesions than did helical CT, with MRI depicting 519 true-positive liver masses vs 295 lesions depicted with helical CT. Thus, on arterial phase images, hypervascular metastases will show marked enhancement against a background of minimally enhancing liver parenchyma Figure 5. Hypovascular Hepatic Metasta...
http://cancernetwork.com/review-article/magnetic-resonance-imaging-abdomen-applications-oncology-patient
*  Lilly and Incyte Announce Additional Phase IIb Baricitinib Data, Including MRI Results, in Patients
... with Rheumatoid Arthritis - Drugs.com MedNews. Lilly and Incyte Announce Additional Phase IIb Baricitinib Data, Including MRI Results, in Patients with Rheumatoid Arthritis. 13, 2012 /PRNewswire/ -- Eli Lilly and Company NYSE: LLY and Incyte Corporation Nasdaq: INCY today announced 24-week results from the continuation of an ongoing Phase IIb study of baricitinib, an orally available janus kinase JAK inhibitor, in patients with moderate-to-severe rheumatoid arthritis RA who had an inadequate response to treatment with methotrexate. Patients taking baricitinib 4 mg or 8 mg once daily reported significant differences in ACR20, ACR50 and ACR70 responses compared with patients taking placebo. Data from the 12- to 24-week portion of the study, which did not include a placebo control, showed that patients who continued to receive 2 mg, 4 mg or 8 mg baricitinib once daily doses maintained or improved ACR20, ACR50 and ACR70 responses. The following chart defines the percentage of patients that achieved ACR20, AC...
http://drugs.com/clinical_trials/lilly-incyte-announce-additional-phase-iib-baricitinib-data-including-mri-results-patients-14717.html
*  About Magnetic Resonance Imaging
... medical imaging and radiation therapeutics magnetic resonance imaging about magnetic resonance imaging menu contacting slu getting to slu about slu applying to slu around campus athletics social media slu tools make a gift slu news search about magnetic resonance imaging what is magnetic resonance imaging magnetic resonance imaging procedures use a large magnet and radio waves to create clear pictures of internal body structures mri provides excellent contrast between the different soft tissues of the body and is especially useful in imaging the brain spine joints muscles and other structures the images produced in mri are of higher resolution compared with other medical imaging techniques therefore allowing medical professionals to identify where physiological problems occur in the body what is an mri technologist a mri technologist is primarily responsible for using mri equipment to scan and capture images to aid in patient diagnosis mri technologists are educated and trained to work with patients to o...
http://slu.edu/medical-imaging-and-radiation-therapeutics/magnetic-resonance-imaging/about-magnetic-resonance-imaging?site=mobile
*  T2 Hyperintense Lesion Liver - Doctor answers on HealthTap
... Sign up free. Share. Download free app. Sign up free. Ask now. Rated 5.0/5 based on 10 votes. Top 10. Doctor insights on: T2 Hyperintense Lesion Liver. Share. Share. Follow @HealthTap. / Embed. Dr. Eric Kelts. Board Certified, Neurology. 19 years in practice. 337K people helped. 1 1 My brain MRI showed multiple T2/flair hyperintense foci more numerous than expected for my age 39 Should I consult a neurologist. Yes: yes I would consult a neurologist. Get a more detailed answer. Dr. Dennis Higginbotham. Board Certified. 24 years in practice. 49M people helped. Get help from a real doctor now. Continue. Dr. Andrew Seibert. 1 doctor shared a insight. Liver Definition. This organ plays a major role in metabolism and has a number of functions in the body, including glycogen storage, decomposition of red blood cells, plasma protein synthesis, hormone production, and detoxification. It lies below the diaphragm in the abdominal-pelvic region of the abdomen. It produces bile, an alkaline compound which aids in dig...
https://healthtap.com/topics/t2-hyperintense-lesion-liver
*  Spin echo
Image:HahnEcho GWM.gif In magnetic resonance, a 'spin echo' is the refocusing of spin magnetisation by a pulse of resonant electromagnetic radiation. 1 Modern nuclear magnetic resonance NMR and magnetic resonance imaging make use of this effect. The NMR signal observed following an initial excitation pulse decays with time due to both spin relaxation and any 'inhomogeneous' effects which cause different spins in the sample to precess at different rates. If the inversion pulse is applied after a period 't' of dephasing, the inhomogeneous evolution will rephase to form an 'echo' at time '2t'. Echo phenomena are important features of coherent spectroscopy which have been used in fields other than magnetic resonance including laser spectroscopy 3 and neutron scattering. Echoes were first detected in nuclear magnetic resonance by Erwin Hahn in 1950 4. In nuclear magnetic resonance and magnetic resonance imaging, radiofrequency radiation is most commonly used. Principle Spin echo decay Stimulated echo Photon echo S...
