Synchrotrons: Devices for accelerating protons or electrons in closed orbits where the accelerating voltage and magnetic field strength varies (the accelerating voltage is held constant for electrons) in order to keep the orbit radius constant.Electromagnetic Radiation: Waves of oscillating electric and MAGNETIC FIELDS which move at right angles to each other and outward from the source.Radiation Dosage: The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).Brachytherapy: A collective term for interstitial, intracavity, and surface radiotherapy. It uses small sealed or partly-sealed sources that may be placed on or near the body surface or within a natural body cavity or implanted directly into the tissues.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.MuseumsRadiation, Ionizing: ELECTROMAGNETIC RADIATION or particle radiation (high energy ELEMENTARY PARTICLES) capable of directly or indirectly producing IONS in its passage through matter. The wavelengths of ionizing electromagnetic radiation are equal to or smaller than those of short (far) ultraviolet radiation and include gamma and X-rays.Algorithms: A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.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.Genomics: The systematic study of the complete DNA sequences (GENOME) of organisms.Models, Statistical: Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.Data Interpretation, Statistical: Application of statistical procedures to analyze specific observed or assumed facts from a particular study.Software: Sequential operating programs and data which instruct the functioning of a digital computer.Serpins: A family of serine proteinase inhibitors which are similar in amino acid sequence and mechanism of inhibition, but differ in their specificity toward proteolytic enzymes. This family includes alpha 1-antitrypsin, angiotensinogen, ovalbumin, antiplasmin, alpha 1-antichymotrypsin, thyroxine-binding protein, complement 1 inactivators, antithrombin III, heparin cofactor II, plasminogen inactivators, gene Y protein, placental plasminogen activator inhibitor, and barley Z protein. Some members of the serpin family may be substrates rather than inhibitors of SERINE ENDOPEPTIDASES, and some serpins occur in plants where their function is not known.Triplets: Three individuals derived from three FETUSES that were fertilized at or about the same time, developed in the UTERUS simultaneously, and born to the same mother.Semiconductors: Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.Fetal Mortality: Number of fetal deaths with stated or presumed gestation of 20 weeks or more in a given population. Late fetal mortality is death after of 28 weeks or more.Quintuplets: Five individuals derived from five FETUSES that were fertilized at or about the same time, developed in the UTERUS simultaneously, and born to the same mother.Multiple Birth Offspring: The offspring in multiple pregnancies (PREGNANCY, MULTIPLE): TWINS; TRIPLETS; QUADRUPLETS; QUINTUPLETS; etc.Light: That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.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.Pelvis: The space or compartment surrounded by the pelvic girdle (bony pelvis). It is subdivided into the greater pelvis and LESSER PELVIS. The pelvic girdle is formed by the PELVIC BONES and SACRUM.Ultrasonography, Prenatal: The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.Pelvic Organ Prolapse: Abnormal descent of a pelvic organ resulting in the protrusion of the organ beyond its normal anatomical confines. Symptoms often include vaginal discomfort, DYSPAREUNIA; URINARY STRESS INCONTINENCE; and FECAL INCONTINENCE.Uterus: The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.Gynecology: A medical-surgical specialty concerned with the physiology and disorders primarily of the female genital tract, as well as female endocrinology and reproductive physiology.Echocardiography, Four-Dimensional: Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (Mayo Clin Proc 1993;68:221-40)Transducers: Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Ultrasonics: A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.Breast: In humans, one of the paired regions in the anterior portion of the THORAX. The breasts consist of the MAMMARY GLANDS, the SKIN, the MUSCLES, the ADIPOSE TISSUE, and the CONNECTIVE TISSUES.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.Optical Devices: Products or parts of products used to detect, manipulate, or analyze light, such as LENSES, refractors, mirrors, filters, prisms, and OPTICAL FIBERS.Ear Canal: The narrow passage way that conducts the sound collected by the EAR AURICLE to the TYMPANIC MEMBRANE.Culture Media: Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.Adaptation, Physiological: The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.Dentition: The teeth collectively in the dental arch. Dentition ordinarily refers to the natural teeth in position in their alveoli. Dentition referring to the deciduous teeth is DENTITION, PRIMARY; to the permanent teeth, DENTITION, PERMANENT. (From Jablonski, Dictionary of Dentistry, 1992)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.PrintingPowders: Substances made up of an aggregation of small particles, as that obtained by grinding or trituration of a solid drug. In pharmacy it is a form in which substances are administered. (From Dorland, 28th ed)Illusions: The misinterpretation of a real external, sensory experience.Printers' MarksInkMetallurgy: The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)Color: The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Color Perception: Mental processing of chromatic signals (COLOR VISION) from the eye by the VISUAL CORTEX where they are converted into symbolic representations. Color perception involves numerous neurons, and is influenced not only by the distribution of wavelengths from the viewed object, but also by its background color and brightness contrast at its boundary.Ultrasonography, Doppler, Color: Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.Color Vision: Function of the human eye that is used in bright illumination or in daylight (at photopic intensities). Photopic vision is performed by the three types of RETINAL CONE PHOTORECEPTORS with varied peak absorption wavelengths in the color spectrum (from violet to red, 400 - 700 nm).Color Perception Tests: Type of vision test used to determine COLOR VISION DEFECTS.Technetium Tc 99m Sestamibi: A technetium imaging agent used to reveal blood-starved cardiac tissue during a heart attack.Cortical Synchronization: EEG phase synchronization of the cortical brain region (CEREBRAL CORTEX).Embryo, Nonmammalian: The developmental entity of a fertilized egg (ZYGOTE) in animal species other than MAMMALS. For chickens, use CHICK EMBRYO.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.Zebrafish: An exotic species of the family CYPRINIDAE, originally from Asia, that has been introduced in North America. They are used in embryological studies and to study the effects of certain chemicals on development.Estrus Synchronization: Occurrence or induction of ESTRUS in all of the females in a group at the same time, applies only to non-primate mammals with ESTROUS CYCLE.Green Fluorescent Proteins: Protein analogs and derivatives of the Aequorea victoria green fluorescent protein that emit light (FLUORESCENCE) when excited with ULTRAVIOLET RAYS. They are used in REPORTER GENES in doing GENETIC TECHNIQUES. Numerous mutants have been made to emit other colors or be sensitive to pH.
