Radionuclide Imaging: The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.Radionuclide Angiography: The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. It is used to diagnose heart, liver, lung, and other diseases and to measure the function of those organs, except renography, for which RADIOISOTOPE RENOGRAPHY is available.Radioisotopes: Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Radionuclide Ventriculography: Imaging of a ventricle of the heart after the injection of a radioactive contrast medium. The technique is less invasive than cardiac catheterization and is used to assess ventricular function.Technetium: The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.Radionuclide Generators: Separation systems containing a relatively long-lived parent radionuclide which produces a short-lived daughter in its decay scheme. The daughter can be periodically extracted (milked) by means of an appropriate eluting agent.Cesium Radioisotopes: Unstable isotopes of cesium that decay or disintegrate emitting radiation. Cs atoms with atomic weights of 123, 125-132, and 134-145 are radioactive cesium isotopes.Water Pollutants, Radioactive: Pollutants, present in water or bodies of water, which exhibit radioactivity.Sodium Pertechnetate Tc 99m: A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, cardiovascular and cerebral circulation, brain, thyroid, and joints.Strontium Radioisotopes: Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.Gated Blood-Pool Imaging: Radionuclide ventriculography where scintigraphic data is acquired during repeated cardiac cycles at specific times in the cycle, using an electrocardiographic synchronizer or gating device. Analysis of right ventricular function is difficult with this technique; that is best evaluated by first-pass ventriculography (VENTRICULOGRAPHY, FIRST-PASS).Hybrid Cells: Any cell, other than a ZYGOTE, that contains elements (such as NUCLEI and CYTOPLASM) from two or more different cells, usually produced by artificial CELL FUSION.Soil Pollutants, Radioactive: Pollutants, present in soil, which exhibit radioactivity.Radiometry: The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.Radioactivity: The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Rhenium: Rhenium. A metal, atomic number 75, atomic weight 186.2, symbol Re. (Dorland, 28th ed)Radiopharmaceuticals: Compounds that are used in medicine as sources of radiation for radiotherapy and for diagnostic purposes. They have numerous uses in research and industry. (Martindale, The Extra Pharmacopoeia, 30th ed, p1161)Alpha Particles: Positively charged particles composed of two protons and two NEUTRONS, i.e. equivalent to HELIUM nuclei, which are emitted during disintegration of heavy ISOTOPES. Alpha rays have very strong ionizing power, but weak penetrability.Ventriculography, First-Pass: Radionuclide ventriculography where a bolus of radionuclide is injected and data are recorded from one pass through the heart ventricle. Left and right ventricular function can be analyzed independently during this technique. First-pass ventriculography is preferred over GATED BLOOD-POOL IMAGING for assessing right ventricular function.Plutonium: Plutonium. A naturally radioactive element of the actinide metals series. It has the atomic symbol Pu, atomic number 94, and atomic weight 242. Plutonium is used as a nuclear fuel, to produce radioisotopes for research, in radionuclide batteries for pacemakers, and as the agent of fission in nuclear weapons.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.Radioimmunotherapy: Radiotherapy where cytotoxic radionuclides are linked to antibodies in order to deliver toxins directly to tumor targets. Therapy with targeted radiation rather than antibody-targeted toxins (IMMUNOTOXINS) has the advantage that adjacent tumor cells, which lack the appropriate antigenic determinants, can be destroyed by radiation cross-fire. Radioimmunotherapy is sometimes called targeted radiotherapy, but this latter term can also refer to radionuclides linked to non-immune molecules (see RADIOTHERAPY).Food Contamination, RadioactiveRadiation 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).Indium Radioisotopes: Unstable isotopes of indium that decay or disintegrate emitting radiation. In atoms with atomic weights 106-112, 113m, 114, and 116-124 are radioactive indium isotopes.Iodine Radioisotopes: Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.Yttrium Radioisotopes: Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.Beta Particles: High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.Radiation Monitoring: The observation, either continuously or at intervals, of the levels of radiation in a given area, generally for the purpose of assuring that they have not exceeded prescribed amounts or, in case of radiation already present in the area, assuring that the levels have returned to those meeting acceptable safety standards.Gold Radioisotopes: Unstable isotopes of gold that decay or disintegrate emitting radiation. Au 185-196, 198-201, and 203 are radioactive gold isotopes.Gallium Radioisotopes: Unstable isotopes of gallium that decay or disintegrate emitting radiation. Ga atoms with atomic weights 63-68, 70 and 72-76 are radioactive gallium isotopes.Holmium: Holmium. An element of the rare earth family of metals. It has the atomic symbol Ho, atomic number 67, and atomic weight 164.93.Astatine: Astatine. A radioactive halogen with the atomic symbol At, atomic number 85, and atomic weight 210. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism.Spectrometry, Gamma: Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Radioactive Fallout: The material that descends to the earth or water well beyond the site of a surface or subsurface nuclear explosion. (McGraw-Hill Dictionary of Chemical and Technical Terms, 4th ed)Radioactive Pollutants: Radioactive substances which act as pollutants. They include chemicals whose radiation is released via radioactive waste, nuclear accidents, fallout from nuclear explosions, and the like.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.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.Radioactive Waste: Liquid, solid, or gaseous waste resulting from mining of radioactive ore, production of reactor fuel materials, reactor operation, processing of irradiated reactor fuels, and related operations, and from use of radioactive materials in research, industry, and medicine. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Polonium: Polonium. A radioactive element that is a member of the chalcogen family. It has the atomic symbol Po, atomic number 84, and the atomic weight of the isotope with the longest half-life (209Po) is 208.98. It decays by alpha-emission.Lutetium: Lutetium. An element of the rare earth family of metals. It has the atomic symbol Lu, atomic number 71, and atomic weight 175.Actinium: Actinium. A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, atomic number 89, and atomic weight 227.0278. Its principal isotope is 227 and decays primarily by beta-emission.Technetium Tc 99m Aggregated Albumin: A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in cardiovascular and cerebral circulation.Hybridization, Genetic: The genetic process of crossbreeding between genetically dissimilar parents to produce a hybrid.Technetium Tc 99m Medronate: A gamma-emitting radionuclide imaging agent used primarily in skeletal scintigraphy. Because of its absorption by a variety of tumors, it is useful for the detection of neoplasms.Thorium: Thorium. A radioactive element of the actinide series of metals. It has an atomic symbol Th, atomic number 90, and atomic weight 232.04. It is used as fuel in nuclear reactors to produce fissionable uranium isotopes. Because of its radioopacity, various thorium compounds are used to facilitate visualization in roentgenography.Technetium Tc 99m Sulfur Colloid: A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.Technetium Compounds: Inorganic compounds that contain TECHNETIUM as an integral part of the molecule. Technetium 99m (m=metastable) is an isotope of technetium that has a half-life of about 6 hours. Technetium 99, which has a half-life of 210,000 years, is a decay product of technetium 99m.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)Potassium Radioisotopes: Unstable isotopes of potassium that decay or disintegrate emitting radiation. K atoms with atomic weights 37, 38, 40, and 42-45 are radioactive potassium isotopes.Radiobiology: Study of the scientific principles, mechanisms, and effects of the interaction of ionizing radiation with living matter. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Copper Radioisotopes: Unstable isotopes of copper that decay or disintegrate emitting radiation. Cu atoms with atomic weights 58-62, 64, and 66-68 are radioactive copper isotopes.Cineangiography: Motion pictures of the passage of contrast medium through blood vessels.Heterocyclic Compounds, 1-Ring: A class of organic compounds containing a ring structure made up of more than one kind of atom, usually carbon plus another atom. The ring structure can be aromatic or nonaromatic.Radioactive Hazard Release: Uncontrolled release of radioactive material from its containment. This either threatens to, or does, cause exposure to a radioactive hazard. Such an incident may occur accidentally or deliberately.Octreotide: A potent, long-acting synthetic SOMATOSTATIN octapeptide analog that inhibits secretion of GROWTH HORMONE and is used to treat hormone-secreting tumors; DIABETES MELLITUS; HYPOTENSION, ORTHOSTATIC; HYPERINSULINISM; hypergastrinemia; and small bowel fistula.Tin Compounds: Inorganic compounds that contain tin as an integral part of the molecule.Heart: The hollow, muscular organ that maintains the circulation of the blood.Radioisotope Renography: Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is taken up and excreted by the kidneys.Indium: A metallic element, atomic number 49, atomic weight 114.82, symbol In. It is named from its blue line in the spectrum. (From Dorland, 28th ed)Samarium: Samarium. An element of the rare earth family of metals. It has the atomic symbol Sm, atomic number 62, and atomic weight 150.36. The oxide is used in the control rods of some nuclear reactors.Angiocardiography: Radiography of the heart and great vessels after injection of a contrast medium.Gamma Cameras: Electronic instruments that produce photographs or cathode-ray tube images of the gamma-ray emissions from organs containing radionuclide tracers.Technetium Tc 99m Pentetate: A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.Americium: Americium. A completely man-made radioactive actinide with atomic symbol Am, atomic number 95, and atomic weight 243. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.Organotechnetium Compounds: Organic compounds that contain technetium as an integral part of the molecule. These compounds are often used as radionuclide imaging agents.Nuclear Medicine: A specialty field of radiology concerned with diagnostic, therapeutic, and investigative use of radioactive compounds in a pharmaceutical form.Thallium: A heavy, bluish white metal, atomic number 81, atomic weight [204.382; 204.385], symbol Tl.Isotope Labeling: Techniques for labeling a substance with a stable or radioactive isotope. It is not used for articles involving labeled substances unless the methods of labeling are substantively discussed. Tracers that may be labeled include chemical substances, cells, or microorganisms.Fukushima Nuclear Accident: Nuclear power accident that occurred following the Tohoku-Kanto earthquake of March 11, 2011 in the northern region of Japan.Radium: Radium. A radioactive element of the alkaline earth series of metals. It has the atomic symbol Ra, atomic number 88, and atomic weight 226. Radium is the product of the disintegration of uranium and is present in pitchblende and all ores containing uranium. It is used clinically as a source of beta and gamma-rays in radiotherapy, particularly BRACHYTHERAPY.Nuclear Reactors: Devices containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled, self-sustaining NUCLEAR FISSION chain reaction. They are also known as atomic piles, atomic reactors, fission reactors, and nuclear piles, although such names are deprecated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Radiotherapy Dosage: The total amount of radiation absorbed by tissues as a result of radiotherapy.Dose-Response Relationship, Radiation: The relationship between the dose of administered radiation and the response of the organism or tissue to the radiation.Tissue Distribution: Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.Body Burden: The total amount of a chemical, metal or radioactive substance present at any time after absorption in the body of man or animal.Neuroendocrine Tumors: Tumors whose cells possess secretory granules and originate from the neuroectoderm, i.e., the cells of the ectoblast or epiblast that program the neuroendocrine system. Common properties across most neuroendocrine tumors include ectopic hormone production (often via APUD CELLS), the presence of tumor-associated antigens, and isozyme composition.3-Iodobenzylguanidine: A guanidine analog with specific affinity for tissues of the sympathetic nervous system and related tumors. The radiolabeled forms are used as antineoplastic agents and radioactive imaging agents. (Merck Index, 12th ed) MIBG serves as a neuron-blocking agent which has a strong affinity for, and retention in, the adrenal medulla and also inhibits ADP-ribosyltransferase.Technetium Tc 99m Sestamibi: A technetium imaging agent used to reveal blood-starved cardiac tissue during a heart attack.Whole-Body Counting: Measurement of radioactivity in the entire human body.Cardiac Volume: The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.Uranium: Uranium. A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.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.Relative Biological Effectiveness: The ratio of radiation dosages required to produce identical change based on a formula comparing other types of radiation with that of gamma or roentgen rays.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.19-Iodocholesterol: 19-Iodocholest-5-en-3 beta-ol. A cholesterol derivative usually substituted with radioactive iodine in the 19 position. The compound is an adrenal cortex scanning agent used in the assessment of patients suspected of having Cushing's syndrome, hyperaldosteronism, pheochromocytoma and adrenal remnants following total adrenalectomy.Power Plants: Units that convert some other form of energy into electrical energy.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.Radioimmunodetection: Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera.Iridium: A metallic element with the atomic symbol Ir, atomic number 77, and atomic weight 192.22.Technology, Radiologic: The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.Electrons: Stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS.Air Pollutants, Radioactive: Pollutants, present in air, which exhibit radioactivity.Nuclear Power Plants: Facilities that convert NUCLEAR ENERGY into electrical energy.Technetium Tc 99m Pyrophosphate: A radionuclide imaging agent used primarily in scintigraphy or tomography of the heart to evaluate the extent of the necrotic myocardial process. It has also been used in noninvasive tests for the distribution of organ involvement in different types of amyloidosis and for the evaluation of muscle necrosis in the extremities.Bismuth: A metallic element that has the atomic symbol Bi, atomic number 83 and atomic weight 208.98.Technetium Tc 99m Mertiatide: A technetium diagnostic aid used in renal function determination.Tin Radioisotopes: Unstable isotopes of tin that decay or disintegrate emitting radiation. Sn atoms with atomic weights 108-111, 113, 120-121, 123 and 125-128 are tin radioisotopes.Lead Radioisotopes: Unstable isotopes of lead that decay or disintegrate emitting radiation. Pb atoms with atomic weights 194-203, 205, and 209-214 are radioactive lead isotopes.Receptors, Somatostatin: Cell surface proteins that bind somatostatin and trigger intracellular changes which influence the behavior of cells. Somatostatin is a hypothalamic hormone, a pancreatic hormone, and a central and peripheral neurotransmitter. Activated somatostatin receptors on pituitary cells inhibit the release of growth hormone; those on endocrine and gastrointestinal cells regulate the absorption and utilization of nutrients; and those on neurons mediate somatostatin's role as a neurotransmitter.Thallium Radioisotopes: Unstable isotopes of thallium that decay or disintegrate emitting radiation. Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes.Micronesia: The collective name for islands of the Pacific Ocean east of the Philippines, including the Mariana, PALAU, Caroline, Marshall, and Kiribati Islands. (From Webster's New Geographical Dictionary, 1988, p761 & Room, Brewer's Dictionary of Names, 1992, p350)Imino AcidsExercise Test: Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.Nuclear Fission: Nuclear reaction in which the nucleus of a heavy atom such as uranium or plutonium is split into two approximately equal parts by a neutron, charged particle, or photon.Neoplasms: New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.Tantalum: Tantalum. A rare metallic element, atomic number 73, atomic weight 180.948, symbol Ta. It is a noncorrosive and malleable metal that has been used for plates or disks to replace cranial defects, for wire sutures, and for making prosthetic devices. (Dorland, 28th ed)Coronary Disease: An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Heart Function Tests: Examinations used to diagnose and treat heart conditions.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)Cobalt Radioisotopes: Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.Cardiac Output: The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).Time Factors: Elements of limited time intervals, contributing to particular results or situations.Ytterbium: Ytterbium. An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.Tomography, Emission-Computed: Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image.ComputersChernobyl Nuclear Accident: April 25th -26th, 1986 nuclear power accident that occurred at Chernobyl in the former USSR (Ukraine) located 80 miles north of Kiev.Receptors, Peptide: Cell surface receptors that bind peptide messengers with high affinity and regulate intracellular signals which influence the behavior of cells.Particle Accelerators: Devices which accelerate electrically charged atomic or subatomic particles, such as electrons, protons or ions, to high velocities so they have high kinetic energy.Nuclear Weapons: A weapon that derives its destructive force from nuclear fission and/or fusion.Heart Diseases: Pathological conditions involving the HEART including its structural and functional abnormalities.Gastric Emptying: The evacuation of food from the stomach into the duodenum.Radiation ProtectionRadiochemistry: The study of the chemical and physical phenomena of radioactive substances.Radiotherapy: The use of IONIZING RADIATION to treat malignant NEOPLASMS and some benign conditions.Tin: A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.Hybrid Vigor: The adaptive superiority of the heterozygous GENOTYPE with respect to one or more characters in comparison with the corresponding HOMOZYGOTE.Actinoid Series Elements: A series of radioactive elements from ACTINIUM, atomic number 89, to and including LAWRENCIUM, atomic number 103.Prenalterol: A partial adrenergic agonist with functional beta 1-receptor specificity and inotropic effect. It is effective in the treatment of acute CARDIAC FAILURE, postmyocardial infarction low-output syndrome, SHOCK, and reducing ORTHOSTATIC HYPOTENSION in the SHY-RAGER SYNDROME.Antibodies, Monoclonal: Antibodies produced by a single clone of cells.Cerebrospinal Fluid Otorrhea: Discharge of cerebrospinal fluid through the external auditory meatus or through the eustachian tube into the nasopharynx. This is usually associated with CRANIOCEREBRAL TRAUMA (e.g., SKULL FRACTURE involving the TEMPORAL BONE;), NEUROSURGICAL PROCEDURES; or other conditions, but may rarely occur spontaneously. (From Am J Otol 1995 Nov;16(6):765-71)Neoplasms, Radiation-Induced: Tumors, cancer or other neoplasms produced by exposure to ionizing or non-ionizing radiation.Water Pollution, RadioactiveZinc Radioisotopes: Unstable isotopes of zinc that decay or disintegrate emitting radiation. Zn atoms with atomic weights 60-63, 65, 69, 71, and 72 are radioactive zinc isotopes.IodobenzenesBronchopulmonary Sequestration: A developmental anomaly in which a mass of nonfunctioning lung tissue lacks normal connection with the tracheobroncheal tree and receives an anomalous blood supply originating from the descending thoracic or abdominal aorta. The mass may be extralobar, i.e., completely separated from normally connected lung, or intralobar, i.e., partly surrounded by normal lung.Dye Dilution Technique: Method for assessing flow through a system by injection of a known quantity of dye into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)Cisterna Magna: One of three principal openings in the SUBARACHNOID SPACE. They are also known as cerebellomedullary cistern, and collectively as cisterns.Technetium Tc 99m Lidofenin: A nontoxic radiopharmaceutical that is used in RADIONUCLIDE IMAGING for the clinical evaluation of hepatobiliary disorders in humans.Methods: A series of steps taken in order to conduct research.Models, Structural: A representation, generally small in scale, to show the structure, construction, or appearance of something. (From Random House Unabridged Dictionary, 2d ed)Scintillation Counting: Detection and counting of scintillations produced in a fluorescent material by ionizing radiation.Immunoconjugates: Combinations of diagnostic or therapeutic substances linked with specific immune substances such as IMMUNOGLOBULINS; MONOCLONAL ANTIBODIES; or ANTIGENS. Often the diagnostic or therapeutic substance is a radionuclide. These conjugates are useful tools for specific targeting of DRUGS and RADIOISOTOPES in the CHEMOTHERAPY and RADIOIMMUNOTHERAPY of certain cancers.Nuclear Physics: The study of the characteristics, behavior, and internal structures of the atomic nucleus and its interactions with other nuclei. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Streptavidin: A 60-kDa extracellular protein of Streptomyces avidinii with four high-affinity biotin binding sites. Unlike AVIDIN, streptavidin has a near neutral isoelectric point and is free of carbohydrate side chains.UkraineAngiography: Radiography of blood vessels after injection of a contrast medium.Elementary Particles: Individual components of atoms, usually subatomic; subnuclear particles are usually detected only when the atomic nucleus decays and then only transiently, as most of them are unstable, often yielding pure energy without substance, i.e., radiation.Monte Carlo Method: In statistics, a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer. The name alludes to the randomness characteristic of the games of chance played at the gambling casinos in Monte Carlo. (From Random House Unabridged Dictionary, 2d ed, 1993)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)Evaluation Studies as Topic: Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.Gallium: A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.Half-Life: The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity.Ethmoid Bone: A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths.Cerebrospinal Fluid Rhinorrhea: Discharge of cerebrospinal fluid through the nose. Common etiologies include trauma, neoplasms, and prior surgery, although the condition may occur spontaneously. (Otolaryngol Head Neck Surg 1997 Apr;116(4):442-9)Background Radiation: Radiation from sources other than the source of interest. It is due to cosmic rays and natural radioactivity in the environment.Krypton: A noble gas that is found in the atmosphere. It has the atomic symbol Kr, atomic number 36, atomic weight 83.80, and has been used in electric bulbs.Glomus Jugulare Tumor: A paraganglioma involving the glomus jugulare, a microscopic collection of chemoreceptor tissue in the adventitia of the bulb of the jugular vein. It may cause paralysis of the vocal cords, attacks of dizziness, blackouts, and nystagmus. It is not resectable but radiation therapy is effective. It regresses slowly, but permanent control is regularly achieved. (From Dorland, 27th ed; Stedman, 25th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, pp1603-4)Germanium: A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.Metabolic Clearance Rate: Volume of biological fluid completely cleared of drug metabolites as measured in unit time. Elimination occurs as a result of metabolic processes in the kidney, liver, saliva, sweat, intestine, heart, brain, or other site.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.Chelating Agents: Chemicals that bind to and remove ions from solutions. Many chelating agents function through the formation of COORDINATION COMPLEXES with METALS.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.Drug Delivery Systems: Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity.Spermatic Cord Torsion: The twisting of the SPERMATIC CORD due to an anatomical abnormality that left the TESTIS mobile and dangling in the SCROTUM. The initial effect of testicular torsion is obstruction of venous return. Depending on the duration and degree of cord rotation, testicular symptoms range from EDEMA to interrupted arterial flow and testicular pain. If blood flow to testis is absent for 4 to 6 h, SPERMATOGENESIS may be permanently lost.Myocardial Contraction: Contractile activity of the MYOCARDIUM.Radiotherapy, Computer-Assisted: Computer systems or programs used in accurate computations for providing radiation dosage treatment to patients.Iodohippuric Acid: An iodine-containing compound used in pyelography as a radiopaque medium. If labeled with radioiodine, it can be used for studies of renal function.Fast Neutrons: Neutrons, the energy of which exceeds some arbitrary level, usually around one million electron volts.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.Heart Aneurysm: A localized bulging or dilatation in the muscle wall of a heart (MYOCARDIUM), usually in the LEFT VENTRICLE. Blood-filled aneurysms are dangerous because they may burst. Fibrous aneurysms interfere with the heart function through the loss of contractility. True aneurysm is bound by the vessel wall or cardiac wall. False aneurysms are HEMATOMA caused by myocardial rupture.Krypton Radioisotopes: Unstable isotopes of krypton that decay or disintegrate emitting radiation. Kr atoms with atomic weights 74-77, 79, 81, 85, and 87-94 are radioactive krypton isotopes.Vesico-Ureteral Reflux: Retrograde flow of urine from the URINARY BLADDER into the URETER. This is often due to incompetence of the vesicoureteral valve leading to ascending bacterial infection into the KIDNEY.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.Bone Neoplasms: Tumors or cancer located in bone tissue or specific BONES.Echocardiography: Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.Chimera: An individual that contains cell populations derived from different zygotes.Electrocardiography: Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.Radiation Hybrid Mapping: A method for ordering genetic loci along CHROMOSOMES. The method involves fusing irradiated donor cells with host cells from another species. Following cell fusion, fragments of DNA from the irradiated cells become integrated into the chromosomes of the host cells. Molecular probing of DNA obtained from the fused cells is used to determine if two or more genetic loci are located within the same fragment of donor cell DNA.Physical Exertion: Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.Nuclear Warfare: Warfare involving the use of NUCLEAR WEAPONS.Osmium: Osmium. A very hard, gray, toxic, and nearly infusible metal element, atomic number 76, atomic weight 190.2, symbol Os. (From Dorland, 28th ed)Diphosphates: Inorganic salts of phosphoric acid that contain two phosphate groups.Bone and Bones: A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.Tellurium: Tellurium. An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression.Lanthanoid Series Elements: Elements of the lanthanoid series including atomic number 57 (LANTHANUM) through atomic number 71 (LUTETIUM).Phosphorus Radioisotopes: Unstable isotopes of phosphorus that decay or disintegrate emitting radiation. P atoms with atomic weights 28-34 except 31 are radioactive phosphorus isotopes.Technetium Tc 99m Disofenin: A radiopharmaceutical used extensively in cholescintigraphy for the evaluation of hepatobiliary diseases. (From Int Jrnl Rad Appl Inst 1992;43(9):1061-4)Myocardial Infarction: NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).Radiotherapy Planning, Computer-Assisted: Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy.Antibodies, Bispecific: Antibodies, often monoclonal, in which the two antigen-binding sites are specific for separate ANTIGENIC DETERMINANTS. They are artificial antibodies produced by chemical crosslinking, fusion of HYBRIDOMA cells, or by molecular genetic techniques. They function as the main mediators of targeted cellular cytotoxicity and have been shown to be efficient in the targeting of drugs, toxins, radiolabeled haptens, and effector cells to diseased tissue, primarily tumors.Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.Mice, Nude: Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses.Pentanones: 5-carbon straight-chain or branched-chain ketones.Erythrocytes: Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.Decontamination: The removal of contaminating material, such as radioactive materials, biological materials, or CHEMICAL WARFARE AGENTS, from a person or object.Nuclear Energy: Energy released by nuclear fission or nuclear fusion.Infusions, Intralesional: The administration of medication or fluid directly into localized lesions, by means of gravity flow or INFUSION PUMPS.Cardiac Catheterization: Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.Crosses, Genetic: Deliberate breeding of two different individuals that results in offspring that carry part of the genetic material of each parent. The parent organisms must be genetically compatible and may be from different varieties or closely related species.