https://en.wikipedia.org/wiki/Spin_echo
*  Strain–encoded magnetic resonance imaging
strain encoded magnetic resonance imaging strain encoded magnetic resonance imaging strain encoded magnetic resonance imaging senc mri is a magnetic resonance imaging a technique for imaging the strain of deforming tissue it is undergoing testing to diagnose some heart diseases particularly congenital right ventricle dysfunctions which are difficult to diagnose it is an improvement on magnetic resonance elastography in that it has a faster imaging time and less post processing time to turn the acquired data into a useful image to use the technique the gradient coils in the mri equipment need to be driven with special pulse sequence s designed for specific tissues that tags deformation of the tissue such that tissue that deforms more is brighter or darker as needed using a baseline measurement of normal deformation the measurements can show unusual amounts of pressure a tissue is exposed to or indicate that the tissue is unusually stiff or flexible in either case potentially revealing a pathology inventors of ...
https://en.wikipedia.org/wiki/Strain–encoded_magnetic_resonance_imaging
*  Voxel-based morphometry to discriminate early Alzheimer's disease from controls - ResearchGate
ABSTRACT We assessed the accuracy of voxel-based morphometry VBM using a three-dimensional T1-weighted MRI in discriminating Alzheimer's disease AD in the very early stage of amnestic type of mild cognitive impairment and age-matched healthy controls. The first group comprising 30 AD patients and 41 controls was used to identify the area with the most significant gray matter loss in patients compared to normal controls based on the voxel-based analysis of a group comparison. The first group comprising 30 AD patients and 41 controls was used to identify the area with the most significant gray matter loss in patients compared to normal controls based on the voxel-based analysis of a group comparison. Receiver operating characteristic curves for a Z-score in the bilateral medial temporal areas including the entorhinal cortex with the most significant loss in the first group showed a high discrimination accuracy of 87.8%. / Neuroscience Letters 382 2005 269–274 271 of the 41 healthy volunteers using voxel-by-voxe...
http://researchgate.net/publication/7817096_Voxel-based_morphometry_to_discriminate_early_Alzheimer's_disease_from_controls
*  The influence of parental history of Alzheimer's disease and apolipoprotein E ε4 on the BOLD signal
A Journal of Neurology. The purpose of the current study was to more completely investigate how Alzheimer's disease risk factors affect the fMRI BOLD signal while accounting for task performance. All participants were cognitively normal and were free from drugs that may affect cognitive function. For both types of faces, we found main effects of APOE4 in the left anterior cingulate gyrus where the −APOE4 group showed significantly stronger responses than +APEO4 group when viewing PV Fig. These regions showed stronger responses in the −FH group compared to the +FH to PV faces Fig. In response to NV faces, the −FH group showed stronger response than +FH group in the left medial superior frontal gyrus, t 68 = 3.80, P 0.0001, left cuneus, t 68 = 3.19, P 0.001, right fusiform gyrus, t 68 = 3.36, P 0.001 and right superior temporal lobe, t 68 = 3.50, P 0.0001 Fig. There were no regions where +FH or +APOE4 had larger BOLD responses than the negative risk groups. 2 In a 2 × 2 ANCOVA analysis, the APOE4, FH and their ...
http://brain.oxfordjournals.org/content/132/2/383.long
*  specific brain functions: Topics by Science.gov
2010-02-01 The use of functional magnetic resonance imaging fMRI to measure functional connectivity among brain areas has the potential to identify neural networks associated with particular cognitive processes. Subtraction of the coherency magnitude and phase differences for the two conditions removes sources of correlated BOLD signals that do not modulate as a function of cognitive task, resulting in a more direct measure of functional connectivity associated with changes in neuronal activity. PMID:22137677 Electrical brain stimulation improves cognitive performance by modulating functional connectivity and task- specific activation. PMID:25820289 Isolating human brain functional connectivity associated with a specific cognitive process E-print Network Robertson, Lynn. PMID:25863137 Functional Brain Imaging PubMed Central. PMID:18406628 Organization, development and function of complex brain networks Microsoft Academic Search Olaf Sporns; Dante R. PubMed Takao, H; Hayashi, N; Ohtomo, K 2015-08-20 The human ...