Structural origins of fibrin clot rheology. (1/8132)
The origins of clot rheological behavior associated with network morphology and factor XIIIa-induced cross-linking were studied in fibrin clots. Network morphology was manipulated by varying the concentrations of fibrinogen, thrombin, and calcium ion, and cross-linking was controlled by a synthetic, active-center inhibitor of FXIIIa. Quantitative measurements of network features (fiber lengths, fiber diameters, and fiber and branching densities) were made by analyzing computerized three-dimensional models constructed from stereo pairs of scanning electron micrographs. Large fiber diameters and lengths were established only when branching was minimal, and increases in fiber length were generally associated with increases in fiber diameter. Junctions at which three fibers joined were the dominant branchpoint type. Viscoelastic properties of the clots were measured with a rheometer and were correlated with structural features of the networks. At constant fibrinogen but varying thrombin and calcium concentrations, maximal rigidities were established in samples (both cross-linked and noncross-linked) which displayed a balance between large fiber sizes and great branching. Clot rigidity was also enhanced by increasing fiber and branchpoint densities at greater fibrinogen concentrations. Network morphology is only minimally altered by the FXIIIa-catalyzed cross-linking reaction, which seems to augment clot rigidity most likely by the stiffening of existing fibers. (+info)Three-dimensional facial growth studied by optical surface scanning. (2/8132)
The objective of the investigation was to study the three-dimensional growth of the face, and to examine the hypothesis that there are three-dimensional differences between the faces of boys and girls. The subjects comprised 132 British Caucasians aged 5-10 years measured by optical surface scanning in this cross-sectional study. Average scans for each age and sex subgroup were superimposed to assess the differences with age and sex. Males were generally larger than females. The greatest difference was between the facial heights and the least in the mid-facial dimensions. The face height of both sexes increased by an average of 3-4 mm annually. Mid-face prominence and width altered little. Mandibular width increased by 1-3 mm a year, rising to 3-5 mm in some years at the inferior areas of the mandibular region. Mandibular prominence also increased. Nose height and prominence and alar base width increased by 2 mm per year on average. Dorsum width changed little. Boys were generally larger than girls. Growth in facial height was greatest. Mid-face prominence and width changed little with age, whilst the prominence and width of the lower face increased more. Nasal prominence and alar base width increased at most ages. Dimensions changed more than reported by cephalometric studies, possibly as this study included the soft tissues. Refereed Scientific Paper (+info)Detection of viable myocardium by dobutamine stress tagging magnetic resonance imaging with three-dimensional analysis by automatic trace method. (3/8132)
The present study attempted to detect the viability of myocardium by quantitative automatic 3-dimensional analysis of the improvement of regional wall motion using an magnetic resonance imaging (MRI) tagging method. Twenty-two subjects with ischemic heart disease who had abnormal wall motion on echocardiography at rest were enrolled. All patients underwent dobutamine stress echocardiography (DSE), coronary arteriography and left ventriculography. The results were compared with those of 7 normal volunteers. MRI studies were done with myocardial tagging using the spatial modulation of magnetization technique. Automatic tracing with an original program was performed, and wall motion was compared before and during dobutamine infusion. The evaluation of myocardial viability with MRI and echocardiography had similar results in 19 (86.4%) of the 22 patients; 20 were studied by positron emission tomography or thallium-201 single photon emission computed tomography for myocardial viability, or studied for improvement of wall motion following coronary intervention. The sensitivity of dobutamine stress MRI (DSMRI) with tagging was 75.9% whereas that of DSE was 65.5%. The specificity of DSMRI was 85.7% (6/7) and that of DSE was 100% (7/7). The accuracy of DSMRI was 77.8% (28/36) and that of DSE 72.2% (26/36). DSMRI was shown to be superior to DSE in terms of evaluation of myocardial viability. (+info)Left cervical aortic arch with aortic coarctation and saccular aneurysm. (4/8132)
Cervical aortic arch is a very rare malformation and is occasionally accompanied by other cardiovascular anomalies. A 48-year-old male patient had a left cervical aortic arch with aortic coarctation and saccular aneurysm distal to the coarcted segment. The major clinical manifestations were upper body hypertension with a 50-mmHg discrepancy between the upper and lower limbs and a loud continuous murmur in the upper chest and back. Magnetic resonance angiography successfully depicted the anomalous aorta, and the aortic coarctation and aneurysm were surgically resected and the thoracic aorta was reconstructed. The discrepancy in blood pressure diminished after the operation, but antihypertensive medication was continued to satisfactorily control the hypertension. (+info)Three-dimensional ultrasonographic imaging of the neonatal brain in high-risk neonates: preliminary study. (5/8132)
The aim of this investigation was to compare the utility of three-dimensional ultrasonography versus two-dimensional ultrasonography in imaging the neonatal brain. Thirty patients in the neonatal intensive care unit underwent two-dimensional and three-dimensional ultrasonography. The resultant two- and three-dimensional images recorded on film and three-dimensional volumes (reviewed on a workstation) were evaluated independently. Comparable numbers of normal and abnormal studies were diagnosed by each modality. Axial images were considered useful in approximately 50% of three-dimensional cases. Image quality, overall and in the far-field, was rated higher on two-dimensional images. Three-dimensional sonographic acquisition time in the neonatal intensive care unit (1.7 min+/-0.7 standard deviation) was significantly shorter than that for two-dimensional sonography (9.0+/-4.5 min). The total time for evaluation on the three-dimensional workstation (4.4+/-1.1 min) was significantly less than that for two-dimensional images on film (10.6+/-4.7 min). In conclusion, three-dimensional ultrasonography is a promising, diagnostically accurate, and efficient imaging tool for evaluation of the neonatal brain; however, visualization must improve before it can replace two-dimensional ultrasonography. (+info)Usefulness of three-dimensional visualization of coronary arteries using electron-beam computed tomography data with volume rendering. (6/8132)
Three-dimensional images of the coronary arteries using electron-beam computed tomography (EBCT) data with shaded surface rendering makes it possible to achieve images easily with a short reconstruction time. However, a lower threshold is required to estimate vessel diameters and there is a quantitative problem compared with conventional coronary arteriography. In combination with volume rendering, EBCT may be useful to detect the normal coronary artery wall, the major components of the atherosclerotic plaque (lipid, fibrous connective tissue and calcium). EBCT scans offer a new, non-invasive alternative to conventional coronary arteriography for diagnosis of coronary artery disease. (+info)Unilateral semicircular canal aplasia in Goldenhar's syndrome. (7/8132)