*Bone

Radionuclide and hybrid bone imaging. Berlin: Springer. pp. 29-57. ISBN 978-3-642-02399-6.. ... Bones are then often imaged, called radiography. This might include ultrasound X-ray, CT scan, MRI scan and other imaging such ... 2014). "On estimating the directionality distribution in pedicle trabecular bone from micro-CT images". Journal of ... radiologists in interpreting the findings on imaging, and pathologists in investigating the cause of the disease, and family ...

*Bone scintigraphy

Radionuclide and hybrid bone imaging. Berlin: Springer. p. 345. doi:10.1007/978-3-642-02400-9_12. ISBN 978-3-642-02399-6. ... In the 1950s and 1960s Calcium-45 was investigated, but as a beta emitter proved difficult to image. Imaging of positron and ... In a single phase protocol (skeletal imaging alone), which will primarily highlight osteoblasts, images are usually acquired 2- ... images. In order to view small lesions SPECT imaging technique may be preferred over planar scintigraphy. ...

*Gallium scan

Radionuclide and hybrid bone imaging. Berlin: Springer. pp. 523-559. doi:10.1007/978-3-642-02400-9_20. ISBN 978-3-642-02399-6. ... Each set of images takes 30-60 minutes, depending on the size of the area being imaged. The resulting image will have bright ... Single photon emission computed tomography (SPECT) images may also be acquired. In some imaging centers, SPECT images may be ... Love, C; Palestro, CJ (June 2004). "Radionuclide imaging of infection". Journal of Nuclear Medicine Technology. 32 (2): 47-57; ...

*TRIUMF

The Functional Imaging Program at the BCCA is a collaboration among the agency, TRIUMF, UBC, and the BC Children's Hospital. ... the positron emitting radionuclide used in production of 18F-fluorodeoxyglucose (FDG). FDG, as a marker of glucose metabolism, ... through the BC Provincial Health Services Authority Emerging Technologies Fund allowed purchase of the province's first hybrid ... PET is more sensitive than any other human imaging method, such as MRI or CT, especially for the detection of cancer. The PET ...