http://science.gov/topicpages/s/specific brain functions.html
*  Brodmann area 44
... 'Brodmann area 44', or BA44, is part of the frontal cortex in the human brain. Situated just anterior to premotor cortex BA6 and on the lateral surface, inferior to BA9. This area is also known as 'pars opercularis of the inferior frontal gyrus ', and it refers to a subdivision of the cytoarchitecturally defined frontal region of cerebral cortex. In the human it corresponds approximately to the opercular part of inferior frontal gyrus H. Thus, it is bounded caudally by the inferior precentral sulcus H and rostrally by the anterior ascending limb of lateral sulcus H. It surrounds the diagonal sulcus H. In the depth of the lateral sulcus it borders on the insula. Cytoarchitectonically it is bounded caudally and dorsally by the agranular frontal area 6, dorsally by the granular frontal area 9 and rostrally by the triangular area 45 Brodmann-1909. Functions Trivia Image See also Notes and references External links. Functions. Together with left-hemisphere BA 45, the left hemisphere In 95.5% of right-handers ...
https://en.wikipedia.org/wiki/Brodmann_area_44
*  Data acquisition in functional MRI
White papers Search by topic to download case studies and white papers. To cope with the constraints of temporal resolution and T2* sensitivity, functional MRI sequences are generally of the ultrafast echo planar type GE-EPI, with small matrixes and thus weaker spatial resolution. Acquisitions need to be repeated in time, for different activation tasks, in order to conduct a statistically correlated comparative study of the signal variations measured in each pixel and variations in task. Differences in activation will thus relate to the difference between the two tasks. For instance, for motor activities, rest could be the reference activity, and repeated finger movements, the activity., the protocols are more complex and the design of relevant tasks more subtle. It is also possible to simultaneously record data on patient responses during the examination frequency of movements, stimulus-response time, correct or incorrect response... The local hemodynamic response is thus evaluated for the different activiti...
https://imaios.com/cn/e-Courses/e-MRI/Functional-MRI/functional-mri-acquisition
*  Quantity, not just quality, in new Stanford brain scan method
... Researchers used magnetic resonance imaging to quantify brain tissue volume, a critical measurement of the progression of multiple sclerosis and other diseases. A Stanford team has developed a new method for quantitatively measuring human brain tissue using MRI. But a potent and popular diagnostic scan, magnetic resonance imaging MRI, provides mostly qualitative information. An interdisciplinary Stanford team has now developed a new method for quantitatively measuring human brain tissue using MRI. Their method may change the way doctors diagnose and treat neurological diseases such as multiple sclerosis. In theory, he read, magnetic resonance could quantitatively discriminate between different types of tissues. Each voxel represents the signal from a small volume of the brain, much like a pixel represents a small volume of an image. Mezer found that his MRI method produced MTV values in agreement with measurements that, until now, could only come from post-mortem brain specimens. The team applied its met...
http://news.stanford.edu/news/2013/november/better-brain-scan-110413.html
*  Increased blood flow detected by fMRI scans?
increased blood flow detected by fmri scans increased blood flow detected by fmri scans mark d morin mdmpsyd at peterhood gwi net fri oct est previous message increased blood flow detected by fmri scans next message increased blood flow detected by fmri scans messages sorted by andrew gyles wrote blood oxygen level dependent functional magnetic resonance imaging bold fmri scans show active regions of the brain it has been assumed that the excess of oxygen detected in an active region is brought there by increased blood flow has this assumption of increased blood flow been proved correct by experiment andrew gyles experiments don t prove any hypothesis they simply support or reject the hypothesis do you have an alternative hypothesis that could be tested love is a fruit in season at all times and within reach of every hand mother teresa http home gwi net mdmpsyd index htm for mail remove peterhood previous message increased blood flow detected by fmri scans next message increased blood flow detected by fmri sc...
http://bio.net/bionet/mm/neur-sci/2001-October/047081.html