A patient with Goldenhar's syndrome (oculoauriculovertebral dysplasia) and unilateral aplasia of all semicircular canals is presented. This is the first report of such a finding and may support the hypothesis that Goldenhar's syndrome and the CHARGE association have a common pathogenetic mechanism. (+info)Clinical application of three-dimensional ultrasound in fetal brain assessment. (8/8132)
AIM: To clarify the usefulness of three-dimensional (3D) ultrasound in the assessment of the fetal head and brain, according to 3D ultrasound surface reconstruction, multiplanar image analysis, three-dimensional angiography, and volume calculation. METHODS: We examined 326 normal fetuses between 10 and 40 weeks of gestation using 3D ultrasound (Voluson, 530D, Medison, Seoul, Korea), mainly with transvaginal 3D transducer. Fetal head structures, such as the skull, brain structure, and brain circulation, were presented by surface mode, multiplanar imaging mode, and three-dimensional Doppler mode. After automatic volume acquisition of the fetal head, image analyses were performed off-line, and 3D View software was used for volume imaging of the lateral ventricle and choroid plexus in randomly selected 30 normal fetuses. Seven fetuses with intracranial abnormalities were evaluated by 3D ultrasound functions. RESULTS: Surface mode of 3D ultrasound objectively depicted in vivo development of the cranial bones and formation of the cranial sutures and fontanelles in normal fetuses. Multiplanar image analysis of the brain structure presented a fetal brain in more cutting sections than conventional 2D ultrasound. Transvaginal 3D angiography was successful in 13% of normal fetuses and rotation of 3D circulatory image allowed the analysis of the intracranial vessels. Volume imaging showed the intracranial structures, such as the lateral ventricle and choroid plexus. Intracranial abnormalities were longitudinally evaluated by 3D ultrasound and objective images helped in reaching prenatal diagnoses. CONCLUSION: Advanced 3D ultrasonography and software for volume analysis can provide additional objective information about the fetal skull formation, brain structure, and brain circulation. (+info)
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TomographyReconstructionDataStructuresProducesDiagnostic ImagingAcquisitionsDistortionsOptical coherenceComputed tomographyCharacterizationMethodsSegmentationNoninvasiveMagnetic ResonanMulti-dimensionalReconstructionsConfocal microscopyDopplerSlicesStrainAlgorithmsConventionalCross-sectionalReal-time 3DMitralMicroscopyMethodSpecimensSpectroscopic imagesPluralityCoherentAxialHigh throughputAdvancesPerfusionOrthogonalDetectionSystemQuantificationEndoscopicTechniqueVentricularPelvicComputeRamanAnalysisProjectionsTransducerCardiovascular magneticDiffusionEchocardiographicGeometriesQuantifyRapid
Tomography1
- We have developed three-dimensional visualizations of the fish body and swimbladder from x-ray and Computerized Tomography (CT) images ( 3D Computerized Tomography ). (noaa.gov)
Reconstruction2
- As specified by the design, the software is equipped with parallel 2D and 3D visualization and intuitive neuron tracing/editing functions, allowing the user to efficiently reconstruct neurons from fluorescence image data and edit standard neuron structure files produced by any other reconstruction software. (eneuro.org)
- Digital reconstruction, or tracing, of neuron morphologies from light microscope images is an important step in the mapping of brain circuits. (eneuro.org)
Data3
- Acoustical data are usually displayed as two-dimensional 'echograms' - vertical dimension through the water column, and time or distance along the horizontal axis. (noaa.gov)
- We have developed three-dimensional visualizations of multi-frequency acoustic data to view the data in geographical space from small to large spatial scales ( 3D Echograms ). (noaa.gov)
- These visualizations include three-dimensional movies of acoustic survey data, internal anatomy of selected fish species, and predicted acoustical backscatter. (noaa.gov)
Structures2
- The image produced shows the bony structures closest to the film cassette. (doctorspiller.com)
- Why doesn't the panoramic image show those structures as well? (doctorspiller.com)
Produces1
- It produces a two dimensional image of a single slice along the mandibular arch. (doctorspiller.com)
Diagnostic Imaging2
- 3D ultrasound imaging of the female pelvis is one of the most important recent advances in diagnostic imaging. (medworm.com)
- CONCLUSION: Survival across the two time periods remained stable for oral SCC but showed a significant increase for oropharyngeal SCC, possibly because of improvements in the patients ' response to radiotherapy, such as intensity-modulated radiation therapy, and the use of more accurate diagnostic imaging approaches. (medworm.com)
Acquisitions1
- Volume acquisitions can provide a large number of images of the pelvic organs simultaneously and in any plane or orientation desired. (medworm.com)
Distortions1
- The panoramic x-ray machine (also known by their brand names, the two most popular being the Panorex and the Orthopantomograph [OPG]) makes use of distortions, which in ordinary intraoral radiographs would produce very poor images. (doctorspiller.com)
Optical coherence5
- High-resolution three-dimensional optical coherence tomography imaging of kidney microanatomy ex vivo. (nih.gov)
- Optical coherence tomography (OCT) is an emerging medical imaging technology that enables high-resolution, noninvasive, cross-sectional imaging of microstructure in biological tissues in situ and in real time. (nih.gov)
- To image, describe, and characterize different features visible in the crystalline lens of older adults with and without cataract when imaged three-dimensionally with a swept-source optical coherence tomography (SS-OCT) system. (arvojournals.org)
- To investigate the three-dimensional (3D), spectral-domain (SD) optical coherence tomography (3D,SD-OCT) imaging of the macular retinal nerve fiber layer (RNFL) in eyes with glaucoma. (arvojournals.org)
- Optical coherence tomography (OCT), a noninvasive imaging technique used to obtain high-resolution cross-sectional images of the retina, permits analysis of structural abnormalities in the three anatomic locations that have abnormalities in eyes with glaucoma: the optic nerve head, circumpapillary (cp)RNFL, and macula. (arvojournals.org)
Computed tomography6
- Three-dimensional imaging is a technique that combines many scans (from computed tomography, MRI or ultrasonography) computationally. (nature.com)
- The combination of ultrafast ultrasound and positron emission tomography-computed tomography enables the simultaneous 3D imaging of anatomy and metabolism at high resolution. (nature.com)
- Today, X-ray computed tomography - developed during the 1960s/70s for cross-sectional imaging in medicine - is an established technique at synchrotron sources for three-dimensional microimaging of materials and devices. (esrf.eu)