*Nanogel

... s composed of dextran have been developed for imaging tumor-associated macrophages with radionuclides and targeting the ... "Nanogel-quantum dot hybrid nanoparticles for live cell imaging". Biochemical and Biophysical Research Communications. 331 (4): ... Potential applications of nanogels include drug delivery agents, contrast agents for medical imaging, nanoactuators, and ... "Nanostructured hybrid hydrogels prepared by a combination of atom transfer radical polymerization and free radical ...

*Nuclear medicine

In some centers, the nuclear medicine scans can be superimposed, using software or hybrid cameras, on images from modalities ... 2D: Scintigraphy ("scint") is the use of internal radionuclides to create two-dimensional images. A nuclear medicine whole body ... The end result of the nuclear medicine imaging process is a "dataset" comprising one or more images. In multi-image datasets ... This practice is often referred to as image fusion or co-registration, for example SPECT/CT and PET/CT. The fusion imaging ...

*Cho Zang-hee

A Hybrid PET-MRI: An Integrated Molecular-Genetic Imaging System with HRRT-PET and 7.0 T-MRI. IJIST., Vol. 17, 252-265, 2007 12 ... and Eriksson, L., "Circular ring transverse axial positron camera for 3-D reconstruction of radionuclides distribution", IEEE ... More recently, Cho developed the first PET-MRI fusion molecular imaging device for neuro-molecular imaging. B.Sc, Electronics, ... on Medical Imaging, IEEE Press, New York, NY, 1985-93 4. Steering Committee : IEEE Trans. on Nuclear Science, IEEE Press, New ...

*Sentinel lymph node

Scintigraphic imaging is usually started within 5 minutes of injection and the node appears from 5 min to 1 hour. This is ... ISBN 978-1-4377-2015-0. Sherif, Amir; Garske, Ulrike; Torre, Manuel de La; Thörn, Magnus (2006). "Hybrid SPECT-CT: An ... The injected substance, filtered sulfur colloid, is tagged with the radionuclide technetium-99m. The injection protocols differ ... Camera for Image-Guided Laparoscopic Sentinel Node Biopsy in Testicular Cancer". Journal of Nuclear Medicine. 52 (4): 551-4. ...

*Computational human phantom

Gibb's work started with X-ray images, not CT or MRI images, for the reconstruction of a human phantom which was used for ... Hybrid computational phantoms of the male and female newborn patient: NURBS-based whole-body models, Phys Med Biol, 52, 3309, ... 2010). "Statistical construction of a Japanese male liver phantom for internal radionuclide dosimetry." Radiat Prot Dosimetry. ... First, they must obtain the raw data, from CT scans, MRI imaging, or direct imaging through photography. Second, the components ...

*Positron emission tomography

"Magnetic Resonance-Based Attenuation Correction for PET/MR Hybrid Imaging Using Continuous Valued Attenuation Maps". ... Radionuclides used in PET scanning are typically isotopes with short half-lives [2] such as carbon-11 (~20 min), nitrogen-13 (~ ... Small animal imaging[edit]. PET technology for small animal imaging: A miniature PE tomograph has been constructed that is ... Musculo-skeletal imaging[edit]. Musculoskeletal imaging: PET has been shown to be a feasible technique for studying skeletal ...

*Helianthus annuus

In today's market, most of the sunflower seeds provided or grown by farmers are hybrids. Hybrids or hybridized sunflowers are ... The town's coat of arms includes an image of a sunflower ever since. Among the Zuni people, the fresh or dried root is chewed ... and used in rhizofiltration to neutralize radionuclides and other toxic ingredients and harmful bacteria from water. They were ... By doing so, new genetic recombinations are obtained ultimately leading to the production of new hybrid species. These hybrid ...

*Rubidium-82

"Diagnostic Accuracy of Rubidium-82 Myocardial Perfusion Imaging With Hybrid Positron Emission Tomography/Computed Tomography in ... In 1959, preclinical trials showed in dogs that myocardial uptake of this radionuclide was directly proportional to myocardial ... This is especially important as the use of myocardial imaging increases in the medical field. When it comes to patients, 82Rb ... Recently it has been shown that neuroendocrine tumor metastasis can be imaged with 82Rb due to its ability to quantify ...

*Positron emission tomography

"Magnetic Resonance-Based Attenuation Correction for PET/MR Hybrid Imaging Using Continuous Valued Attenuation Maps". ... Radionuclides used in PET scanning are typically isotopes with short half-lives[3] such as carbon-11 (~20 min), nitrogen-13 (~ ... Small animal imagingEdit. PET technology for small animal imaging: A miniature PE tomograph has been constructed that is small ... PET imaging is best performed using a dedicated PET scanner. It is also possible to acquire PET images using a conventional ...

*Ceramic

Details of these processes are described in the two books listed below.[which?] A few methods use a hybrid between the two ... Frequency selective optical filters can be utilized to alter or enhance the brightness and contrast of a digital image. Guided ... Nuclear waste long-lived radionuclides such as actinides are immobilised using chemically-durable crystalline materials based ...

*Dawn (spacecraft)

Images taken from Dawn of Ceres after January 26, 2015, exceeded the resolution of comparable images from the Hubble Space ... Radionuclide dating of pieces of meteorites thought to come from Vesta suggests that Vesta differentiated quickly, in three ... The Dawn team stated that they would orient the probe using a "hybrid" mode utilizing both reaction wheels and ion thrusters. ... It also imaged in stereo to resolve the surface in 3D. On October 23, 2015, Dawn began a two-month spiral toward Ceres to ...

*European Spallation Source

Engineering and Imaging: BEER (Engineering Diffractometer) ODIN (Multi-Purpose Imaging) ISIS neutron source - Europe's only ... They are Diffraction: DREAM (Bispectral Powder Diffractometer) HEIMDAL (Hybrid Diffractometer) MAGiC (Magnetism Single Crystal ... for the Modelling of Transport Processes of Radionuclides in Groundwater (PDF; 9,4 MB) JÜL-Berichte, Forschungszentrum Jülich, ... When the ISIS neutron source was built in England in 1985, its radical success in producing indirect images of molecular ...

*Nuclear reactor

Hybrid nuclear fusion. Would use the neutrons emitted by fusion to fission a blanket of fertile material, like U-238 or Th-232 ... "Radionuclides in Groundwater". U.S. NRC. nrc.gov. Retrieved 2 October 2017. The Database on Nuclear Power Reactors - IAEA ... used for imaging and medical treatment. Production of materials for nuclear weapons such as weapons-grade plutonium Providing a ...

*Boeing

Hybrid electric propulsion has the potential to shorten takeoff distance and reduce noise. In both 2008 and 2009, Boeing was ... The study found that air, soil, groundwater, and surface water at the site all contained radionuclides, toxic metals, and ... and to rehabilitate its image. However, the plane's fate was sealed by the changes in the commercial aviation market following ... For NASA's N+3 future airliner program, Boeing has determined that hybrid electric engine technology is by far the best choice ...

*Nuclear reactor

Hybrid nuclear fusion. Would use the neutrons emitted by fusion to fission a blanket of fertile material, like U-238 or Th-232 ... "Radionuclides in Groundwater". U.S. NRC. nrc.gov. Retrieved 2 October 2017.. ... used for imaging and medical treatment. ...

*Positron emission tomography

"Magnetic Resonance-Based Attenuation Correction for PET/MR Hybrid Imaging Using Continuous Valued Attenuation Maps". ... The minimization of radiation dose to the subject is an attractive feature of the use of short-lived radionuclides. Besides its ... PET imaging is best performed using a dedicated PET scanner. However, it is possible to acquire PET images using a conventional ... Imaging infections with molecular imaging technologies can improve diagnosis and treatment follow-up. PET has been widely used ...

*Vascular surgery

... savings from shorter hospital stays and less morbidity are considerable but are somewhat balanced by the high cost of imaging ... Hybrid arch debranching Thoracic endovascular aneurysm repair. Thoracic outlet syndrome. Surgical decompression. ...