HyperintensitySpin–lattice relaxation in the rotating frame: Spin–lattice relaxation in the rotating frame is the mechanism by which Mxy, the transverse component of the magnetization vector, exponentially decays towards its equilibrium value of zero, under the influence of a radio frequency (RF) field in nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). It is characterized by the spin–lattice relaxation time constant in the rotating frame, T1ρ.Cine Capari: The Cine Capari is a domesticated breed of sheep originating from Aydin Province in Turkey. In 1998, there were 300 Cine Capari and the population was decreasing.Schering AGRadC RNA motif: The radC RNA motif is a conserved RNA structure identified by bioinformatics. The radC RNA motif is found in certain bacteria where it is consistent located in the presumed 5' untranslated regions of genes whose encoded proteins bind DNA are interact with other proteins that bind DNA.GadodiamideSHIFTCORGadolinium(III) chlorideImage fusion: In computer vision, Multisensor Image fusion is the process of combining relevant information from two or more images into a single image.Haghighat, M.Acoustic resonance technology: Acoustic resonance technology is an acoustic inspection technology developed by Det Norske Veritas over the past 20 years. ART exploits the phenomenon of half-wave resonance, whereby a suitably excited resonant target (such as a pipeline wall) exhibits longitudinal resonances at certain frequencies characteristic of the target's thickness.Zero field splitting: Zero field splitting describes various interactions of the energy levels of an electron spin (S>1/2) even in the absence of an applied magnetic field. It is important in the electron spin resonance of biological molecules.Volume rendering: 250px|thumb| A volume rendered cadaver head using view-aligned [[texture mapping and diffuse reflection]]Generalizability theory: Generalizability theory, or G Theory, is a statistical framework for conceptualizing, investigating, and designing reliable observations. It is used to determine the reliability (i.Single-molecule FRET: Single molecule fluorescence resonance energy transfer (or smFRET) is a biophysical technique used to measure distances at the 1-10 nanometer scale in single molecules, typically biomolecules. It is an application of FRET wherein a single donor and acceptor FRET pairs are excited and detected.Assay sensitivity: Assay sensitivity is a property of a clinical trial defined as the ability of a trial to distinguish an effective treatment from a less effective or ineffective intervention. Without assay sensitivity, a trial is not internally valid and is not capable of comparing the efficacy of two interventions.Dense artery sign: In medicine, the dense artery sign or hyperdense artery sign is a radiologic sign seen on computer tomography (CT) scans suggestive of early ischemic stroke. In earlier studies of medical imaging in patients with strokes, it was the earliest sign of ischemic stroke in a significant minority of cases.Proton emissionArteriovenous oxygen difference: The arteriovenous oxygen difference, or a-vO2 diff, is the difference in the oxygen content of the blood between the arterial blood and the venous blood. It is an indication of how much oxygen is removed from the blood in capillaries as the blood circulates in the body.Creatine supplements: Creatine supplements are athletic aids used to increase high-intensity athletic performance. Researchers have known of the use of creatine as an energy source by skeletal muscles since the middle of the 20th century.PhosphocreatineCerebral hemisphere: The vertebrate cerebrum (brain) is formed by two cerebral hemispheres that are separated by a groove, the medial longitudinal fissure. The brain can thus be described as being divided into left and right cerebral hemispheres.Temporal analysis of products: Temporal Analysis of Products (TAP), (TAP-2), (TAP-3) is an experimental technique for studyingMetallocene: A metallocene is a compound typically consisting of two cyclopentadienyl anions (Cp, which is C5H5−) bound to a metal center (M) in the oxidation state II, with the resulting general formula (C5H5)2M. Closely related to the metallocenes are the metallocene derivatives, e.TBR1: T-box, brain, 1 is a transcription factor protein important in vertebrate embryo development. It is encoded by the TBR1 gene.Clonal Selection Algorithm: In artificial immune systems, Clonal selection algorithms are a class of algorithms inspired by the clonal selection theory of acquired immunity that explains how B and T lymphocytes improve their response to antigens over time called affinity maturation. These algorithms focus on the Darwinian attributes of the theory where selection is inspired by the affinity of antigen-antibody interactions, reproduction is inspired by cell division, and variation is inspired by somatic hypermutation.Testicular atrophy: Testicular atrophy is a medical condition in which the male reproductive organs (the testes, which in humans are located in the scrotum) diminish in size and may be accompanied by loss of function. This does not refer to temporary changes, such as those brought on by cold.Middle frontal gyrus: The middle frontal gyrus makes up about one-third of the frontal lobe of the human brain. (A gyrus is one of the prominent "bumps" or "ridges" on the surface of the human brain.Brodmann area 38: Brodmann area 38, also BA38 or temporopolar area 38 (H), is part of the temporal cortex in the human brain. BA 38 is at the anterior end of the temporal lobe, known as the temporal pole.Neurooncology: Neuro-oncology is the study of brain and spinal cord neoplasms, many of which are (at least eventually) very dangerous and life-threatening (astrocytoma, glioma, glioblastoma multiforme, ependymoma, pontine glioma, and brain stem tumors are among the many examples of these). Among the malignant brain cancers, gliomas of the brainstem and pons, glioblastoma multiforme, and high-grade (highly anaplastic) astrocytoma are among the worst.Cingulate sulcus: The cingulate sulcus is a sulcus (brain fold) on the medial wall of the cerebral cortex. The frontal and parietal lobes are separated from the cingulate gyrus by the cingulate sulcus.EEGLAB: EEGLAB is a MATLAB toolbox distributed under the free GNU GPL license for processing data from electroencephalography (EEG), magnetoencephalography (MEG), and other electrophysiological signals. Along with all the basic processing tools, EEGLAB implements independent component