- 8 Dual-energy x-ray absorptiometry 9 (DXA), computed tomography 10 (CT), and magnetic resonance imaging 11 are more advanced and accurate techniques, but their significant expense and nonportability restricts their use to medical and research settings. (pubmedcentralcanada.ca)
- This study compared the diagnostic ability of image-based parameters with texture parameters in the differentiation of hepatocellular carcinoma (HCC) and hepatic lymphoma (HL) by positron emission tomography-computed tomography (PET/CT). (frontiersin.org)
- Prostate segmentation in computed tomography (CT) images is useful for planning and guidance of the diagnostic and therapeutic procedures. (spie.org)
Characterization3
- This method promises to be particularly useful for three-dimensional characterization of anatomy, innervation and expression of genes or proteins in the many new animal models of hearing and balance generated by genetic manipulation. (nih.gov)
- In addition, there has been a gap thus far, in direct characterization of DTI due to limitations in planar images of histology. (doria.fi)
- In this work, we first improved the two-dimensional (2D) histological characterization of DTI data. (doria.fi)
Methods13
- In addition, we describe 3D segmentation methods that can be used for analysis of the volume of the prostate and carotid vessel lumen using 3D ultrasound images. (spie.org)
- An alternative approach to strain imaging using 2-D non-Doppler speckle tracking can minimize the angle dependency problems of Doppler-based methods by estimating in-plane 2-D strain components. (pubmedcentralcanada.ca)
- In order to study image registration methods in depth, their main components are identified and studied independently. (psu.edu)
- These advantages make fluorescence microscopy one of the most widely used imaging methods in biology. (sciencemag.org)
- METHODS The author first focused upon the ultrasound technique of transrectal color Doppler imaging (CDI) [10,11,15,16,17, (urotoday.com)
- Methods and Results -94 patients (54±11 years, 38% female) with degenerative isolated MR underwent cine-magnetic resonance imaging (MRI) with tissue tagging and three-dimensional analysis. (ahajournals.org)
- The various methods for image segmentation allow a fast and comfortable processing even of large data sets. (unboundmedicine.com)
- TY - JOUR T1 - [Computer graphics methods for 3-dimensional imaging of intrapulmonary space-occupying lesions of CT and MRI images]. (unboundmedicine.com)
- This module contains two texture analysis filters that are used to compute feature maps of N-Dimensional images using two well-known texture analysis methods. (insight-journal.org)
- Combining sophisticated imaging tools such as MRI with selective tumor sampling methods and new proteomics technology, specific patterns of protein expression can be identified in GBM. (aacrjournals.org)
- The methods are sufficiently robust to image tissues within the heart at cellular resolution over a wide range of ages, even when motion patterns are only quasiperiodic. (caltech.edu)
- Scientists at UCLA have developed an advanced optical imaging technique that uses spectral brushes to capture image data across an entire sample area at once, a technique that enables faster imaging and higher sensitivity over current methods. (universityofcalifornia.edu)
- Improved label-free imaging methods are required that can simultaneously analyze all the cells within a 3D specimen rather than simply integrating a cumulative signal response. (technologynetworks.com)
Segmentation17
- Segmentation of MR brain images using intensity values is severely limited owing to field inhomogeneities, susceptibility artifacts and partial volume effects. (springer.com)
- Anisotropic diffusion pyramids for image segmentation. (springer.com)
- Review of MR image segmentation techniques using pattern recognition. (springer.com)
- 3-D segmentation of MR images of the head for 3-D display. (springer.com)
- The integration of image segmentation maps using region and edge information. (springer.com)
- Three dimensional segmentation of MR images of the head using probability and connectivity. (springer.com)
- The segmentation techniques applied to 3D ultrasound images has been shown to be less variable than manual segmentation techniques and of value in both 3D ultrasound-guided prostate brachytherapy and in the assessment of carotid plaque progression/regression. (spie.org)
- In this paper a novel approach for the registration and segmentation of dynamic contrast enhanced renal MR images is presented. (springer.com)
- This integrated method is motivated by the observation of the reciprocity between registration and segmentation in 4D time-series images. (springer.com)
- For verification, we constructed a web-based visual verification system with 414 pairs of images with cells and their segmentation results, and with 4,968 movies with animated cell, scaffold, and contact overlays. (nist.gov)
- Enhancing a diffusion algorithm for 4D image segmentation using local. (spiedigitallibrary.org)
- Utilization of a ultrafast 3D CT scanner to acquire full body 3D images for segmentation and registration with subsequently acquired 3D ultrasound images, modelling future missions for ground-based 3D CT or MRI could provide a template to judge physiologic or pathologic changes observed in space with 3D ultrasound. (clinicaltrials.gov)
- Characterizing the performance of image segmentation approaches has been a persistent challenge. (psu.edu)
- Figure 1 demonstrates the image segmentation process and results. (ahajournals.org)
- However, the low soft-tissue contrast of CT images makes the manual prostate segmentation a time-consuming task with high inter-observer variation. (spie.org)
- We developed a semi-automatic, three-dimensional (3D) prostate segmentation algorithm using shape and texture analysis and have evaluated the method against manual reference segmentations. (spie.org)
- For segmentation, we used the learned shape and texture characteristics of the prostate in CT images and we used a set of user inputs for prostate localization. (spie.org)
Noninvasive2
- Three-dimensional power Doppler imaging is completely noninvasive and will facilitate basic and preclinical research on neoangiogenesis in live animal models. (aacrjournals.org)
- Noninvasive High-Resolution Electromyometrial Imaging of Uterine Contractions in a Translational Sheep Model" by Wenjie Wu , Hui Wang , Alison Cahill , Phillip Cuculich , Yong Wang , et al. (ptcommunity.com)
Magnetic Resonan7
- assessment of 3-D surface by magnetic resonance imaging. (springer.com)
- By using high-resolution three-dimensional diffusion magnetic resonance imaging and a newly designed tracking approach, we show that neuronal pathways in the rat brain can be probed in situ. (nih.gov)
- Positron emission tomography (PET) and magnetic resonance imaging (MRI) techniques are increasingly used for investigations of the mouse and rat brain, in the context of numerous types of general brain mapping or disease model investigations. (frontiersin.org)
- Magnetic resonance imaging tracking of human adipose derived stromal cells within three-dimensional scaffolds for bone tissue engineering. (archives-ouvertes.fr)
- The purpose of this study was to use Magnetic Resonance Imaging (MRI)-based tracking of these cells, labelled with magnetic agents for in vivo longitudinal assessment. (archives-ouvertes.fr)
- Bilateral subthalamic stimulation for Parkinson's disease by using three-dimensional stereotactic magnetic resonance imaging and electrophysiological guidance. (thejns.org)