*Coronary artery disease

... stress cardiac imaging, and/or advanced non-invasive imaging is not recommended on individuals who are exhibiting no symptoms ... Hybrid coronary revascularization has also been shown to be a safe and feasible procedure that may offer some advantages over ... using uptake of radionuclide by the heart muscle). If part of the heart seems to receive an insufficient blood supply, coronary ... Magnetic resonance imaging (MRI). The diagnosis of coronary disease underlying particular symptoms depends largely on the ...
Definition of scintillation camera in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is scintillation camera? Meaning of scintillation camera as a legal term. What does scintillation camera mean in law?
Radionuclide angiography is an area of nuclear medicine which specialises in imaging to show the functionality of the right and left ventricles of the heart, thus allowing informed diagnostic intervention in heart failure. It involves use of a radiopharmaceutical, injected into a patient, and a gamma camera for acquisition. A MUGA scan (multigated acquisition) involves an acquisition triggered (gated) at different points of the cardiac cycle. MUGA scanning is also called equilibrium radionuclide angiocardiography, radionuclide ventriculography (RNVG), or gated blood pool imaging, as well as SYMA scanning (synchronized multigated acquisition scanning). This mode of imaging uniquely provides a cine type of image of the beating heart, and allows the interpreter to determine the efficiency of the individual ...
We consider the time dependent neutron diffusion equation for one energy group in cylinder coordinates, assuming translational symmetry along the cylinder axis. This problem for a specific energy group is solved analytically applying the Hankel transform in the radial coordinate r. Our special interest rests in the build-up factor for a time dependent linear neutron source aligned with the cylinder axis, which in the limit of zero decay constant reproduces also the static case. The new approach to solve the diffusion equation by integral transform technique is presented and results for several parameter sets and truncation in the solution for the flux and build-up factor are shown and found to be compatible to those of literature [1,2].
OBJECTIVE--To determine whether echocardiography and radionuclide angiography give comparable results when the left ventricular ejection fraction is measured early after myocardial infarction and thus whether, irrespective of the method used, a single value for the ejection fraction could be used as a guide for starting treatment with an angiotensin converting enzyme inhibitor. DESIGN--Prospective comparison of measurement of left ventricular ejection fraction by echocardiography and radionuclide angiography. SETTING--Coronary care units of two university teaching hospitals in Glasgow. PATIENTS--99 patients studied within 36 hours of acute myocardial infarction. OUTCOME MEASURES--Left ventricular ejection fraction assessed by echocardiography and radionuclide angiography. RESULTS--70 (77%) of the 99 patients had ejection fraction measured by both echocardiographic and ...
Patients with breast cancer scheduled to undergo sentinel lymph node mapping and biopsy will be randomly assigned to one of four treatment groups:. I: (Standard of Care at WRAMC): Application of L-M-X topical anesthetic cream 4% to the breast within one hour of sub-areaolar injection of 4 ml 99mTc-sulfur colloid (1 mCi in normal saline). II. Sub-areolar injection of 4 ml pH-adjusted 99mTc-sulfur colloid (1 mCi in sodium bicarbonate). III. Sub-areolar injection of 4 ml pH-adjusted 99mTc-sulfur colloid (1 mCi in 1% Lidocaine). IV. Sub-areolar injection of 4 ml pH-adjusted 99mTc-sulfur colloid (1 mCi in sodium bicarbonate + 1% Lidocaine). The primary study outcome is pain, which will be evaluated for each study group before, and after radiocolloid injection utilizing a standardized 10-point Likert scale, the Wong-Baker FACES Pain Rating Scale, and the McGill Pain Questionnaire. Physician appraisal of patient pain (Wong-Baker FACES Pain Rating Scale) will be estimated during the radiocolloid ...
A method was devised to measure gray and white matter cerebral blood flow simultaneously in multiple regions of the brain using 133Xenon and a multiple-crystal scintillation camera. Following magnification cerebral arteriography, 133Xe was injected into the internal carotid artery and the washout of tracer was monitored with a scintillation camera which consists of 294 individually collimated NaI (TI) crystals. These data, obtained from each crystal overlying the brain, were processed by a weighted least-squares nonlinear regression technique. The blood flow rates of the rapid and slow compartments were calculated by the Kety-Schmidt formula along with 95% confidence limits for each measurement.. In four patients, local increases or decreases in regional cerebral flow were correlated with areas of pathology. In one patient with a cerebral arteriovenous malformation, regions of local shunting of tracer were identified. Application of a three-compartment analysis to these curves permitted ...
Article Comprehensive study of energy absorption and exposure build-up factors for concrete shielding in photon energy range 0.015-15 MeV up to 40 mfp penetration depth: dependency of density, chemical elements, photon energy. Gamma ray build-up fact...
2017 Chronic Dry Eye Nutrition Contacts Dry Eye Relief A Doctor Weighs In On Nutrition And Dry Eye Blog - www.eyepromise.com. The examples below is actually an index of 2017 Blepharitis Dry Eye Nutrition Medicine Images applications that may can be utilized perspective clinical professionals to reduce the symptoms from arid little brown eyes.An individuals eye doctor may well recommend solely one of these simple arid perspective applications or maybe the variety of applications, according to the factors together with severity of your trouble.. ...
February 2, 2010 - Two protocols for reduced-dose cardiac imaging, without compromising image quality, may help enhance the performance of gamma cameras by shortening acquisition times, enabling reduced radiopharmaceutical doses and increasing image resolution.. Nuclear medicine image reconstruction software maker UltraSPECT said its imaging protocols minimize radiation exposure to patients and staff, in addition to mitigating the impact of the technetium-99 (Tc-99m ) isotope shortage. The companys FDA-cleared and CE mark-approved Xpress.Cardiac and Xpress3.Cardiac products allow the utilization of lower dose imaging protocols with no compromise in imaging acquisition times and outcomes. UltraSPECT products feature connectivity to the imaging systems of all three major nuclear medicine camera manufacturers, supporting most existing camera ...
Scintillography is mainly used in scintillation cameras in experimental physics. For example, huge neutrino detection underground tanks filled with tetrachloroethylene are surrounded by arrays of photo detectors in order to capture the extremely rare event of a collision between the fluids atoms and a neutrino. Another extensive use of scintillography is in medical imaging techniques which use gamma ray detectors called gamma cameras. Detectors coated with materials which scintillate when subjected to gamma rays are scanned with optical photon detectors and scintillation counters. The subjects are injected with special radionuclides which irradiate in the gamma range inside the region of interest, such as the heart or the brain. A special type of gamma camera is the SPECT (Single Photon Emission Computed Tomography). Another medical scintillography technique, the Positron-emission tomography (PET), which uses the scintillations provoked by ...
Nuclear imaging looks at physiological processes rather than at anatomical structures.. In nuclear imaging, short-lived radiopharmaceuticals (radioactive drugs that emit gamma rays and that are attracted to the organ of study) are injected into a patients bloodstream. The nuclear camera takes an image of the pharmaceutical as it enters and concentrates in these tissues or organs.. By tracing this blood flow activity, the resulting nuclear medicine image tells physicians about the biological activity of the organ or the vascular system that nourishes it.. Nuclear Medicine has a wide variety of uses, including the diagnosis of cancer, studying gall bladder disease, circulatory problems, detecting thyroid, liver, and kidney malfunction, and other abnormalities in bones, tissues, and organs.. ...
Radionuclide Angiogram, Resting and Exercise What is a resting and exercise radionuclide angiogram (RNA)? A resting and exercise radionuclide angiogram (RNA) is a type of nuclear medicine test. This means that a tiny amount of a radioactive substance, called a tracer, is used to help show the tissue under study. In this test, doctors study the hearts chambers in motion. This test can tell the doctor how well the heart pumps and how much blood it pumps with each heartbeat (called the ejection fraction) ...
Uses injections of small amounts of radioactive material. The radioactive isotopes tag to the specific organ, tissue, or bone of interest, where they emit gamma rays to a special camera, producing clear images that can pinpoint molecular activity. This helps identify diseases like many types of cancer and cardiac, GI, endocrine, neurology and other disorders. It has the potential to detect disease in its early stages and also offers the potential to see metastases in tissue or bone or to check function of the gall bladder, liver, spleen and other organs. CRMC also uses nuclear medicine image to examine the lymphatic system. Thanks to the ability to image metabolic activity, physicians may see a patients immediate response to drugs or other therapeutic interventions. The Nuclear Medicine departments nuclear medicine cameras include a Phillips Bright View and Phillips Forte imager, a single head Picker, Prism 1500 XP and a dual head Philips, Forte, with half the scan time of traditional ...
Functional constipation is a common problem in Hong Kong. In a recent telephone survey, the prevalence of constipation as defined by Rome II criteria was 14%.
Other. The Radiopharmaceuticals in Nuclear Medicine report provides the past, present and future industry trends and the forecast information related to the expected Radiopharmaceuticals in Nuclear Medicine sales revenue, Radiopharmaceuticals in Nuclear Medicine growth, Radiopharmaceuticals in Nuclear Medicine demand and supply scenario. Furthermore, the opportunities and the threats to the development of Radiopharmaceuticals in Nuclear Medicine market are also covered at depth in this research document.. Initially, the Radiopharmaceuticals in Nuclear Medicine manufacturing analysis of the major industry players based on their company profiles, annual revenue, sales margin, growth aspects is also covered in this report, which will help other Radiopharmaceuticals in Nuclear Medicine market players in driving business insights.. To Download A Sample Of The Report Click Here: http://qyresearch.us/report/global-radiopharmaceuticals-in-nuclear-medicine-market-2017/106930/#requestForSample. Key ...
The Whole Brain Atlas is an information resource for central nervous system imaging which integrates clinical information with magnetic resonance (MR), x-ray computed tomography (CT), and nuclear medicine images. The on-line atlas has sections on normal brain, cerebrovascular disease, neoplastic disease, degenerative disease, and inflammatory/infectious disease ...
Coronary artery disease (CAD) is the narrowing of the coronary arteries (the blood vessels that supply oxygen and nutrients to the heart muscle), caused by a buildup of fatty material within the walls of the arteries. This buildup causes the inside of the arteries to become rough and narrowed, limiting the supply of oxygen-rich blood to the heart muscle.. To better understand how coronary artery disease affects the heart, a review of basic heart anatomy and function follows.. The heart is basically a pump. The heart is made up of specialized muscle tissue, called the myocardium. The hearts primary function is to pump blood throughout the body, so that the bodys tissues can receive oxygen and nutrients and have waste substances taken away.. Like any pump, the heart requires fuel in order to work. The myocardium requires oxygen and nutrients, just like any other tissue in the body. However, the blood that passes through the hearts chambers is only passing through on its trip through the body - ...
Coronary artery disease (CAD) is the narrowing of the coronary arteries (the blood vessels that supply oxygen and nutrients to the heart muscle), caused by a buildup of fatty material within the walls of the arteries. This process leads the inside of the arteries to become rough and narrowed, limiting the supply of oxygen-rich blood to the heart muscle.. To better understand how coronary artery disease affects the heart, a review of basic heart anatomy and function follows.. The heart is basically a pump. The heart is made up of specialized muscle tissue called the myocardium. The hearts primary function is to pump blood throughout the body, so that the bodys tissues can receive oxygen and nutrients and have waste substances taken away.. Like any pump, the heart requires fuel in order to work. The myocardium requires oxygen and nutrients, just like any other tissue in the body. However, the blood that passes through the hearts chambers is only passing through on its trip through the body. ...
Looking for online definition of sodium pertechnetate in the Medical Dictionary? sodium pertechnetate explanation free. What is sodium pertechnetate? Meaning of sodium pertechnetate medical term. What does sodium pertechnetate mean?
The second type of radiation detector we will discuss is called the scintillation detector. Scintillations are minute flashes of light which are produced by certain materials when they absorb radiation. These materials are variously called fluorescent materials, fluors, scintillators or phosphors.. If we had a radioactive source and a scintillator in the lab we could darken the room, move the scintillator close to the source and see the scintillations. These small flashes of light might be green or blue or some other colour depending on the scintillator. We could also count the number of flashes produced to gain an estimate of the radioactivity of the source, that is the more flashes of light seen the more radiation present.. The scintillation detector was possibly the first radiation detector discovered. You might have heard the story of the discovery of X-rays by Wilhelm Roentgen in 1895. He was working one evening in his laboratory in Wurzburg, Germany with a device which fired a beam of ...
Early buyers will receive 10% customization on reports.. This report studies the North American Nuclear Medicine/Radiopharmaceuticals market for the forecast period of 2015 to 2020. This market is expected to reach USD 2.98 Billion by 2020 from USD 1.97 Billion in 2015, at a CAGR of 8.6%.. The North American nuclear medicine/radiopharmaceuticals market is segmented on the basis of type, application, and country.. Based on type, the North American nuclear medicine/radiopharmaceuticals market is categorized into diagnostic and therapeutic radioisotopes. In 2015, the diagnostic segment accounts for a major share of the North American nuclear medicine/radiopharmaceuticals market. The large share can be attributed to increasing patient population, introduction of new and effective radioisotopes, and increase in awareness about nuclear medicine. The diagnostic radiopharmaceuticals market is further segmented into SPECT and PET radioisotopes. In 2015, the SPECT segment accounts for the largest share of ...
Singe Photon Emission Computed Tomography (SPECT) allows the simultaneous assessment of blood flow distribution and wall motion, but many of the problems that interfere with optimal image quality have not yet been resolved. The application of attenuation correction is suboptimal and the ambitious target of absolute blood flow is still within the PET (Positron emission tomography) domain - thus still far from clinical cardiology.. Nevertheless, the recent introduction of Cadmium Zinc Telluride (CZT) detectors have enhanced the diagnostic spectrum of SPECT via a better temporal and spatial resolution, and have allowed an important reduction in both dose and scan time - by 50-75%. Also, the CZT technique has the theoretical "imaging power" needed for the measurement of absolute blood flow.. ...
Boston Medical Center & Boston University School of Medicine Center for Regenerative Medicine researchers: (L-R): Gustavo Mostoslavsky, M.D., Ph.D., Martin Steinberg, M.D., George Murphy, Ph.D.
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The effect of changes in the direction and magnitude of the gravitational-inertial force environment on the regional distribution of impacted 35-micron diameter microspheres has been measured in the lungs of six anesthetized chimpanzees. These distributions were determined by two computer-controlled scintiscans at 780 sites covering the dorsal and ventral surfaces of the thorax at 1 G subsequent to four injections of differentially isotope-tagged microspheres into the right ventricular outflow tract. Pulse-height analysis at each site allowed separation of count values for the isotopes, and, after correction for collimator distortion, these values were assumed to be proportional to the respective blood flows which were present below each site at the respective time of injections. Computer-generated 3-dimensional and contour map displays of the scintiscan and related physiologic data indicate that pulmonary blood flow tended to redistribute toward the midthoracic region during acceleration exposures
To assess the validity of myocardial imaging with potassium-43 (43K) early after the onset of ischemia, the left anterior descending artery was occluded with a baloon tip catheter in 32 intact anesthetized dogs. 99mTechnetium ventriculograms localized the left ventricle. 43K was administered intravenously and serial images were obtained in four views using an Anger camera with a pinhole collimator. The heart was arrested after 60 minutes and removed for imaging and tissue counts to ascertain extracardiac and geometric factors. In normals (group 1) left ventricular images were relatively homogeneous, except for the thin walled apex, both in vivo and in the isolated heart. Equilibration with 43K prior to ischemia (group 2) gave similar images to group 1, associated with a small reduction in tissue count after one hour of ischemia. Group 3 was infused with 43K after initiation of ischemia. Despite a reduction of 43K counts in the ischemic area ...
Scintiscan of the Thyroid Gland. tuha_23_n.jpg: Female teenager with a node of the left lower pole of the thyroid gland which is distinctly palpable. In the Tc 99m- or 123 I-scan a minimal to missing accumulation of the tracer is recognizable in the same place. The diagnosis is an inactive node of the left lower thyroid gland pole. The significance of thyroid scan in childhood concerns the proof of thyroid gland tissue in case of suspected goitre at the tongue base, anywhere else and/or at the normal site; in addition, the recognition of hormonal activity and dignity of thyroid gland nodes in teenagers. As in adults, the work-up examinations of pathologies of the goitre in children include hormonal examinations, ultrasound, and in case of suspected malignancy, fine-needle aspiration. In case of a node of the thyroid gland, a scan is performed with the aim to know if there is no activity at all, normal activity, or hyperactivity in the node; mainly, if the TSH is less than 0.6 mU/L, a scan is ...
We have studied the calibration of PMTs in scintillation detectors, inducing single electron response on the PMT from primary scintillation produced by x-ray interaction. The results agree with those obtained by the commonly used single electron response (SER) method, which uses LED light pulses to induce the PMT SER. The use of the primary scintillation for PMT calibration will be convenient in situations where the PMT is already in situ, when it becomes difficult or even impossible to apply the SER method, e.g. in commercial sealed scintillator/PMT devices. Furthermore, we have experimentally investigated the possibility of fitting the high-charge tail of the PMT SER pulse-height distribution to an exponential function, inferring the PMT gain from the inverse of the exponent. The results of the exponential fit method agree with those obtained by the SER method for pulse-height distributions resulting from an average number of around 1.0 photoelectrons reaching the first dynode per ...