analysis (ICA), time/frequency analysis, artifact rejection, and several modes of data visualization.Repeatable Battery for the Assessment of Neuropsychological Status: The Repeatable Battery for the Assessment of Neuropsychological Status is a neuropsychological assessment initially introduced in 1998. It consists of ten subtests which give five scores, one for each of the five domains tested (immediate memory, visuospatial/constructional, language, attention, delayed memory).Steptoean positive carbon isotope excursion: The Steptoean Positive Carbon Isotope Excursion (SPICE) was a geological event which occurred about 500 million years ago at the end of the Cambrian Period. The SPICE event was a sudden reversal of the anoxia (lack of oxygen) that had steadily spread throughout the oceans during the Cambrian which also affected the atmosphere.Imaging phantom: Phantom}}Carbon–fluorine bondPhosphorus deficiency: Phosphorus deficiency is a plant disorder associated with insufficient supply of phosphorus. Phosphorus refers here to salts of phosphates (PO43−), monohydrogen phosphate (HPO42−), and dihydrogen phosphate (H2PO4−).Site-directed spin labeling: Site-directed spin labeling (SDSL) is a technique for investigating the structure and local dynamics of proteins using electron spin resonance. The theory of SDSL is based on the specific reaction of spin labels with amino acids.Amorphosynthesis: Amorphosynthesis is a medical condition where the patient is unaware of somatic sensations from one side of the body; the left side is most commonly affected. This condition is usually a sign of a lesion in the right parietal lobe.Database of protein conformational diversity: The Database of protein conformational diversity (PCDB) is a database of diversity of protein tertiary structures within protein domains as determined by X-ray crystallography. Proteins are inherently flexible and this database collects information on this subject for use in molecular research.Feasibility Study (The Outer Limits): "Feasibility Study" is an episode of The Outer Limits television show. It was first broadcast on 11 July 1997, during the third season.Neutron magnetic moment: The neutron magnetic moment is the intrinsic magnetic dipole moment of the neutron, symbol μn. Protons and neutrons, both nucleons, comprise the nucleus of atoms, and both nucleons behave as small magnets whose strengths are measured by their magnetic moments.Cerebral blood flow: Cerebral blood flow (CBF) is the blood supply to the brain in a given period of time.Tolias C and Sgouros S.Raman microscope: The Raman microscope is a laser-based microscopic device used to perform Raman spectroscopy.Microscopical techniques in the use of the molecular optics laser examiner Raman microprobe, by M.Sodium ferric gluconate complexReaction coordinateAlkaliphile: Alkaliphiles are a class of extremophilic microbes capable of survival in alkaline (pH roughly 8.5-11) environments, growing optimally around a pH of 10.Myocytolysis: Myocytolysis refers to a degenerative change (often reversible) that occurs to myocytes upon myocardial strain. This phenomenon tends to occur when neighboring cardiac muscle loses its ability to contract (i.Brain positron emission tomography: Positron emission tomography (PET) measures emissions from radioactively labeled metabolically active chemicals that have been injected into the bloodstream. The emission data are computer-processed to produce multi-dimensional images of the distribution of the chemicals throughout the brain.Outline of water: The following outline is provided as an overview of and topical guide to water:Knee pain: Knee pain is a common complaint for many people. There are several factors that can cause knee pain.Deuterium NMR: Deuterium NMR is NMR spectroscopy of deuterium (2H or D), an isotope of hydrogen. Deuterium is an isotope with spin = 1, unlike hydrogen which is spin = 1/2.Discharge coefficient: In a nozzle or other constriction, the discharge coefficient (also known as coefficient of discharge) is the ratio of the actual discharge to the theoretical discharge,Sam Mannan, Frank P. Lee, Lee's Loss Prevention in the Process Industries: Hazard Identification, Assessment and Control, Volume 1, Elsevier Butterworth Heinemann, 2005.Nested case-control study: A nested case control (NCC) study is a variation of a case-control study in which only a subset of controls from the cohort are compared to the incident cases. In a case-cohort study, all incident cases in the cohort are compared to a random subset of participants who do not develop the disease of interest.Fluorescence anisotropy: Fluorescence anisotropy is the phenomenon where the light emitted by a fluorophore has unequal intensities along different axes of polarization. Early pioneers in the field include Aleksander Jablonski, Gregorio Weber,Weber, G.IlmeniteEnd-diastolic volume: In cardiovascular physiology, end-diastolic volume (EDV) is the volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole. Because greater EDVs cause greater distention of the ventricle, 'EDV is often used synonymously with preload, which refers to the length of the sarcomeres in cardiac muscle prior to contraction (systole).Proximity ligation assay: Proximity ligation assay (in situ PLA) is a technology that extends the capabilities of traditional immunoassays to include direct detection of proteins, protein interactions and modifications with high specificity and sensitivity. Protein targets can be readily detected and localized with single molecule resolution and objectively quantified in unmodified cells and tissues.Canine degenerative myelopathy: Canine degenerative myelopathy, also known as chronic degenerative radiculomyelopathy, is an incurable, progressive disease of the canine spinal cord that is similar in many ways to amyotrophic lateral sclerosis (ALS). Onset is typically after the age of 7 years and it is seen most frequently in the German shepherd dog, Pembroke Welsh corgi, and boxer dog, though the disorder is strongly associated with a gene mutation in SOD1 that has been found in 43 breeds as of 2008, including the wire fox terrier, Chesapeake Bay retriever, Rhodesian ridgeback, and Cardigan Welsh corgi.Isotopic signature: An isotopic signature (also isotopic fingerprint) is a ratio of non-radiogenic 'stable isotopes', stable radiogenic isotopes, or unstable radioactive isotopes of particular elements in an investigated material. The ratios of isotopes in a sample material are measured by isotope ratio mass spectrometry.