- As assessed using three-dimensional (3D) magnetic resonance imaging (MRI), what changes in left ventricular (LV) end-systolic dimension and volume occur among patients with isolated degenerative mitral regurgitation (MR)? (acc.org)
Multi-dimensional7
- Here we review recent developments in such multi-dimensional electron spectroscopy studies which utilize atomic, photonic, and electronic collisions. (go.jp)
- An apparatus for multi-dimensional computation which comprises a computation engine, including a plurality of processing modules. (google.cl)
- The processing modules are configured in parallel and compute respective contributions to a computed multi-dimensional image of respective two dimensional data sets. (google.cl)
- A high-speed, parallel access storage system is provided which stores the multi-dimensional data sets, and a switching circuit routes the data among the processing modules in the computation engine and the storage system. (google.cl)
- The processing modules include a programmable local host, by which they may be configured to execute a plurality of different types of multi-dimensional algorithms. (google.cl)
- 3. The apparatus of claim 1, wherein the computation engine includes means, coupled with the plurality of processing modules, for configuring the plurality of processing modules to execute a plurality of different types of multi-dimensional algorithms. (google.cl)
- because relatively high repetition frequencies are required to minimize decorrelation due to multi-dimensional motion. (pubmedcentralcanada.ca)
Reconstructions3
- Three-dimensional root reconstructions were generated and analyzed using a custom-designed software, RootReader3D. (plantphysiol.org)
- Based on these three-dimensional reconstructions, different views from arbitrary perspectives (including simulated endoscopic images) were generated and animated film sequences of the 3D scene were displayed with 30 frames/second. (unboundmedicine.com)
- The ptychography images are reconstructions of the optical phase shift throughout the whole specimen, whereas those from the confocal microscope represent the fluorescence intensity from the fluorophores which are embedded within the cell walls only. (technologynetworks.com)
Confocal microscopy1
- Three-dimensional imaging of the intact mouse cochlea by fluorescent laser scanning confocal microscopy. (nih.gov)
Doppler2
- Biplane color Doppler imaging (CDI), a technique that is currently emerging due to improvements in cancer detection, cannot be used to differentiate between different types of hypervascularized lesions such as prostatitis or cancer. (urotoday.com)
- We report the first application of high-frequency three-dimensional power Doppler ultrasound imaging in a genetically engineered mouse (GEM) prostate cancer model. (aacrjournals.org)
Slices3
- TIFF and Analyze Image format), which can either be visualized as orthogonal slices in a separate window or in the 3-D viewer. (frontiersin.org)
- Nearly 630 image slices were processed and segmented using the specialized image processing software, ScanIP. (ahajournals.org)
- It also demonstrates an increase in the number of sections, or slices, imaged using this method from 5 to 34. (technologynetworks.com)
Strain6
- Ultrasound strain imaging using two-dimensional (2-D) speckle tracking has been proposed to quantitatively assess changes in myocardial contractility due to ischemia. (pubmedcentralcanada.ca)
- Recent progress in the development of dichroic Bragg coherent diffractive imaging, a new technique for simultaneous three-dimensional imaging of strain and magnetization at the nanoscale, is reported. (iucr.org)
- Future applications of dichroic Bragg coherent diffractive imaging for the correlation of strain and lattice defects with magnetic ordering and inhomogeneities are considered. (iucr.org)
- The current study utilizes images extracted from cryo imaging to render a 3D finite element model of a human coronary vessel to determine the stress and strain fields throughout an atherosclerotic plaque. (ahajournals.org)
- Blinded off-line analysis was performed for left ventricular 2-dimensional (2D) ejection fraction (EF2D) and 3D ejection fraction (EF3D) and global peak systolic area, longitudinal, circumferential, and radial strain. (ovid.com)
- Two-Dimensional Strain and Strain Rate Imaging of the Left Atrium and Left Ventricle in Adult Patients with Atrial Septal Defects before and after the Later Stage of Percutaneous Device Closure. (biomedsearch.com)
Algorithms3
- The algorithms used to reconstruct CT images into 3D are mainly in the public domain, so there are tremendous similarities among the products offered by the various vendors," said Rumberger. (appliedradiology.com)
- Table1 contains the taxonomy of image processing algorithms that results from combining the steps of the image processing chain with the abstraction level of the input data. (psu.edu)
- In an era with increased access to 3D imaging in a variety of formats, clinical decision making should evolve away from algorithms based on one-dimensional imaging. (acc.org)
Conventional10
- We use qVRI to image: human pluripotent stem cells and monocytes/macrophages in conventional culture systems, as well as mesenchymal stem cells in 3D biomaterials. (nature.com)
- After performing diagnostic tasks using all image types, all radiologists preferred conventional surface projections. (ajnr.org)
- Side-by-side comparison of image data with conventional atlas diagram is hampered by the 2-D format of the atlases, and by the lack of an analytical environment for accumulation of data and integrative analyses. (frontiersin.org)
- The diffraction barrier, however, limits the imaging resolution of conventional light microscopy to 200 to 300 nm in the lateral dimensions, leaving many intracellular organelles and molecular structures unresolvable. (sciencemag.org)
- Where possible, measurements from the three-dimensional platform were validated and were highly correlated with conventional two-dimensional measurements. (plantphysiol.org)
- These tests include (1) using conventional Bragg coherent diffractive imaging to determine whether the phase retarder introduces aberrations using a nonmagnetic gold nanocrystal as a control sample, and (2) collecting coherent diffraction patterns of a magnetic Gd 5 Si 2 Ge 2 nanocrystal with left- and right-circularly polarized X-rays. (iucr.org)
- Conventional transrectal ultrasound imaging can be used for positioning of the biopsy needle. (urotoday.com)
- Conventional imaging systems poorly define these anatomic deviations, and thereby can lead to prolonged procedural times, increased radiation exposure and inaccurate lesion delivery. (eplabdigest.com)
- Conventional detection techniques for imaging are slow and incapable of capturing dynamic processes that occur on the time scale of nanoseconds. (universityofcalifornia.edu)
- In summary, the paper demonstrates how a form of 3D ptychography can be implemented on a conventional microscope platform and can produce optically sectioned images of relatively thick samples on the micron scale. (technologynetworks.com)
Cross-sectional2
- OCT imaging produced cross-sectional and en face images that revealed the sizes and shapes of the uriniferous tubules and renal corpuscles. (nih.gov)