Looking for online definition of Scintillation meter in the Medical Dictionary? Scintillation meter explanation free. What is Scintillation meter? Meaning of Scintillation meter medical term. What does Scintillation meter mean?
TY - JOUR. T1 - Scintigraphic assessment of alterations in cardiopulmonary haemodynamics and renal functional activity in patients with endured coronary artery bypass grafting. AU - Vesnina, Zh V.. AU - Krivonogov, N. G.. AU - Vecherskiĭ, Iu Iu. AU - Lishmanov, Iu B.. PY - 2015. Y1 - 2015. N2 - OBJECTIVE: By means of scintigraphic methods to assess alterations in cardiopulmonary haemodynamics and renal functional activity in patients with coronary artery disease (CAD) after endured coronary artery bypass grafting (CABG) performed in conditions of extracorporeal circulation (EC) and on the functioning heart.MATERIAL AND METHODS: We examined a total of 40 patients presenting with CAD (mean age 54.90±1.12 years) after endured CABG. All patients were subdivided into 2 groups: Group One consisting of 20 patients subjected to CABG performed on the beating heart with the use of myocardial "stabilizer" "Acrobat" (Study Group) and Group Two also comprising 20 patients but undergoing surgery with the ...
BIOPAC now offers multi-subject video monitoring systems. The new Camera Systems record multiple subjects or camera angles and AcqKnowledge media funtionality synchronizes the video to any physiological data being recorded with the MP150 Research System. The cameras work well in low-light conditions, making them very well-suited for long-term recordings, sleep studies, animal studies, and more.. Camera Systems work with AcqKnowledge 4.1 or above, Windows OS only. FIREWARE required for this product.. This upgrade adds the necessary components to change an existing CAMSYS4 four camera system into an eight camera system. ...
Osteoporosis of the spine. Coloured scintigram of the spine of a patient with osteoporosis. The T12 vertebra has developed a compression fracture and appears yellow. Osteoporosis is characterised by loss of bone density and deterioration of bone tissue, and causes pain and immobility. It is most common in post-menopausal women. A diet rich in calcium and regular weight-bearing exercise can help prevent it. Prior to a scintigram the patient is injected with a radioactive tracer, here technetium-99, that accumulates in the bones. A gamma camera is then used to detect the gamma rays emitted by the tracer. - Stock Image C022/6831
TY - JOUR. T1 - Pagets disease of the mandible. T2 - Lincoln sign on bone scintigraphy. AU - Nahum, E.. AU - Chandramouly, B.. AU - Thornhill, B.. PY - 1996/1/1. Y1 - 1996/1/1. N2 - The incidence of Pagets disease of the mandible is reportedly rare. A murine bone scintigraphy in the evaluation of metastases revealed diffuse intense increased activity in the mandible, consistent with Pagets disease, which was confirmed on the radiographs.. AB - The incidence of Pagets disease of the mandible is reportedly rare. A murine bone scintigraphy in the evaluation of metastases revealed diffuse intense increased activity in the mandible, consistent with Pagets disease, which was confirmed on the radiographs.. UR - http://www.scopus.com/inward/record.url?scp=0029976171&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0029976171&partnerID=8YFLogxK. U2 - 10.1097/00003072-199603000-00013. DO - 10.1097/00003072-199603000-00013. M3 - Article. C2 - 8846573. AN - SCOPUS:0029976171. VL - ...
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Clinical Nuclear Medicine Book Free Download http://urlin.us/cnsnd (Copy & Paste link) ******************** Nuclear Medicine: The Requisites, 4e . below and well send you a link to download the free Kindle . you need for effective clinical practice in nuclear medicine .. Nuclear Medicine Clinical Trial Group, LLC; Research: . Download your free digital copy. . When you submit your work to SNMMI Books, .. Pertinent clinical applications are emphasized rather than attempting to cover everything included in the several large . Download Clinical Nuclear Medicine. Share .. Look Up Quick Results Now! Find Related Search and Trending Suggestions Here.. Complete with more than 2,000 questions and answers, the third edition of Nuclear Medicine Board Review: Questions and Answers for Self-Assessment fully pr. Download pdf book by Ignac Fogelman - Free eBooks . The long-awaited third edition of An Atlas of Clinical Nuclear Medicine has been revised and updated to .. Clinical Nuclear Medicine. This awesome ...
A system for the automatic analysis of scintigraphic image sequences of the human heart is described in this paper. The aim of the system is the automatic detection of motion abnormalities. The...
Acute myocardial infarct (MI), commonly known as a heart attack, is a condition characterized by ischemic injury and necrosis of the cardiac muscle. Ischemic injury occurs when the blood supply is insufficient to meet the tissue demand for metabolism.
Chronic gastroparesis is a motility dysfunction often associated with severe symptoms, the most common disabling symptoms being nausea and vomiting. The term "gastroparesis" is a Greek word that means "a weakness of movement". In this article, some basic facts about gastroparesis are briefly mentioned before aspects on therapy are discussed.. Gastroparesis is defined as delayed gastric emptying in the absence of an obstruction to outflow from the stomach. Hence, the diagnostic procedure in patients with symptoms suggestive of gastroparesis should include at least gastroscopy, so as to exclude obstructive lesions. Furthermore, a gastric emptying test is required to verify abnormal emptying of the stomach. Although delayed emptying of both liquids and solids occurs in patients with gastroparesis, the delayed emptying of solids is considered the most relevant disturbance. Thus, a test of solid emptying is usually applied. The scintigraphic method is considered to be the gold standard. Reference ...
In the nuclear medicine technique, the patient is injected (usually into a vein in the arm or hand, occasionally the foot) with a small amount of radioactive material such as 740 MBq of technetium-99m-MDP and then scanned with a gamma camera, a device sensitive to the radiation emitted by the injected material. Two-dimensional projections of scintigraphy may be enough, but in order to view small lesions (less than 1 cm) especially in the spine, single photon emission computed tomography (SPECT) imaging technique may be required. In the United States, most insurance companies require separate authorization for SPECT imaging. A disruption of bone turnover by a pathologic process on the order of 5 to 15% from normal can be detected by bone scintigraphy. Specificity of bone scintigraphy can be increased by performing an indium 111-labeled white blood cell test combined with a technetium-99m-MDP injection.. About half of the radioactive material ...
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... is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. In nuclear medicine procedures, radionuclides are combined with other elements to form chemical compounds, or else combined with existing pharmaceutical compounds, to form radiopharmaceuticals. These radiopharmaceuticals, once administered to the patient, can localize to specific organs or cellular receptors. This property of radiopharmaceuticals allows nuclear medicine the ability to image the extent of a disease process in the body, based on the cellular function and physiology, rather than relying on physical changes in the tissue anatomy. In some diseases nuclear medicine studies can identify medical problems at an earlier stage than other diagnostic tests. Nuclear medicine, in a sense, is "radiology done inside out" or "endo-radiology" because it records radiation emitting from within the body rather than radiation that is generated by external ...
A radiation detector, in particular a gamma camera, is constructed and operated in such a fashion that only a predetermined number of light sensors (such as PMTs) adjoining each other in a cluster are used to generate a signal with amplitude and event position information. The camera may also use an array of individual scintillation elements (crystals) in place of a single crystal, with certain advantages obtained thereby. According to another aspect of the invention, there is a reflector sheet that defines an array of apertures through which scintillation light can pass from the scintillation crystal to a plurality of light sensors optically coupled to an optical window in an array corresponding to the array of apertures in the reflector.
Nuclear Medicine radiopharmacy including: production of radionuclides, radiopharmaceutical chemistry, radiopharmaceuticals and methods of radiolabeling, characteristics of specific radiopharmaceuticals, biorouting and physiological mechanisms of tracer uptake, phamacokinetics, radiation units, specific activity, concentration determination, dose calculations, methods of dispensing, quality assurance of radiopharmaceuticals, and universal precautions. Specialized clinical radiopharmaceuticals include: monoclonal antibodies, peptides, receptors, Positron Emission Tomography, therapy, and current research. Radiopharmacy design, management and record keeping, radiation safety and Nuclear Regulatory Commission (NRC) and Illinois Emergency Management Agency (IEMA) radiopharmacy rules and regulations. Prerequisite: Admission to Nuclear Medicine Technology program and Diagnostic Medical Imaging Nuclear Medicine 1100, Diagnostic Medical ...
Bone scintrigraphy has traditionally been a "hot" spot imaging method. Improvements in equipment design have allowed detection of focal "cold" defects that may not have been appreciated in the past. Photopenic lesions are, however, difficult to recognize consistently; they may be obscured by overlying normal bone, or adjacent areas of increased uptake. Axial lesions, as in this case, tend to be easier to identify, because the higher count density in adjacent normal bone provides better contrast with the photopenic region.. Numerous reports of "cold" lesions on bone scintigraphy appear in the literature; most are caused by artifacts, loss of blood supply or loss of bone. Barium, jewelry, coins, pacemakers and orthopedic, breast or dental prostheses may cause artifacts which may not be easily recognized. Ischemic bone may be seen as a "cold" spot because perfusion is necessary for uptake of the radiopharmaceutical. Avascular necrosis, acute osteomyelitis, radiation therapy, ...
Brain scans could reveal whether a patient will develop chronic back pain. In a recent study, brain scans taken early in the course of low-back pain predicted chronicity with 85% accuracy.. This is the first time scientists can look at two patients with the same injury and predict who will suffer from chronic pain, neuroscientist Vania Apkarian told Science Now.. Researchers took brain scans of 39 patients with moderate to severe back pain. For a year after the initial tests, researchers took four additional brain scans and tracked patients pain levels.. Although 20 patients recovered, 19 continued to suffer from persistent pain. Those patients had altered activity in the parts of the brain involved in learning and emotional responses, called the insula and the nucleus accumbens. This suggests that how these regions of the brain interact with one another could contribute to chronic pain. The communication between two regions could also influence how the brain reorganizes itself after an injury. ...
Development of plastic scintillation detector (PSD) systems for dosimetry has been evolving for two decades now. The subject area has been a topic of a keen research interest that has generated lot of publications lately. PSD systems are being introduced in the market place. Numerous PSD systems for External Beam Radiation Therapy and Brachytherapy have been proposed, most times differentiating from the original systems by slight changes in one or more components, such as the photodetector. However, few major technological and engineering innovations have enabled this new technology to be embraced by the community which helped launching these systems for commercialization (Standard Imaging, Radiadyne, etc.). Scintillation materials (plastic, scintillating fibers and liquid) have many properties that make them ideal for dosimetry including water equivalence and energy independence for MV photons, linearity with dose, dose rate independence, high spatial resolution and ...
Plymouth Meeting, PA - Early in November 2017, Dermatology Associates of Plymouth Meeting, P.C. introduced the Canfield Visia Camera System to its already wide range of cosmetic services. Dr. Griffin and his associates are excited to bring this unique camera system to their cosmetic program. With the latest technology available, patients are able to receive the most accurate consultation possible.. The Visia device accurately scans left, right, and frontal views and compares them to the worlds largest skin feature database. The highly detailed photographs are then used to identify problem areas and suggest possible solutions based on patients skin grade. Results can now be easily tracked from session to session thanks to this revolutionary camera system. Recommendations and treatment plans are created in the unique software and a web based portal allows patients to log in and view the consults from their home iPad or computer. As of early November, patients of Dermatology Associates of ...
Scintillation fluids based on toluene or xylene will no longer be available except by special order. Principal investigators who are authorized to use radioactive materials or are applying for such use may petition the Executive Committee for a scintillation fluid exception. Petitions must be submitted in writing and clearly state why the use of a scintillation counting fluid with a flash point , 140o F is required for their scintillation counting needs ...
Technetium Tc 99m Pyrophosphate: A radionuclide imaging agent used primarily in scintigraphy or tomography of the heart to evaluate the extent of the necrotic myocardial process. It has also been used in noninvasive tests for the distribution of organ involvement in different types of amyloidosis and for the evaluation of muscle necrosis in the extremities.
Knoxville Nuclear Medicine is dedicated to providing the highest quality diagnostic images possible, while maximizing patient safety. By working closely with healthcare providers, Knoxville Nuclear Medicine ensures that the scans it provides can help lead to faster and more accurate diagnoses.. Brian Clarke, owner of Knoxville Nuclear Medicine, started his company in order to provide patient-centered diagnostic services. As a native of Knoxville, Brian has deep roots in the community, often performing nuclear medicine imaging tests on people hes known for decades. Brians rapport with patients and relationships with the referring physicians has made him the top choice for nuclear medicine services. He has been serving Knoxville Hospital & Clinics since 1997.. Nuclear medicine services require a physician referral. If you have questions about the services offered at the Knoxville Hospital & Clinics, call Brian at (641) 842-1467.. ...
Background subtraction is considered the first processing stage in video surveillance systems, and consists of determining objects in movement in a scene captured by a static camera. It is an intensive task with a high computational cost. This work proposes an embedded novel architecture on FPGA which is able to extract the background on resource-limited environments and offers low degradation (produced because of the hardware-friendly model modification). In addition, the original model is extended in order to detect shadows and improve the quality of the segmentation of the moving objects. We have analyzed the resource consumption and performance in Spartan3 Xilinx FPGAs and compared to others works available on the literature, showing that the current architecture is a good trade-off in terms of accuracy, performance and resources utilization. With less than a 65% of the resources utilization of a XC3SD3400 Spartan-3A low-cost family FPGA, the system achieves a frequency of 66.5 MHz reaching 32.8 fps
Akaki, S.; Saeki, M.; Iguchi, T.; Okumura, Y.; Sato, S.; Kuroda, M.; Kanazawa, S.; Hiraki, Y.; Uraoka, T.; Baba, N.; Sakaguchi, K., 2002: Regional radioactivity discrepancy between Tc-99m GSA and Tc-99m phytate liver scans in a patient with massive hepatic necrosis
A multifield collimator system and radionuclide emission tomography camera using same which include at least two collimator segments whose fields of view in combination define at least two tomographic field of view boundaries. At least one of the boundaries encompasses the region to be imaged of an object. The fields of view may overlap at least in part to produce enhanced imaging sensitivity in the portion of overlap. The tomography camera detects radionuclide emissions from the region to collect at least one collimated image through each segment and combines the collimated images to produce a final image of the region exhibiting enhanced sensitivity in the portion of overlap. A multifield method of collimation is also disclosed.
Nuclear Medicine: Radionuclides, interaction between ionizing radiation and matter, radiation detection, imaging techniques, SPECT, PET, fundamentals of radiopharmacology, biological effects of ionizing radiation, radiation safety. Methods of nuclear medicine used in urology, skeletal and bone marrow scintigraphy, nuclear cardiology. Scintigraphy of CNS, lungs, thyroid gland, gastrointestinal tract, liver and spleen. Examination in hematology, diagnostics of inflammations and tumors. With each examination procedure, the radiopharmaceuticals used, the methods, evaluation, interpretation of the findings, and indications are explained. Principles of radioimmunologic diagnostic procedures. Relations between the methods of nuclear medicine and other imaging methods, role of radionuclide methods in diagnostic algorithms. Fundamentals of therapy of diseases using ...
Female head and tyroid gland. Coloured computer-enhanced gamma scan (scintigram) of a healthy human thyroid gland. The thyroid gland is a main endocrine gland situated at the base of the neck, and is divided into two lobes (as seen). The radioactive tracer Technetium-99m used in this gamma scan shows areas of activity (yellow) within the gland. The thyroid produces and stores hormones which control the basal metabolic rate of the body, influence growth and maturation, and regulate blood calcium levels. Gamma scanning involves introducing a radioactive tracer into the body, which is taken up by certain organs and detected as gamma rays by a gamma camera. - Stock Image C023/8567
Biology Assignment Help, Radioisotope diagnostic procedures, RADIOISOTOPE DIAGNOSTIC PROCEDURE: Radioisotope diagnostic procedures include perfusion, ventilation and gallium scan. Perfusion Lung Scan Following injection of a radioactive isotope, scans are made with a scintillation camera. 1) Mea
1. Brief Background about nuclear medicine services:. 1.1 Nuclear Medicine is a medical specialty that uses radiopharmaceuticals to diagnose and treat disease in a safe and painless way. Nuclear Medicine diagnostic procedures allow doctors to obtain clinical information otherwise not obtainable with other medical diagnostic sets. The procedure identifies abnormalities very early in the course of the disease long before problems are apparent on other medical procedures. Early detection of disease allows prompt treatment sooner before the disease is far advanced and the prognosis is worse.. 2. Staff. 2.1 Dr. S. C. Herman Nuclear Medicine physician (HOD). 2.2 Dr. W. N. Bezuidenhout Nuclear Medicine physician. 2.3 Ms. M. Owoses Radiographer 2.4 Ms. A. Jacobs Radiographer 2.5 Ms. R. Knittle Radiographer 2.6 Ms. M. Mandume Registered nurse. 2.7 Ms. C. Van Wyk Enrolled nurse 2.8 Mr. P. P. Haiduwa Radiation physicist. 2.8 Mrs. Hilde Araeb Data clerk. 3. Equipment. 3.1 SPECT (1). 3.2 SPECT-CT (1). 4. ...
1. Brief Background about nuclear medicine services:. 1.1 Nuclear Medicine is a medical specialty that uses radiopharmaceuticals to diagnose and treat disease in a safe and painless way. Nuclear Medicine diagnostic procedures allow doctors to obtain clinical information otherwise not obtainable with other medical diagnostic sets. The procedure identifies abnormalities very early in the course of the disease long before problems are apparent on other medical procedures. Early detection of disease allows prompt treatment sooner before the disease is far advanced and the prognosis is worse.. 2. Staff. 2.1 Dr. S. C. Herman Nuclear Medicine physician (HOD). 2.2 Dr. W. N. Bezuidenhout Nuclear Medicine physician. 2.3 Ms. M. Owoses Radiographer 2.4 Ms. A. Jacobs Radiographer 2.5 Ms. R. Knittle Radiographer 2.6 Ms. M. Mandume Registered nurse. 2.7 Ms. C. Van Wyk Enrolled nurse 2.8 Mr. P. P. Haiduwa Radiation physicist. 2.8 Mrs. Hilde Araeb Data clerk. 3. Equipment. 3.1 SPECT (1). 3.2 SPECT-CT (1). 4. ...