(1/44946) Visual perception: mind and brain see eye to eye.

Recent functional imaging studies have identified neural activity that is closely associated with the perception of illusory motion. The mapping of the mind onto the bin appears to be one-to-one: activity in visual 'motion area' MT is highly correlated with perceptual experience.  (+info)

(2/44946) Physiological characteristics of capacity constraints in working memory as revealed by functional MRI.

A fundamental characteristic of working memory is that its capacity to handle information is limited. While there have been many brain mapping studies of working memory, the physiological basis of its capacity limitation has not been explained. We identified characteristics of working memory capacity using functional magnetic resonance imaging (fMRI) in healthy subjects. Working memory capacity was studied using a parametric 'n-back' working memory task involving increasing cognitive load and ultimately decreasing task performance. Loci within dorsolateral prefrontal cortex (DLPFC) evinced exclusively an 'inverted-U' shaped neurophysiological response from lowest to highest load, consistent with a capacity-constrained response. Regions outside of DLPFC, in contrast, were more heterogeneous in response and often showed early plateau or continuously increasing responses, which did not reflect capacity constraints. However, sporadic loci, including in the premotor cortex, thalamus and superior parietal lobule, also demonstrated putative capacity-constrained responses, perhaps arising as an upstream effect of DLPFC limitations or as part of a broader network-wide capacity limitation. These results demonstrate that regionally specific nodes within the working memory network are capacity-constrained in the physiological domain, providing a missing link in current explorations of the capacity characteristics of working memory.  (+info)

(3/44946) Signal-, set- and movement-related activity in the human brain: an event-related fMRI study.

Electrophysiological studies on monkeys have been able to distinguish sensory and motor signals close in time by pseudorandomly delaying the cue that instructs the movement from the stimulus that triggers the movement. We have used a similar experimental design in functional magnetic resonance imaging (fMRI), scanning subjects while they performed a visuomotor conditional task with instructed delays. One of four shapes was presented briefly. Two shapes instructed the subjects to flex the index finger; the other two shapes coded the flexion of the middle finger. The subjects were told to perform the movement after a tone. We have exploited a novel use of event-related fMRI. By systematically varying the interval between the visual and acoustic stimuli, it has been possible to estimate the significance of the evoked haemodynamic response (EHR) to each of the stimuli, despite their temporal proximity in relation to the time constant of the EHR. Furthermore, by varying the phase between events and image acquisition, we have been able to achieve high temporal resolution while scanning the whole brain. We dissociated sensory and motor components of the sensorimotor transformations elicited by the task, and assessed sustained activity during the instructed delays. In calcarine and occipitotemporal cortex, the responses were exclusively associated with the visual instruction cues. In temporal auditory cortex and in primary motor cortex, they were exclusively associated with the auditory trigger stimulus. In ventral prefrontal cortex there were movement-related responses preceded by preparatory activity and by signal-related activity. Finally, responses associated with the instruction cue and with sustained activity during the delay period were observed in the dorsal premotor cortex and in the dorsal posterior parietal cortex. Where the association between a visual cue and the appropriate movement is arbitrary, the underlying visuomotor transformations are not achieved exclusively through frontoparietal interactions. Rather, these processes seem to rely on the ventral visual stream, the ventral prefrontal cortex and the anterior part of the dorsal premotor cortex.  (+info)

(4/44946) Transient and permanent deficits in motion perception after lesions of cortical areas MT and MST in the macaque monkey.

We examined the nature and the selectivity of the motion deficits produced by lesions of extrastriate areas MT and MST. Lesions were made by injecting ibotenic acid into the representation of the left visual field in two macaque monkeys. The monkeys discriminated two stimuli that differed either in stimulus direction or orientation. Direction and orientation discrimination were assessed by measuring thresholds with gratings and random-dots placed in the intact or lesioned visual fields. At the start of behavioral testing, we found pronounced, motion-specific deficits in thresholds for all types of moving stimuli, including pronounced elevations in contrast thresholds and in signal-to-noise thresholds measured with moving gratings, as well as deficits in direction range thresholds and motion coherence measured with random-dot stimuli. In addition, the accuracy of direction discrimination was reduced at smaller spatial displacements (i.e. step sizes), suggesting an increase in spatial scale of the residual directional mechanism. Subsequent improvements in thresholds were seen with all motion stimuli, as behavioral training progressed, and these improvements occurred only with extensive behavioral testing in the lesioned visual field. These improvements were particularly pronounced for stimuli not masked by noise. On the other hand, deficits in the ability to extract motion from noisy stimuli and in the accuracy of direction discrimination persisted despite extensive behavioral training. These results demonstrate the importance of areas MT and MST for the perception of motion direction, particularly in the presence of noise. In addition, they provide evidence for the importance of behavioral training for functional recovery after cortical lesions. The data also strongly support the idea of functional specialization of areas MT and MST for motion processing.  (+info)

(5/44946) Integrated visualization of functional and anatomic brain data: a validation study.