- However, cross-sectional imaging based calculation of the Haller Index implies exposure to ionizing radiation that should be limited at all times to diminish the cumulative long-term risks of malignancy. (clinicaltrials.gov)
Real-time 3D2
- The more recent improvements in computer technology have allowed us to go from a system that required an hour or more to make a single reasonable image to real-time 3D imaging with continuous one-on-one interaction with the volume dataset. (appliedradiology.com)
- This real-time 3D TEE yields high-quality images of the MV (Fig. 1). (nih.gov)
Mitral1
Microscopy7
- Recent advances in far-field fluorescence microscopy have led to substantial improvements in image resolution, achieving a near-molecular resolution of 20 to 30 nanometers in the two lateral dimensions. (sciencemag.org)
- Far-field optical microscopy offers three-dimensional (3D) imaging of biological specimens with minimal perturbation and biomolecular specificity when combined with fluorescent labeling. (sciencemag.org)
- Three-dimensional fluorescence imaging is most commonly performed using confocal or multiphoton microscopy, the axial resolution of which is typically in the range of 500 to 800 nm ( 11 , 12 ). (sciencemag.org)
- The axial imaging resolution can be improved to roughly 100 nm by 4Pi and I 5 M microscopy ( 13 - 15 ). (sciencemag.org)
- To explore membrane structural changes relevant to HIV transmission across other types of intercellular conjugates, we used a combination of light and focused ion beam scanning electron microscopy (FIB-SEM) to determine the three-dimensional (3D) architectures of contact regions between HIV-1-infected CD4(+) T cells and either uninfected human CD4(+) T cells or human fetal astrocytes. (sigmaaldrich.com)
- We present a study where the distribution of polymer cross-linking in three-dimensional microstructures fabricated by TPP is visualized by means of coherent anti-Stokes Raman scattering (CARS) microscopy. (techconnectworld.com)
- Labelled cells were then seeded within a 3D porous polysaccharide-based scaffold and imaged in vitro using fluorescence microscopy and MRI. (archives-ouvertes.fr)
Method24
- A method and apparatus for imaging an object including the steps of projecting radiation from a radiation source through an object and moving the radiation source through multiple imaging positions relative to the object without stopping movement of the radiation source. (google.com)
- 2. The method of claim 1 further comprising projecting radiation only while moving the radiation source through the multiple imaging positions. (google.com)
- 3. The method of imaging an object of claim 1 wherein the velocity of the radiation source is varied within a select imaging position. (google.com)
- 4. The method of imaging an object of claim 1 wherein the radiation source is accelerated or decelerated between imaging positions. (google.com)
- 5. The method of imaging an object of claim 1 wherein the motion of the radiation source is stopped at one or more of the imaging positions. (google.com)
- 6. The method of imaging an object of claim 1 further comprising projecting radiation at a select dosage for one imaging position that is different from the radiation dosage selected for a second imaging position. (google.com)
- The method is almost analogous to medical ultrasound imaging except that it uses light instead of sound waves to visualize structures in the body in real time, and with higher resolution. (medgadget.com)
- J.-H. Lin and W. C. Chew, "Three-dimensional microwave imaging by local shape function method with CGFFT," in Proceedings of the AP-S International Symposium & URSI Radio Science Meeting , pp. 2148-2151, Baltimore, Md, USA, July 1996. (hindawi.com)
- The invention relates to a system and a method for the generation of 3D images of a moving joint ( 1 ). (freepatentsonline.com)
- We propose a capturing method for integral 3-D imaging using multiviewpoint robotic cameras. (spiedigitallibrary.org)
- In experiments, we reconstructed integral 3-D images of karate players and confirmed that the proposed method satisfied the above requirements. (spiedigitallibrary.org)
- The integral 3-D method requires no special glasses to view 3-D images and provides both vertical and horizontal disparity. (spiedigitallibrary.org)
- In the display stage of the integral 3-D method, a 3-D image is generated using a lens array to reconstruct light rays. (spiedigitallibrary.org)
- A method of obtaining a dental image, such as a three-dimensional image of teeth, providing a three-dimensional physical teeth model. (google.com.au)
- The method also includes removing a portion of the model in a controlled, step-wise manner, and in each step acquiring an optical image of the model or of its removed portion, digitizing each of the optical images in order to obtain a plurality of digital images, and compiling the plurality of digital images to obtain a three-dimensional digital dental image. (google.com.au)
- In particular, any finite element based registration method must address the questions of how to generate a mesh from an image and how to solve the system of finite element equations efficiently. (psu.edu)
- This paper introduces a method for dynamic 3D registration of female pelvic organs using 2D dynamic magnetic-resonance images (MRI). (inria.fr)
- This cost is greater than the cost of the actual solution method for two-dimensional problems but smaller than that for three- dimensional problems. (psu.edu)
- Diffusion tensor imaging (DTI) is a highly sensitive MRI method that unveils the changes in brain microstructures. (doria.fi)
- A method for processing a digital mesh representing a three-dimensional subject is described. (google.co.in)
- This approach was validated by an analysis of experimental and clinical MR images of the electrode, and the development of a three-dimensional (3D) atlas-MR imaging coregistration method. (thejns.org)
- The authors have demonstrated that 3D atlas-MR imaging coregistration is a reliable method for the precise localization of DBS electrodes on postoperative MR images. (thejns.org)
- Researchers at UCLA have developed an apparatus and method for high speed, real-time, two- and three-dimensional imaging that can overcome the fundamental trade-off between sensitivity and speed. (universityofcalifornia.edu)
- In 2010, IBM applied for a patent on a method to extract mental images of human faces from the human brain. (wikipedia.org)
Specimens3
- 2006), but penetration depth limitations with this technique require imaging early stages and/or using optically clear specimens or preparations. (psu.edu)
- Fresh frozen specimens were sectioned and imaged. (ahajournals.org)
- This work clearly has potential applications in high contrast and stain-free live cell imaging, as well as in the imaging of thick, strongly scattering specimens using X-rays and electrons. (technologynetworks.com)
Spectroscopic images1
- The depth of the protein crystal has been clearly identified by comparing the three-dimensional Raman spectroscopic images of the protein with those of water . (rsc.org)
Plurality4
- 11. An ultrasound system as defined in claim 1 wherein said array comprises a plurality of tiles affixed to a form that defines said transmitting and receiving surface, each of said tiles comprising a curved, two-dimensional array of rows and columns of said transducer elements. (google.es)
- In accordance with the present invention, only a plurality of N type light receiving regions for receiving light are arranged at a desired interval on the two-dimensional plane. (google.com)