Scintigraphic images were analyzed in a time-lapse format and regions of interest were to be drawn to include the stomach and small intestine. Images were recorded in a supine position and a series of 3 to 60 consecutive anterior scintigraphic images, each 1 minute in duration, were recorded using a clinical grade gamma camera. After this initial continuous imaging sequence, additional images were recorded to coincide with PK blood sampling times as necessary to monitor the tablet disintegration and transit time through the intestines. Prior to ingesting the radiolabeled dosage forms, two external markers (2-3 microcuries of indium-111 or technetium-99m) were placed on each participant to facilitate consistent positioning underneath the gamma camera. The first marker was placed on the right side of the participants chest (approximately at the fifth intercostal rib) and a second marker was placed on the hip bone (approximately the left anterior superior ileac spine ...
... procedures are divided into two parts, laboratory work and imaging (scanning). The lab prepares radioactive solutions (radiopharmaceuticals) for intravenous injection. The radioactive solutions allow the specialized imaging equipment (gamma cameras) to acquire images. Computer programs process the information obtained from the images, in order to determine the location, size, and function of body tissues and organs. The type of radioactive tracer solution used is different for different parts of the body. A dual-head SPEC camera is now used in the Regina QuAppelle Health Region. This modern imaging equipment is versatile and efficient with improved diagnostic capabilities. The equipment can be used to produce images of all the organ systems within the body and aids in the diagnosis and treatment of such things as heart conditions, bone pain, kidney problems, and cancerous tumors. This dual-head SPEC ...
What is Nuclear Medicine? Nuclear Medicine is a medical specialty in which the diagnosis and treatment of human diseases are made by the use of a small amount of radioactive tracers. After administration of the tracer, images of the organ of interest in the patients body are obtained with a gamma camera that show the localization of the tracer in the organ, and physicians interpret them for the diagnosis of disease. Certain diseases are treated with high energy radiotracers in nuclear medicine based on the concept that high dose radiation kills cells.. How is a nuclear medicine study performed?. The patient is given intravenously, for some studies orally or by inhalation, a small dosage of a radiotracer specific for an organ under study. Some studies require that the patient exercise or receive a drug that dilates the arteries in the heart. The tracer localizes in the organ and emits gamma radiations that are detected by a special camera to form an image of the organ. ...
Lists the various brand names available for medicines containing sodium pertechnetate (tc-99m). Find information on sodium pertechnetate (tc-99m) use, treatment, drug class and molecular formula.
Single Incision Laparoscopic Surgery (SILS) can be performed entirely through the navel reducing patient trauma, recovery time, possibilities of infection, post-operative pain, and scaring. However, SILS is limited in its use due to design draw backs such as limited surgical tool motion and laparoscope positioning. The SILS specific camera system presented here is developed as a solution to these problems. The SILS camera device incorporates all the features of a laparoscopic vision system into a small, inexpensive, portable package that enables point-of-care applications and does not compete for space with the surgical tools (Figure 1). The device is inserted into a 12 mm incision in the umbilicus, followed by the SILS port. The camera remains separate from the SILS port, removing the need for a port dedicated to the laparoscope, thus allowing for an overall reduction in port size or the use of a third tool. Once inserted a spring deploys the camera system away from the incision site to rest ...
Three cases of myocardial visualization on a routine perfusion lung scintigram with99mTc-macroaggregated albumin were reported in patients with congenital heart diseases; two cases of tetralogy of...
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What Is Your Diagnosis?. Diagnosis. Umbilical polyp (persistence of the omphalomesenteric duct [OMD]).. Clinical Course and Treatment. Surgical removal and intraoperative examination of the base of the polyp were performed. No other abnormalities were observed. The patient was examined by the pediatric gastrointestinal unit. Soft-tissue ultrasound detected no involvement of deeper tissue layers and scintigraphy using 99mTc-pertechnetate was negative for ectopic gastric mucosa.. Comment. The OMD is the structure that connects the embryonic midgut to the yolk sac to provide nourishment for the embryo while the placenta develops during the first weeks of intrauterine life. Under normal conditions, the OMD should obliterate between the fifth and ninth week of development and should have disappeared completely by the time of birth. In 2% of the population, involution is incomplete,1 resulting in various remnants, such as Meckels diverticulum (the most common form), fistula between the ileum and the ...
Petroleum reservoir engineering may be defined as that branch of applied science which strives to understand the mechanics affecting petroleum reservoirs and petroleum production, and to apply that understanding to the efficient operation of petroleum reservoirs. During recent years, this branch of engineering has experienced tremendous growth in both depth and scope. Increased demand by our society for energy, increasing difficulty in discovering major quantities of domestic petroleum, and greater governmental concern, both domestic and foreign, for maximizing utilization of national resources, have added to the natural impetus of scientific curiosity in this field. The development of digital computers has contributed greatly to advancing this branch of applied science because it provided a possible means for performing the enormous volume of calculations required to solve complex reservoir engineering problems. In this paper, we will concern ourselves with the application of models to oil ...
Dublin, Nov. 4, 2013-- Research and Markets has announced the addition of the European Nuclear Medicine/Radiopharmaceuticals& Stable Isotopes Market- Trends& Forecast to 2017 report to their offering. The European radioisotopes market was valued at $1.1 billion in 2012 and is poised to reach $1.6 billion in 2017 at a CAGR of 6.8%. A study conducted by Organization for Economic Co-operation and Development estimates that Tc-99m diagnostic procedures are expected to increase by 15% to 20% in mature markets such as Europe, and other developed regions between 2010 and 2030. Radiopharmaceuticals in neurological applications such as Alzheimers disease, Parkinsons disease, and dementia are also being preferred by practitioners besides conventional treatment.
Middle Ages. In 1086 the estate at Compton was assessed at 5 hides, that at Dundon 5 hides, and that at Littleton at 3 hides, all 3 single holdings, although Littleton had been divided into 3 manors in 1066 and Compton had been shared between 2 monks. Details of demesne and tenants are not available for Compton, but both Dundon and Littleton had land for 4 teams. The demesne at Dundon measured 3 hides and ½ virgate and 4 serfs worked it with 2 teams; 5 villeins and 10 bordars worked the rest of the land with 3 teams. The demesne at Littleton also measured 3 hides (fn. 207) and 3 serfs worked it with 2 teams. Four villeins and 3 bordars with 1 team worked the rest. There were 20 a. of meadow at Compton and twice that much at both Dundon and Littleton. Stock comprised a riding horse, 2 beasts, 46 sheep, and 49 goats at Compton, 5 unbroken mares, 2 riding horses, and 9 pigs at Dundon, and 120 sheep at Littleton. (fn. 208) In 1283 the combined estates of Compton and Dundon had demesne measuring 330 ...
Health,Brain scans using positron emission tomography or PET markedly incre...Alzheimers disease is a growing health problem impacting about 4...Researchers from UCLA began screening patients who reported mild c...Results showed adding a PET scan improved the ability of neurologi...Overall patients with positive PET scans were over 18-times more ...,Brain,Scans,Help,Predict,Alzheimers,Disease,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
Anaheim police are preparing a report on their trial run of cameras on 15 patrol officers. It will be presented to department brass this month. The Orange County Sheriffs Department tested cameras in late 2012 and plans to conduct another test in September.. "The input from deputies was good," Sheriffs Department Lt. Jeff Hallock said. "You have a recording to support anything that they write in a police report and the accuracy of what occurred.". Laguna Beach police also tested body cameras in 2012, but then opted instead to upgrade the dash-mounted cameras on patrol vehicles. "This town is so traffic focused," Capt. Jason Kravetz said. "We tested it out, but thought it best to replace our car cameras.". Other departments testing body cameras acknowledge that there are questions about cost and storage that must be answered. Fullerton, for example, estimates it would cost up to $400,000 to outfit its 144 officers with body cameras, and that doesnt include the cost to store video data from 144 ...
Radioisotopes in medicine, nuclear medicine, the use of radioisotopes for diagnostics, radiation therapy, radiopharmaceuticals and other beneficial medical uses of nuclear technology. Tens of millions of nuclear medicine procedures are performed each year, and demand for radioisotopes is increasing rapidly
Thorlabs 8 Megapixel CCD Cameras are specifically designed for microscopy and other demanding scientific imaging applications. These cameras offer up to 8.5 frames per second at 40 MHz dual-tap readout of the full sensor. These monochrome cameras are ideal for multispectral imaging, fluorescence microscopy, and other high-performance imaging techniques that would benefit from a large field of view, high quantum efficiency, and low noise sensor.. Our cameras are offered in two package styles: a compact, non-cooled standard package and a hermetically sealed package with a two-stage TEC that cools the CCD. The fan-free design of our cameras limits image blur from vibrations. Cooling the camera will reduce the dark current; the total dark current is also a function of exposure time. For high light levels requiring short exposure times (less than 1 second), a non-cooled camera is generally sufficient. A cooled ...
Radiopharmacology or medicinal radiochemistry is radiochemistry applied to medicine and thus the pharmacology of radiopharmaceuticals (medicinal radiocompounds, that is, pharmaceutical drugs that are radioactive). Radiopharmaceuticals are used in the field of nuclear medicine as radioactive tracers in medical imaging and in therapy for many diseases (for example, brachytherapy). Many radiopharmaceuticals use technetium-99m (Tc-99m) which has many useful properties as a gamma-emitting tracer nuclide. In the book Technetium a total of 31 different radiopharmaceuticals based on Tc-99m are listed for imaging and functional studies of the brain, myocardium, thyroid, lungs, liver, gallbladder, kidneys, skeleton, blood and tumors.[1]. The term radioisotope, which in its general sense refers to any radioactive isotope (radionuclide), has historically been used to refer to all radiopharmaceuticals, and this usage ...
My GP is sending me for a brain scan. I have had a permanent headache for 6 weeks, sometimes pretty strong. I dont have any other GCA symptoms. Rheumatologist and GP dont think it is GCA. This...
... Abstract ...The TopCount Microplate Scintillation and Luminescence Counter has bee... Introduction ...Cerenkov radiation occurs when charged particles traveling at or great...,Cerenkov,Counting,Performance,on,the,TopCountTM,Microplate,Scintillation,and,Luminescence,Counter,biological,advanced biology technology,biology laboratory technology,biology device technology,latest biology technology
Somatostatin Receptor Scintigraphy (using radiolabeled octreotide) is similar to whole body bone scan and images are acquired through a gamma camera. Modern scintigraphy techniques (eg. SPECT) allow 3D localisation of areas of uptake. SRS is useful for detection of primary disease and metastatic sites, although modern cross sectional imaging also capable of doing this. Scintigraphy techniques are limited by the general poor resolution of nuclear medicine techniques (poor detection of tumours , 1 cm ...
Read user reviews, compare products and contact manufacturers of Scintillation products, including particle counters, scintillation counters and radiometers on SelectScience.
[180 Pages Report] North American Nuclear Medicine/Radiopharmaceuticals Market categories the Global Market by Application (Cardiology, Oncology), Type (Therapeutic (Alpha Emitters, Beta Emitters - I-131, Brachytherapy - Y-90), Diagnostic (PET- F-18, SPECT - Technetium)) & Geography
Whole-body 123I-Metaiodobenzylguanidine (mIBG) scintigraphy is used as primary image modality to visualize neuroblastoma tumours and metastases because it is the most sensitive and specific radioactive tracer in staging the disease and evaluating the response to treatment. However, especially in paediatric neuroblastoma, information from mIBG scans is difficult to extract because of acquisition difficulties that produce low definition images, with poor contours, resolution and contrast. These problems limit physician assessment. Current oncological guidelines are based on qualitative observer-dependant analysis. This makes comparing results taken at different moments of therapy, or in different institutions, difficult. In this paper, we present a computerized method that processes an image and calculates a quantitative measurement considered as its entropy, suitable for the identification of abnormal uptake regions, for which there is enough suspicion that they may be a tumour or metastatic site. This
Diagnostics segment accounted for the largest market share of radiopharmaceuticals in the year 2014. Furthermore, in diagnostics segment SPECT captured the largest share of radiopharmaceuticals market. In the application segment cardiology accounted largest share of the nuclear medicine market in the year 2014.. Radiopharmaceutical Global Market - Overview. Radiopharmaceuticals or Nuclear medicines are medicinal formulations containing radioisotopes which are safe for administration in humans for diagnosis or for therapy. These organic molecules carry the radioisotopes to tissues, specific organs and cells as the properties of radioisotopes are specific. Among the several applications of radioisotopes, medical applications were considered to be of the highest priority.. Radiopharmaceuticals are used in diagnosis and treatment of cancer. Radiopharmaceuticals can provide useful information about the function and molecular biology of cancer by measuring several of the causal factors. In future, ...
Brain scans using fMRI are used more and more by some psychiatrists to prove that certain behavioral disorders are brain abnormalities when most differences merely reflect performance variables or, more importantly, conditioned responses to prevalent environmental factors. Some differences may reflect disease, but other factors have to be considered to know for sure.
Urgency. Renal dysfunction is considered an independent RF for an unfavorable course of IHD and mortality in patients with progressive HF. At the same time studies focused on effects of disturbed cardiopulmonary hemodynamics on the renal function in patients with CF are scanty and controversial. Aim. To study the interrelation between disorders of central hemodynamics and renal function in patients with HF using radionuclide techniques. Material and methods. 37 patients with IHD (mean age 52.43±1.29 years) and II-II NYHA class HF were evaluated. All patients underwent radiocardiopulmonography (RCPG) with 99mТс-pertechnetate and dynamic radionuclide renoscintigraphy with 99mТс-DMCA for calculation of cardiopulmonary hemodynamic parameters and renal function. Results. The evaluated patients had abnormalities in most cardiopulmonary hemodynamic parameters, which indicated reduction of both left and right ventricular contractility with ...
Sales, means the sales volume of Nuclear Medicine & Radio Pharmaceuticals Revenue, means the sales value of Nuclear Medicine & Radio Pharmaceuticals This report studies sales (consumption) of Nuclear Medicine & Radio Pharmaceuticals in Europe market, especially in Germany, UK, France, Russia, Italy, Benelux and Spain, focuses on top players in these countries, with sales, price, revenue and marke
Find a Nuclear Medicine Doctor near you. Review services, ratings, office details, contact information and directions for local nuclear medicine physicians.
Virtual Camera System - A virtual camera system comprises a plurality of physical cameras and a hardware setup miming software to create virtual viewpoints for the virtual camera system. The position of the physical cameras is constrained, where the main constraint is the overlap between the physical cameras. The present invention provides a method for creating a virtual viewpoint of a plurality of images captured by the plurality of cameras, the images comprising current frames and previous frames. The method comprises creating background frames by combining a set of previous frames; creating a plurality of foreground masks by performing segmentation on the plurality of current frames, the segmentation comprising separating foreground objects from background objects using the created background frames; extracting the foreground objects by AND-ing the plurality of current frames with the created plurality of foreground masks; rendering the foreground objects by using a three dimensional ...
The Nuclear Cardiology Fellowship Program provides training in all aspects of nuclear cardiology practice, including cardiac PET, stress performance and interpretation and image analysis and interpretation.
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Medical Camera System Report by Material, Application, and Geography - Global Forecast to 2021 is a professional and in-depth research report on the world
Typically, a PET-scanner consists of a detector ring with 60 cm diameter and 20 cm length inside which the patient is positioned. For brain studies the patient bed is positioned in such a way that the entire brain is within the field of view. To investigate the entire patient the bed is moved step-by-step. The detector consists of scintillation detectors with scintillation crystals coupled to photomultipliers. The radiation, which is emitted from the patient after the injection of a weak radioactively labelled substance (radiotracer), causes light pulses within the scintillation crystals. This light is converted to electrical signals by the photomultiplier. A detector is linked to opposing detectors by a coincidence logic: if the radiation hits two opposing detectors within a time interval of, e.g. 6 ns, it is assumed that the radiation comes from a radiotracer molecule located on the line connecting the two detectors. During the PET study, which can last from a few minutes up to two or three ...
If you are going to have a MRI just for a checkup, you might get some surprising results. Routine MRI brain scans are likely to result in the detection of
Medical science is coming a long way fast. Most-recently, some interesting progress has been made in the area of brain scans, and how they could be implemented
Behaviors such as addiction and depression could be predicted through the use of brain scans. What else could this technology be used for in the future?
For some mood-swinging urbanites, reports Joanne Chen, talk is cheap, pills are passé, and brain scans hold the promise of a beautiful mind.
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天瓏網路書店-PET/CT in Melanoma (Clinicians Guides to Radionuclide Hybrid Imaging)天瓏網路書店-PET/CT in Melanoma (Clinicians' Guides to Radionuclide Hybrid Imaging)