Two-dimensional SPECT display and three methods for integrated visualization of SPECT and MRI patient data are evaluated in a multiobserver study to determine whether localization of functional data can be improved by adding anatomical information to the display. METHODS: SPECT and MRI data of 30 patients were gathered and presented using four types of display: one of SPECT in isolation, two integrated two-dimensional displays and one integrated three-dimensional display. Cold and hot spots in the peripheral cortex were preselected and indicated on black-and-white hard copies of the image data. Nuclear medicine physicians were asked to assign the corresponding spots in the image data on the computer screen to a lobe and a gyrus and give a confidence rating for both localizations. Interobserver agreement using kappa statistics and average confidence ratings were assessed to interpret the reported observations. RESULTS: Both the interobserver agreement and the confidence of the observers were greater for the integrated two-dimensional displays than for the two-dimensional SPECT display. An additional increase in agreement and confidence was seen with the integrated three-dimensional display. CONCLUSION: Integrated display of SPECT and MR brain images provides better localization of cerebral blood perfusion abnormalities in the peripheral cortex in relation to the anatomy of the brain than single-modality display and increases the confidence of the observer.  (+info)

(6/44946) Anatomic validation of spatial normalization methods for PET.

Spatial normalization methods, which are indispensable for intersubject analysis in current PET studies, have been improved in many aspects. These methods have not necessarily been evaluated as anatomic normalization methods because PET images are functional images. However, in view of the close relation between brain function and morphology, it is very intriguing how precisely normalized brains coincide with each other. In this report, the anatomic precision of spatial normalization is validated with three different methods. METHODS: Four PET centers in Japan participated in this study. In each center, six normal subjects were recruited for both H2(15)O-PET and high-resolution MRI studies. Variations in the location of the anterior commissure (AC) and size and contours of the brain and the courses of major sulci were measured in spatially normalized MR images for each method. Spatial normalization was performed as follows. (a) Linear: The AC-posterior commissure and midsagittal plane were identified on MRI and the size of the brain was adjusted to the Talairach space in each axis using linear parameters. (b) Human brain atlas (HBA): Atlas structures were manually adjusted to MRI to determine linear and nonlinear transformation parameters and then MRI was transformed with the inverse of these parameters. (c) Statistical parametric mapping (SPM) 95: PET images were transformed into the template PET image with linear and nonlinear parameters in a least-squares manner. Then, coregistered MR images were transformed with the same parameters used for the PET transformation. RESULTS: The AC was well registered in all methods. The size of the brain normalized with SPM95 varied to a greater extent than with other approaches. Larger variance in contours was observed with the linear method. Only SPM95 showed significant superiority to the linear method when the courses of major sulci were compared. CONCLUSION: The results of this study indicate that SPM95 is as effective a spatial normalization as HBA, although it does not use anatomic images. Large variance in structures other than the AC and size of the brain in the linear method suggests the necessity of nonlinear transformations for effective spatial normalization. Operator dependency of HBA also must be considered.  (+info)

(7/44946) Genetic influences on cervical and lumbar disc degeneration: a magnetic resonance imaging study in twins.

OBJECTIVE: Degenerative intervertebral disc disease is common; however, the importance of genetic factors is unknown. This study sought to determine the extent of genetic influences on disc degeneration by classic twin study methods using magnetic resonance imaging (MRI). METHODS: We compared MRI features of degenerative disc disease in the cervical and lumbar spine of 172 monozygotic and 154 dizygotic twins (mean age 51.7 and 54.4, respectively) who were unselected for back pain or disc disease. An overall score for disc degeneration was calculated as the sum of the grades for disc height, bulge, osteophytosis, and signal intensity at each level. A "severe disease" score (excluding minor grades) and an "extent of disease" score (number of levels affected) were also calculated. RESULTS: For the overall score, heritability was 74% (95% confidence interval [95% CI] 64-81%) at the lumbar spine and 73% (95% CI 64-80%) at the cervical spine. For "severe disease," heritability was 64% and 79% at the lumbar and cervical spine, respectively, and for "extent of disease," heritability was 63% and 63%, respectively. These results were adjusted for age, weight, height, smoking, occupational manual work, and exercise. Examination of individual features revealed that disc height and bulge were highly heritable at both sites, and osteophytes were heritable in the lumbar spine. CONCLUSION: These results suggest an important genetic influence on variation in intervertebral disc degeneration. However, variation in disc signal is largely influenced by environmental factors shared by twins. The use of MRI scans to determine the phenotype in family and population studies should allow a better understanding of disease mechanisms and the identification of the genes involved.  (+info)

(8/44946) The effect of face inversion on activity in human neural systems for face and object perception.