- The three-dimensional physical teeth model can be either: a negative teeth model that includes a matrix with a plurality of cavities or recesses, each corresponding to. (google.com.au)
- In lenticular type three-dimensional (3D) photography, a plurality of two-dimensional (2D) views of the scene are taken from a number of horizontally spaced vantage points and a series of 2D images is then composed and printed at the focal plane on the emulsion of each of the lenticules of the lenticular print film to form a 3D composite image of the scene. (patents.com)
Coherent3
- The simplicity of the detection geometry, capability for optical parallel processing, and excellent signal-to-noise ratio make this system suitable for real-time, 2-dimensional coherent far infrared imaging applications. (sbir.gov)
- We computationally study the resolution limits for three-dimensional coherent x-ray diffractive imaging of heavy, nonbiological systems using Ar clusters as a prototype. (osti.gov)
- Feasibility tests for dichroic Bragg coherent diffractive imaging are presented. (iucr.org)
Axial3
- Using this approach, we achieved an image resolution of 20 to 30 nanometers in the lateral dimensions and 50 to 60 nanometers in the axial dimension. (sciencemag.org)
- Furthermore, an axial resolution as high as 30 to 50 nm has been obtained with STED along the axial direction using the 4Pi illumination geometry, but the same imaging scheme does not provide super resolution in the lateral dimensions ( 1 ). (sciencemag.org)
- In the early days of CT, radiologists were able to stack these axial images together, albeit sometimes a little bit awkwardly, and get volume approximations that were assembled over time. (appliedradiology.com)
High throughput3
- Recent advances in brain imaging and high throughput genotyping and sequencing techniques enable new approaches to study the influence of genetic variation on brain structure and function. (iu.edu)
- A novel imaging and software platform was developed for the high-throughput phenotyping of three-dimensional root traits during seedling development. (plantphysiol.org)
- Texture analysis is a newly-developed high throughput way to extract digital information from images that naked eyes cannot detect, and can thus explore more characteristics of images ( 10 ). (frontiersin.org)
Advances3
- 3D ultrasound imaging of the female pelvis is one of the most important recent advances in diagnostic imaging. (medworm.com)
- Advances in imaging are transforming our understanding of angiogenesis and the evaluation of drugs that stimulate or inhibit angiogenesis in preclinical models and human disease (for reviews, see refs. (aacrjournals.org)
- Label-free 3D live cell imaging is a challenge that remains to be addressed if advances in the development of 3D cell culture constructs for early-stage drug discovery are to reach their full potential. (technologynetworks.com)
Perfusion4
- MR imaging of kidneys functional evaluation using F-15 perfusion imaging. (springer.com)
- New horizons include its use in stress testing and perfusion imaging with echocardiographic contrast. (onlinejacc.org)
- Background Two-dimensional (2D) perfusion cardiovascular magnetic resonance (CMR) remains limited by a lack of complete myocardial coverage. (uzh.ch)
- Three-dimensional (3D) perfusion CMR addresses this limitation and has recently been shown to be clinically feasible. (uzh.ch)
Orthogonal3
- An ultrasound transducer assembly for use in a phased array ultrasound imaging system includes an array of ultrasound transducer elements having a two-dimensional transmitting and receiving surface that is curved in at least two orthogonal directions and conductors for connecting the transducer elements. (google.es)
- An ultrasound transducer assembly for use in a phased array ultrasound imaging system includes an array of ultrasound transducer elements having a two-dimensional transmitting and receiving surface that is curved in at least two orthogonal directions and conductors for connecting the transducer elements to electronic circuitry of the ultrasound imaging system. (google.es)
- The system permits cropping of 3D images in three different orthogonal axes (lateral, elevational, and depth). (bmj.com)
Detection3
- Image selective smoothing and edge detection by nonlinear diffusion. (springer.com)
- Christianne Mulat , Marc Donias , Pierre Baylou , Gerard Vignoles , and Christian Germain "Axis detection of cylindrical objects in three-dimensional images," Journal of Electronic Imaging 17(3), 031108 (1 July 2008). (spiedigitallibrary.org)
- STORM and PALM rely on single-molecule detection ( 16 ) and exploit the photoswitchable nature of certain fluorophores to temporally separate the otherwise spatially overlapping images of numerous molecules, thereby allowing the high-precision localization of individual molecules ( 4 - 7 , 9 ). (sciencemag.org)
System16
- 2. An ultrasound system as defined in claim 1 wherein said array comprises a curved, two-dimensional array of rows and columns of said transducer elements. (google.es)
- 5. The system of claim 1 wherein the sensor includes an optical coupling to an electronic imaging device outside the inflatable membrane. (google.es)
- 6. The system of claim 1 wherein the sensor includes an electronic imaging device electronically coupled to the processor. (google.es)
- 7. The system of claim 1 wherein the sensor includes a fiberscope with a lens for capturing images of the surface. (google.es)
- We will develop a real-time, two-dimensional THz wave imaging system. (sbir.gov)
- The proposed THz imaging system uses Electro-optic crystals and is capable of time-domain far-infrared spectroscopy across a frequency range extending from near DC to severalTHz. (sbir.gov)
- A raster based variable focal length (varifocal) mirror display system, which is integrated into a high-speed 200 million instructions per second (MIPS) image processor (IP), is described. (spie.org)
- Both control and experimental preserved rat kidneys were examined ex vivo by using a high-resolution OCT imaging system equipped with a laser light source at 1.3-microm wavelength. (nih.gov)
- Scientists at the Massachusetts Institute of Technology (MIT) have developed a new high-speed, three-dimensional endoscopic imaging system. (medgadget.com)
- 4. The system according to claim 1, characterized in that the monitoring device comprises an imaging device ( 10 ) for generating images of the joint ( 1 , 2 ) and an evaluation unit ( 30 ) for deriving the motion phase from said images. (freepatentsonline.com)
- 7. The system according to claim 1, characterized in that it comprises a display unit ( 32 ) for displaying the reconstructed 3D images, preferably comprising a film sequence. (freepatentsonline.com)
- We present a new 3-D body imaging system, which is designed for enhanced portability, affordability, and functionality. (pubmedcentralcanada.ca)
- Validation of a new three-dimensional imaging system using comparative craniofacial anthropometry. (3dmd.com)
- Background: The aim of this study is to validate a new three-dimensional craniofacial stereophotogrammetry imaging system (3dMDface) through comparison with manual facial surface anthropometry. (3dmd.com)