Guides to Radionuclide Hybrid Imaging),ISBN:3319547402,作者:,出版社:Springer,出版日期:2017-08-01 ... The book is published within the Springer series Clinicians Guides to Radionuclide Hybrid Imaging (compiled under the auspices ... Imaging features are described and illustrated with the aid of a series of teaching cases, and attention is drawn to normal ... Readers will also find explanation of the relation of the clinical and pathological background to imaging and the value of PET/ ...
more infohttps://www.tenlong.com.tw/products/9783319547404

Bone - WikipediaBone - Wikipedia

Radionuclide and hybrid bone imaging. Berlin: Springer. pp. 29-57. ISBN 978-3-642-02399-6.. ... Bones are then often imaged, called radiography. This might include ultrasound X-ray, CT scan, MRI scan and other imaging such ... 2014). "On estimating the directionality distribution in pedicle trabecular bone from micro-CT images". Journal of ... radiologists in interpreting the findings on imaging, and pathologists in investigating the cause of the disease, and family ...
more infohttps://en.wikipedia.org/wiki/Bone

Indium-labelled WBC scan: MedlinePlus Medical EncyclopediaIndium-labelled WBC scan: MedlinePlus Medical Encyclopedia

Radionuclide and hybrid imaging. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allisons Diagnostic ... The test is controlled so that you get only the smallest amount of radiation exposure needed to produce the image. Most experts ... Other imaging tests such as an ultrasound or CT scan are often done first. ...
more infohttps://medlineplus.gov/ency/article/003382.htm

PET scan: MedlinePlus Medical EncyclopediaPET scan: MedlinePlus Medical Encyclopedia

A positron emission tomography scan is a type of imaging test. It uses a radioactive substance called a tracer to look for ... Radionuclide and hybrid imaging. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allisons Diagnostic ... Too much movement can blur images and cause errors.. How long the test takes depends on what part of the body is being scanned. ... A positron emission tomography scan is a type of imaging test. It uses a radioactive substance called a tracer to look for ...
more infohttps://medlineplus.gov/ency/article/003827.htm

Bone - WikipediaBone - Wikipedia

Radionuclide and hybrid bone imaging (PDF). Berlin: Springer. pp. 29-57. ISBN 978-3-642-02399-6.. ... Bones are then often imaged, called radiography. This might include ultrasound X-ray, CT scan, MRI scan and other imaging such ... 2014). "On estimating the directionality distribution in pedicle trabecular bone from micro-CT images". Journal of ... radiologists in interpreting the findings on imaging, and pathologists in investigating the cause of the disease, and family ...
more infohttps://en.wikipedia.org/wiki/Cortical_bone

Thyroid Cancer Pathology | SpringerLinkThyroid Cancer Pathology | SpringerLink

Clinicians Guides to Radionuclide Hybrid Imaging. Springer, Cham. * First Online 28 March 2018 ... Part of the Clinicians Guides to Radionuclide Hybrid Imaging book series (CGRHI) ...
more infohttps://link.springer.com/chapter/10.1007/978-3-319-71846-0_2

Bone scintigraphy - WikipediaBone scintigraphy - Wikipedia

Radionuclide and hybrid bone imaging. Berlin: Springer. p. 345. doi:10.1007/978-3-642-02400-9_12. ISBN 978-3-642-02399-6. ... In the 1950s and 1960s Calcium-45 was investigated, but as a beta emitter proved difficult to image. Imaging of positron and ... In a single phase protocol (skeletal imaging alone), which will primarily highlight osteoblasts, images are usually acquired 2- ... images. In order to view small lesions SPECT imaging technique may be preferred over planar scintigraphy. ...
more infohttps://en.wikipedia.org/wiki/Bone_scintigraphy

Brain PET scan  | Health Encyclopedia | FloridaHealthFinder.govBrain PET scan | Health Encyclopedia | FloridaHealthFinder.gov

Radionuclide and hybrid imaging. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allisons Diagnostic ... Other imaging tests, such as magnetic resonance imaging (. MRI) and computed tomography (. CT) scans only reveal the structure ... You must lie still during test so that the machine can produce clear images of your brain. You may be asked to read or name ... A brain positron emission tomography (PET) scan is an imaging test of the brain. It uses a radioactive substance called a ...
more infohttp://www.floridahealthfinder.gov/healthencyclopedia/Health%20Illustrated%20Encyclopedia/1/007341.aspx

PET scan | Health Encyclopedia | FloridaHealthFinder.govPET scan | Health Encyclopedia | FloridaHealthFinder.gov

Radionuclide and hybrid imaging. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allisons Diagnostic ... Too much movement can blur images and cause errors.. How long the test takes depends on what part of the body is being scanned. ... Positron emission tomography; Tumor imaging - PET; PET/CT. How the Test is Performed. A PET scan uses a small amount of ... Noninvasive cardiac imaging. In: Goldman L, Schafer AI, eds. Goldmans Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier ...
more infohttps://www.floridahealthfinder.gov/healthencyclopedia/Health%20Illustrated%20Encyclopedia/1/003827.aspx

Bone - WikipediaBone - Wikipedia

Radionuclide and hybrid bone imaging (PDF). Berlin: Springer. pp. 29-57. ISBN 978-3-642-02399-6.. ... Bones are then often imaged, called radiography. This might include ultrasound X-ray, CT scan, MRI scan and other imaging such ... 2014). "On estimating the directionality distribution in pedicle trabecular bone from micro-CT images". Journal of ... radiologists in interpreting the findings on imaging, and pathologists in investigating the cause of the disease, and family ...
more infohttps://en.m.wikipedia.org/wiki/Bone

From Sméagol to Gollum: Mechanical Stress and Bone RemodellingFrom Sméagol to Gollum: Mechanical Stress and Bone Remodelling

In: Fogelman, I., Gnanasegaran, G. and Wall, H., Eds., Radionuclide and Hybrid Bone Imaging, Springer, Berlin, Heidelberg, 29- ... Using clinical CT and high resolution μCT images, patient-specific model explains why these fractures were not healing properly ... The use of fluorescent imaging confirmed that the short pulse produced significant bone formation on the periosteal surface ... Indeed, through in-situ immunofluorescent imaging, periosteal cells were stained for detecting the act in cytoskeleton. The ...
more infohttps://www.scirp.org/Html/4-2010528_83869.htm

Bimodal Imaging Probes for Combined PET and OI: Recent Developments and Future Directions for Hybrid Agent DevelopmentBimodal Imaging Probes for Combined PET and OI: Recent Developments and Future Directions for Hybrid Agent Development

Using a hybrid compound consisting of a fluorescent dye in addition to a radionuclide, the optical intraoperative imaging can ... 2. Examples of Dually Labeled Agents Applicable in Hybrid In Vivo PET and Optical Imaging. Besides hybrid agents for combined ... Thus, in order to achieve optimal imaging results using a dually labeled hybrid antibody for PET and NIR fluorescence imaging, ... The development of new combined imaging techniques however also requires the development of the respective hybrid imaging ...
more infohttps://www.hindawi.com/journals/bmri/2014/153741/

Essentials of Nuclear Medicine Physics ... | WHSmith BooksEssentials of Nuclear Medicine Physics ... | WHSmith Books

Hybrid Imaging Systems: PET/CT and SPECT/CT 129 11. Image Reconstruction, Processing, and Display 134 12. Information ... Formation of Radionuclides 32 4. Non-scintillation Detectors 41 5. Scintillation Detectors 60 6. Imaging Instrumentation 73 7. ... Included in the text are introductory chapters on relevant quantum mechanics, methods of radionuclide production, and the ... Management of Nuclear Event Casualties 212 Kevin Donohoe, MD Appendix A: Common Radionuclides 224 Appendix B: Major Dosimetry ...
more infohttps://www.whsmith.co.uk/products/essentials-of-nuclear-medicine-physics-and-instrumentation-3rd-edition/9780470905500

Clinical Applications of PET/MRI in Brain Imaging | Springer for Research & DevelopmentClinical Applications of PET/MRI in Brain Imaging | Springer for Research & Development

Brain imaging is one of the valuable applications of the hybrid PET/MRI given the anatomical and physiological complexity of ... Guides to Radionuclide Hybrid Imaging book series (CGRHI). Abstract. Brain imaging is one of the valuable applications of the ... Clinicians Guides to Radionuclide Hybrid Imaging. Springer, Cham. * First Online 06 March 2019 ... Metabolic mapping of gliomas using hybrid MR-PET imaging. Investig Radiol. 2013;48(5):295-301.Google Scholar ...
more infohttps://rd.springer.com/chapter/10.1007/978-3-030-01523-7_13