The differential effect of stimulus inversion on face and object recognition suggests that inverted faces are processed by mechanisms for the perception of other objects rather than by face perception mechanisms. We investigated the face inversion using functional magnetic resonance imaging (fMRI). The principal effect of face inversion on was an increased response in ventral extrastriate regions that respond preferentially to another class of objects (houses). In contrast, house inversion did not produce a similar change in face-selective regions. Moreover, stimulus inversion had equivalent, minimal effects for faces in in face-selective regions and for houses in house-selective regions. The results suggest that the failure of face perception systems with inverted faces leads to the recruitment of processing resources in object perception systems, but this failure is not reflected by altered activity in face perception systems.  (+info)


Can Magnetic Resonance Imaging cause brain tumors as electromagnetic radiation is now thought to cause cancer?


Irresponsible journalism. If you had four brain MRI's every year for 25 years your risk factor would only increase by 5%.


After having your MRI(Magnetic Resonance Imaging) how long more it will take for PT treatment?Thank you?


i have my PT treatment for almost 4 months, then now i had my MRI last week. So after the doctor read my MRI result and found out okay, how long more i need for PT treatment? thank you
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There is no answer to this that anyone here can give you.
Only your doctor can tell you when it's okay to stop Physical Therapy.

Remember: getting an MRI is not a treatment, it is an internal picture and in no way treats anything, it is meant for diagnosis.


Tattoos and Magnetic Resonance Imaging ?


I just read an article that says you can't have M.R.I if you have a tattoo . Now i'm interested in what M.R.I is used for ? is it just an x-ray , but without the radiation ?
Thanks for the info :)
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There was an episode of Mythbusters that tested this.  They found no risks to your skin or tattoo from the MRI.  Check the discovery channel's website to see if the episode is available online.


"MRI"(Magnetic Resonance Imaging)~top urgent?


Hello there,
I am going to do"MRI"(Magnetic Resonance Imaging) next Wed and I wonder if I can have a diagnosis at once.
Please answer me if you know. Many thanks.
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It's slightly possible if a Radiologist is on-site and reads your chart and has permission.
The issue though is a MRI is a lot of data.  In many cases, you may have a Radiologist look over the chart for anything that "sticks out", but for legal purposes and liability reasons, you will not get a diagnosis.
What will happen, is the MRI tech will take the MRI, and look it over to make sure all the slices are clear and good.  He/She will then forward the MRI data to a doctor who specializes in Radiology and possibly, the area you're having the MRI focused on.  Then, that doctor will forward to the originating doctor the results they see, and your doctor (who ordered the MRI) will take the Radiologist's notes into reasoning what the MRI shows.
It's a slow process, but it is for good reason.  Nobody wants to rush a diagnosis, nor do they want to overlook something and have to run you thru another MRI.
Patience :]  I've had several MRI's as well as a few orthopedic surgeries, and by all means I'd rather wait for a good diagnosis than rush it.  I hope the results you get are good.


"MRI(Magnetic Resonance Imaging )"?


Hello there,
I will have a "MRI(Magnetic Resonance Imaging )" check next Wed and I wonder if I can receive an analysis report at once.
Please answer me if you know. Thank you very much!
I mean I am going to do "MRI" and I wonder if I can recieve a diagnosis at once!Please answer me if you know! thanks.
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When I get MRIs, which I do quite regularly, I always have to wait.


can a person keep his dentures(fixed)on while going for mri( Magnetic resonance imaging)?


will it cause any problem?
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It depends on which exam is being done.  For MRI imaging of the brain or neck, dentures absolutely should be removed.  For imaging of the lower back or the knee, dentures can be left in for the exam.


What are the pros and cons of MRI (Magnetic Resonance Imaging)?


Curious.
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The pros are you get a nice picture of what's going on in your body as a diagnostic tool. The cons are if you have certain metals in your body or are wearing jewelry attracted by magnets it will make you have a very bad day.


Help ! Magnetic resonance imaging for 9 months old girl because mild motor delay?


My 9 months old girl was today seen by her pediatrician and he scheduled for us MRI of a brain for our 9 months old girl, she has a mild motor delay.Born via c-section at 38 weeks, AS 8 at 1 minute, 9 at 5 min. She rolls over, sit with support, great eye contact, smiles, eats , sleeps well, coos, babbles, happy, no hearing or visions problems. Did you had a similar experience? Cannot pull up for stand up, sit with support, didn't start to crawl on 4, just on her belly. Stiff legs if I am trying to sits her, sit sometimes well for 40 seconds or so. Reflexes are ok. Please, help me out with this one, I am worrying so much for her. She is 17 lbs, 28 1/5 inch. Thanks
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My son was a little slower. Didn't roll both ways till 7 months. Didn't crawl till 9 months, and now he pulls himself up and stand a few seconds since 10 months. he'll be 11 months tomorrow. My friends baby just army crawled too, like yours and the doctor doesn't think anything is wrong. Both children are actually very intelligent, which is what happens with babies who are slower with motor skills. I wouldn't worry and I wonder why the tests!