- Anaheim, California (23-July-13): A team of Cardiff University clinicians and computer scientists can, for the first time, carry out facial movement research and transform the way patients needing facial surgery are assessed and monitored thanks to a new state-of-the-art 3D surface motion imaging system from 3dMD (3dMD exhibiting at #SIGGRAPH2013 Booth 226). (3dmd.com)
- To demonstrate the platform's capacity, plants of two rice ( Oryza sativa ) genotypes, Azucena and IR64, were grown in a transparent gellan gum system and imaged daily for 10 d. (plantphysiol.org)
Quantification1
- however, the vast majority of cellular confocal Raman spectroscopy studies have still been limited to imaging of a single layer, which might compromise biomolecular quantification. (nature.com)
Endoscopic1
- Now OCT pioneer James G. Fujimoto of MIT and his colleagues made this technique also available for endoscopic imaging. (medgadget.com)
Technique6
- Ultrasound imaging is an important cost-effective technique used routinely in the management of a number of diseases. (spie.org)
- To produce a 3D image, the ultrasound transducer is scanned mechanically or using a free-hand technique. (spie.org)
- This limitation has been overcome by introducing a new synchrotron imaging technique for 3D imaging of flat, laterally extended objects. (esrf.eu)
- Three-dimensional (3D) stereophotogrammetry is a reliable technique in clinical practice, for example in volume measurements. (3dmd.com)
- Their process is called femtosecond real-time serial imaging (FARSI) and it employs a two-dimensional spectral pattern as a probe beam with optical amplification on the backend.The image is ultimately obtained through spectrum decoding of the back-reflected light from the sample.This technique is already described in Nature as being the "world's fastest camera. (universityofcalifornia.edu)
- ARLINGTON, Va. , March 13, 2019 /PRNewswire/ -- Scientists funded by the March of Dimes, the leading nonprofit for the health of moms and babies, have developed a new technique called electromyometrial imaging (EMMI) to display a color-coded, three-dimensional picture of uterine contractions that may one day help doctors identify and prevent preterm labor. (ptcommunity.com)
Ventricular1
- To obtain the tricuspid valve area from the ventricular perspective, the three dimensional full volume was cropped using the elevational plane from the apex. (bmj.com)
Pelvic3
- Volume acquisitions can provide a large number of images of the pelvic organs simultaneously and in any plane or orientation desired. (medworm.com)
- Three Dimensional View Of Human Pelvic is a piece of digital artwork by Stocktrek Images which was uploaded on May 30th, 2013. (fineartamerica.com)
- There are no comments for Three Dimensional View Of Human Pelvic . (fineartamerica.com)
Compute1
- This module contains bone analysis filters that compute features from N-dimensional images that represent the internal architecture of bone. (insight-journal.org)
Raman3
- Raman spectroscopy-based imaging studies on cellular systems have been mostly applied using non-confocal settings associated with challenges arising from substrate background signals and poor z -axis resolution giving rise to overlapping spectral signatures. (nature.com)
- Confocal Raman spectroscopic imaging has been used to find the location of protein crystals deposited in a nanodroplet. (rsc.org)
- Additionally, the low concentration region around a growing protein crystal in the nanodroplet was visualized using two-dimensional Raman spectroscopic imaging . (rsc.org)
Analysis8
- An HDBIG toolkit for mining high-level imaging genetic associations via applying enrichment analysis to two dimensional imaging genetic modules. (iu.edu)
- MR renography by semiautomated image analysis: performance in renal transplant recipients. (springer.com)
- Semiautomated ROI Analysis in Dynamic MRI-Studies: PartI: Image Analysis Tools for Automatic Correction of Organ Displacement. (springer.com)
- The tool presented facilitates assignment of location and comparative analysis of signal location in tomographic images with low structural contrast. (frontiersin.org)
- Three-dimensional stereophotogrammetry as an accurate tool in analysis of lymphedema of the hand. (3dmd.com)
- These features make cryo-imaging an attractive approach for rendering high-resolution 3D volumes that serve as a basis for finite element analysis (FEA) studies of plaque rupture. (ahajournals.org)
- To improve reproducibility and reliability of differential protein expression analysis, we utilize the two-dimensional differential gel electrophoresis (2D-DIGE) to analyze the extracted protein samples. (aacrjournals.org)
- The aim of this study was to test the hypothesis that RV contrast enhancement during 3D echocardiographic imaging would improve the accuracy of RV volume and function analysis. (ovid.com)
Projections3
- The generated X-ray projections are then classified according to the phase of joint movement to which they belong, and 3D images are reconstructed from X-ray projections of each class. (freepatentsonline.com)
- c) an image processing device ( 30 ) for subdividing said series of projections into classes corresponding to different motion phases of the joint ( 1 , 2 ) and for reconstructing 3D images from the projections of each class. (freepatentsonline.com)
- d) classifying the projections of said series into classes corresponding to different determined phases of the joint motion and reconstructing a 3D image from the projections for each class. (freepatentsonline.com)
Transducer2
- The array may include a curved, two-dimensional array of rows and columns of transducer elements. (google.es)
- The optical catheter uses a piezoelectric transducer, a miniature device that bends in response to electrical current, allowing a laser-light emitting optical fiber to be rapidly scanned over the area to be imaged. (medgadget.com)
Cardiovascular magnetic1
Diffusion1
- It is shown that both an improvement in accuracy and a reduction in image post-processing can be achieved if edge dependent diffusion is used instead of linear diffusion. (springer.com)
Echocardiographic1
- Over the years, countless publications have described these benefits and tested new frontiers where 3D echocardiographic imaging seemed to offer promising ways to improve patients' care. (onlinejacc.org)
Geometries2
- The reconstructed images from both geometries are generally consistent with the phantom, although some streaking artifacts due to the limited-angle nature of the geometries are observed. (spie.org)
- Due to its ability to fabricate microstructures with arbitrary three-dimensional geometries, TPP has been employed in diverse fields such as nanophotonics, microelectronics, microelectromechanical systems, and microfluidics. (techconnectworld.com)
Quantify2
- This single-centre prospective pilot study is conducted to assess the diagnostic accuracy of 3D optical surface imaging based external Haller Index (EHI) measurements to quantify the severity of pectus excavatum. (clinicaltrials.gov)
- The EHI, a modified measurement to assess pectus deformity, is used to quantify PE severity based on 3D optical surface images. (clinicaltrials.gov)
Rapid2
- Assessment of the effects of different rapid maxillary expansion appliances on facial soft tissues using three-dimensional imaging, S Altındiş, E Toy, FA Başçiftçi. (3dmd.com)
- Objective: To determine three-dimensional (3D) effects of three different rapid maxillary expansion (RME) appliances on facial soft tissues. (3dmd.com)