Basic Sciences of Nuclear Medicine, Book by Magdy Khalil (Hardcover) | chapters.indigo.caBasic Sciences of Nuclear Medicine, Book by Magdy Khalil (Hardcover) | chapters.indigo.ca

SPECT/CT hybrid imaging.- PET imaging.- PET/CT hybrid imaging.- Tracer kinetic modeling: Basics, concepts, and applications.- ... production of radionuclides.- Technetium radiopharmaceuticals.- Iodinated radiopharmaceuticals.- Radionuclides used for therapy ... quantitative SPECT imaging, quantitative cardiac SPECT, small animal imaging (including multimodality hybrid imaging, e.g., PET ... Image display and processing.- Gamma camera: Basic principles and performance characteristics.- Single photon emission computed ...
more infohttps://www.chapters.indigo.ca/en-ca/books/basic-sciences-of-nuclear-medicine/9783540859611-item.html

Oregon Health Authority : Rules and Statutes Governing the Public Health Division : Rules and Regulations : State of OregonOregon Health Authority : Rules and Statutes Governing the Public Health Division : Rules and Regulations : State of Oregon

Radiation Safety Requirements For X-Ray and Hybrid Gauges. 116. Use Of Radionuclides In The Healing Arts. ... Imaging and Localization - Specific Requirements for Positron Emission Tomography (PET) Facilities. Division 117: Regulation ... Division 116: Use of Radionuclides in the Healing Arts - General Technical Requirements - Uptake, Dilution and Excretion - ... Division 115: Radiation Safety Requirements for X-Ray and Hybrid Gauges - Equipment Requirements - Area Requirements - ...
more infohttp://www.oregon.gov/oha/PH/RULESREGULATIONS/Pages/index.aspx

Novel Imaging in Detection of Metastatic Prostate Cancer | Springer for Research & DevelopmentNovel Imaging in Detection of Metastatic Prostate Cancer | Springer for Research & Development

... imaging and discuss novel clinical imaging in advanced disease. ... Radionuclide and hybrid imaging of recurrent prostate cancer. ... PCa staging through imaging is important for proper selections in clinical treatment. Traditional imaging techniques for ... Can whole-body magnetic resonance imaging with diffusion-weighted imaging replace Tc 99m bone scanning and computed tomography ... Radiological imaging for the diagnosis of bone metastases. Q J Nucl Med. 2001;45(1):53-64.PubMedGoogle Scholar ...
more infohttps://rd.springer.com/article/10.1007%2Fs11912-019-0780-8

Radionuclide Imaging of Musculoskeletal Infections | SpringerLinkRadionuclide Imaging of Musculoskeletal Infections | SpringerLink

Gratz S, Dorner J, Fischer U et al (2002) 18F-FDG hybrid PET in patients with suspected spondylitis. Eur J Nucl Med Mol Imaging ... Palestro CJ, Torres MA (1997) Radionuclide imaging in orthopedic infections. Semin Nucl Med 27:334-345CrossRefPubMedGoogle ... Stumpe K.D.M. (2009) Radionuclide Imaging of Musculoskeletal Infections. In: Hodler J., Zollikofer C.L., Von Schulthess G.K. ( ... Reinartz P, Mumme T, Hermanns B et al (2005) Radionuclide imaging of the painful hip arthroplasty: positron-emission tomography ...
more infohttps://link.springer.com/chapter/10.1007/978-88-470-1378-0_29

Lund University PublicationsLund University Publications

Hybrid Imaging for Patient-Specific Dosimetry in Radionuclide Therapy Ljungberg, Michael LU and Sjögreen Gleisner, Katarina LU ... Low-dose computed tomography of the lumbar spine: a phantom study on imaging parameters and image quality Alshamari, Muhammed ... Wallin, Anders ; Shams, Sara ; Cavallin, Lena and Larsson, Elna Marie (2017) In Insights into Imaging 8(1). p.79-90 Mark ... Improvement of CT image quality with iterative reconstruction iDose4 Aurumskjöld, Marie-Louise LU ; Norrgren, Kristina and ...
more infohttps://lup.lub.lu.se/search/search/publication?limit=15&q=keywords+exact+%22CT%22

Biographies - British Institute of RadiologyBiographies - British Institute of Radiology

His specialist interests are conventional radionuclide and hybrid bone imaging, radionuclide therapy/theranostics, ... Her specialist interests include conventional radionuclide and hybrid imaging (SPECT and PET/CT). Amy is the Educational Lead ... His special interests include radionuclide therapy and oncological imaging . Shaunak has a particular interest in imaging and ... His main interests are in Diagnostic Imaging and Nuclear Medicine and specifically in hybrid imaging. Glafkos is a keen Science ...
more infohttps://www.bir.org.uk/get-involved/special-interest-groups/bir-nuclear-medicine-molecular-imaging/biographies/

Centre for Nuclear Medicine - Hirslanden Klinik HirslandenCentre for Nuclear Medicine - Hirslanden Klinik Hirslanden

Open radionuclides are also used for certain therapies.. Together with the slice imaging techniques of computed tomography, ... At our clinic, these examinations are performed with the most advanced hybrid devices, such as the SPECT/CT. They are carried ... Nuclear medicine, which belongs to the field of molecular imaging, is concerned primarily with imaging, functional studies of ... Efficient, modern diagnostics integrate molecular imaging with the morphological representation of diseases, which consolidates ...
more infohttps://www.hirslanden.ch/en/klinik-hirslanden/centers/zentrum-fuer-nuklearmedizin.html

Radionuclide Imaging of Neurohormonal System of the HeartRadionuclide Imaging of Neurohormonal System of the Heart

Molecular hybrid positron emission tomography/computed tomography imaging of cardiac angiotensin II type 1 receptors. J Am Coll ... Sympathetic nervous imaging. Parasympathetic nervous imaging. Renin-angiotensin aldosterone.... Endothelin A receptor imaging. ... Use of cardiac radionuclide imaging to identify patients at risk for arrhythmic sudden cardiac death. J Nucl Med. 2012;19(1): ... Radionuclide imaging of angiotensin II type 1 receptor upregulation after myocardial ischemia-reperfusion injury. J Nucl Med. ...
more infohttps://www.thno.org/v05p0545.htm

Imaging in Avascular Necrosis of the Femoral Head: Practice Essentials, Radiography, Computed TomographyImaging in Avascular Necrosis of the Femoral Head: Practice Essentials, Radiography, Computed Tomography

Pitfalls and Limitations of Radionuclide Planar and Hybrid Bone Imaging. Semin Nucl Med. 2015 Sep. 45 (5):347-72. [Medline]. ... Planar radionuclide imaging, bone scintigraphy using pinhole collimation, and planar scintigraphic imaging using quantitative ... Fatty marrow has high signal intensity on T1-weighted images (T1WIs) and T2-weighted images (T2WIs) (see the images below). ... Collier reported a sensitivity of 55% with planar radionuclide imaging for AVN. [18] However, bone scintigraphy equipped with a ...
more infohttps://emedicine.medscape.com/article/386808-overview

Bone Scan: Background, Indications, ContraindicationsBone Scan: Background, Indications, Contraindications

This has traditionally been accomplished by imaging a radionuclide whose physiology closely mimics a metabolic process within ... A bone scan images the metabolic activity of the skeleton. ... Hybrid PET/CT imaging combines the benefits of molecular with ... A bone scan images the metabolic activity of the skeleton. This has traditionally been accomplished by imaging a radionuclide ... The image on the left has 50% NaF and 50% FDG. The middle image has 20% NaF and 80% FDG. The image on the right is a standard ...
more infohttps://emedicine.medscape.com/article/2109077-overview
  • Beyond the development of agents suitable for PET alone, recent tendencies aim at the synthesis of bimodal imaging probes applicable in PET as well as optical imaging (OI), as this combination of modalities can provide clinical advantages. (hindawi.com)
  • Despite these favorable properties of PET/CT and also PET/MRI systems in whole-body imaging for the identification of target structures, these modalities exhibit certain limitations: after having specifically identified and localized a tumor target tissue, the resection of the tumor mass is difficult due to the intricate intraoperative identification of tumor margins and small metastases. (hindawi.com)
  • For this purpose, another combination of imaging modalities could be of special interest, namely, the combination of PET with optical imaging (OI). (hindawi.com)
  • It also compares its advantages and disadvantages to those of other available imaging modalities. (springer.com)
  • Conventional imaging modalities for PCa incompletely characterize disease burden. (springer.com)
  • Multiple imaging modalities are being used in the workup of children with known or suspected osteomyelitis. (appliedradiology.com)
  • He lectures on the undergraduate physics, doctoral training centre in medical imaging, and FRCR courses at Oxford. (bir.org.uk)
  • The International Atomic Energy Agency (IAEA) announces its intention to hold the International Conference on Integrated Medical Imaging in Cardiovascular Diseases (IMIC2013). (iaea.org)
  • The IAEA has been applying many approaches for capacity building in Member States to allow them to optimally utilize medical imaging technologies. (iaea.org)
  • Using a similar model, it is proposed to hold this International Conference on Integrated Medical Imaging in Cardiovascular Diseases (IMIC2013). (iaea.org)
  • The conference will cover developments in the entire spectrum of activities related to medical imaging as applied to CVDs. (iaea.org)
  • The IAEA invites participants to provide high quality contributions on all aspects of medical imaging as applied to the management of CVDs. (iaea.org)
  • There is an increased risk of radiation effects when a person's cumulative lifetime radiation exposure from diagnostic medical imaging exceeds 100 mSv. (medscape.com)
  • In an effort to further understand these potential risks, the International Atomic Energy Agency has launched a global effort to have individuals track their cumulative radiation exposure from medical imaging. (medscape.com)
  • Evaluation of a CdTe semiconductor based compact gamma camera for sentinel lynph node imaging" , (Med. (infn.it)
  • Note tracer uptake in the ureters, which can be better localized by review of the axial images and by delayed imaging after voiding. (medscape.com)
  • Termaat MF, Raijmakers PG, Scholten HJ et al (2005) The accuracy of diagnostic imaging for the assessment of chronic osteomyelitis: a systematic review and meta-analysis. (springer.com)
  • Combined PET/MR imaging has improved the diagnostic power for Alzheimer's disease, enabling early and accurate diagnoses and better elimination of differential diagnoses. (news-medical.net)
  • Integrated PET/MR imaging for Alzheimer's disease has proved to benefit diagnostic, prognostic and classification purposes and also increases practical convenience for patients by cutting down the number of appointments they need to attend. (news-medical.net)
  • Thus, there is an emerging interest in bimodal agents for PET and OI in order to exploit the potential of both imaging techniques for the imaging and treatment of tumor diseases. (hindawi.com)
  • Love C, Marwin SE, Tomas MB et al (2004) Diagnosing infection in the failed joint replacement: a comparison of coincidence detection 18F-FDG and 111 In-labeled leukocyte/ 99mTc-sulfur colloid marrow imaging. (springer.com)
  • The test is controlled so that you get only the smallest amount of radiation exposure needed to produce the image. (medlineplus.gov)
  • While PET/MR imaging does pose certain risks including radiation exposure and rare allergic reactions, its ability to provide accurate and early diagnosis of Alzheimer's disease means that better treatment can be provided for a disease that currently lacks an effective treatment plan to stop or slow its progression. (news-medical.net)
  • PET, due to the high tissue penetration of the -radiation emitted by PET nuclides, allows a quantitative imaging able to identify and visualize tumors and metastases in the whole body. (hindawi.com)
  • It combines the advanced soft tissue contrast and imaging parameters of MR and the high sensitivity of PET. (news-medical.net)
  • Incidental findings in imaging research: evaluating incidence, benefit, and burden. (springer.com)
  • Her experience spans nearly 20 years in both paediatric and adult imaging in both teaching and academic hospitals and she has a keen interest in promoting education and supporting individuals to be the best they can be. (bir.org.uk)
  • In a single phase protocol (skeletal imaging alone), which will primarily highlight osteoblasts, images are usually acquired 2-5 hours after the injection (after four hours 50-60% of the activity will be fixed to bones). (wikipedia.org)
  • Brain imaging is one of the valuable applications of the hybrid PET/MRI given the anatomical and physiological complexity of the brain and the subtlety of the neurological changes that accompany many of the neurodegenerative, epileptic, and oncological diseases. (springer.com)
  • Head motion can interfere with PET images but is sometimes difficult to avoid in patients with neurologic disorders. (news-medical.net)
  • Within the last decades, the development of new radiotracers for PET imaging has experienced an enormous progress due to its enormous specificity and sensitivity in the visualization of target tissues. (hindawi.com)
  • This short review summarizes the available hybrid probes developed for dual PET and OI and discusses future directions for hybrid agent development. (hindawi.com)
  • Radionuclide bone imaging: an illustrative review. (springer.com)
  • In this article, we review the current status of applying radionuclide technology in non-invasive imaging of neurohormonal system in the heart, especially focusing on the tracers that are currently available. (thno.org)
  • It demonstrates degenerative disease in the right lower lumbar spine, which was confirmed by review of the CT images. (medscape.com)
  • Palestro CJ, Roumanas P, Swyer AJ et al (1992) Diagnosis of musculoskeletal infection using combined In-111 labeled leukocyte and Tc-99m SC marrow imaging. (springer.com)
  • Simultaneous PET/MR imaging in a human brain PET/MR system in 50 patients-current state of image quality. (springer.com)
  • Initial experience in hybrid PET-MRI for evaluation of refractory focal onset epilepsy. (springer.com)
  • In addition, the training will prepare the resident to perform other aspects of an imaging physicist's responsibilities including teaching, research, radiation safety and administration. (childrenshospital.org)