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.
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.
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)
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.
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.
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.
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.
Pollutants, present in water or bodies of water, which exhibit radioactivity.
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.
Unstable isotopes of strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.
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).
Pollutants, present in soil, which exhibit radioactivity.
The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.
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. A metal, atomic number 75, atomic weight 186.2, symbol Re. (Dorland, 28th ed)
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)
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.
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. 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.
An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.
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).
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.
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).
Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.
Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.
High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.
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.
Unstable isotopes of gold that decay or disintegrate emitting radiation. Au 185-196, 198-201, and 203 are radioactive gold isotopes.
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. An element of the rare earth family of metals. It has the atomic symbol Ho, atomic number 67, and atomic weight 164.93.
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.
Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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 substances which act as pollutants. They include chemicals whose radiation is released via radioactive waste, nuclear accidents, fallout from nuclear explosions, and the like.
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.
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. 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. An element of the rare earth family of metals. It has the atomic symbol Lu, atomic number 71, and atomic weight 175.
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.
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.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in cardiovascular and cerebral circulation.
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. 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.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.
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.
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)
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.
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)
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.
Motion pictures of the passage of contrast medium through blood vessels.
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.
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.
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.
Inorganic compounds that contain tin as an integral part of the molecule.
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.
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)
The hollow, muscular organ that maintains the circulation of the blood.
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.
Radiography of the heart and great vessels after injection of a contrast medium.
Electronic instruments that produce photographs or cathode-ray tube images of the gamma-ray emissions from organs containing radionuclide tracers.
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. 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.
Organic compounds that contain technetium as an integral part of the molecule. These compounds are often used as radionuclide imaging agents.
A specialty field of radiology concerned with diagnostic, therapeutic, and investigative use of radioactive compounds in a pharmaceutical form.
A heavy, bluish white metal, atomic number 81, atomic weight [204.382; 204.385], symbol Tl.
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.
Nuclear power accident that occurred following the Tohoku-Kanto earthquake of March 11, 2011 in the northern region of Japan.
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.
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)
The total amount of radiation absorbed by tissues as a result of radiotherapy.
The relationship between the dose of administered radiation and the response of the organism or tissue to the radiation.
The total amount of a chemical, metal or radioactive substance present at any time after absorption in the body of man or animal.
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.
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.
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.
Measurement of radioactivity in the entire human body.
A technetium imaging agent used to reveal blood-starved cardiac tissue during a heart attack.
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. 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.
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.
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.
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.
Units that convert some other form of energy into electrical energy.
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.
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.
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.
A metallic element with the atomic symbol Ir, atomic number 77, and atomic weight 192.22.
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.
Pollutants, present in air, which exhibit radioactivity.
Facilities that convert NUCLEAR ENERGY into electrical energy.
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.
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.
A metallic element that has the atomic symbol Bi, atomic number 83 and atomic weight 208.98.
A technetium diagnostic aid used in renal function determination.
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.
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.
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.
Unstable isotopes of thallium that decay or disintegrate emitting radiation. Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes.
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)

Effect of intravenous dextran 70 and pneumatic leg compression on incidence of postoperative pulmonary embolism. (1/1315)

The incidence of pulmonary embolism and deep vein thrombosis was measured in 50 matched pairs of patients undergoing common surgical procedures with preoperative and postoperative ventilation-perfusion lung scans and the fibrinogen uptake test. One patient in each pair was treated with intravenous dextran 70 and pneumatic leggings. The incidence of pulmonary embolism among the treated patients was significantly reduced from 24% to 8%, but the incidence of deep vein thrombosis was not significantly reduced (34% to 24%).  (+info)

Rational sequence of tests for pancreatic function. (2/1315)

Of 144 patients with suspected pancreatic disease in whom a 75Se-selenomethionine scan was performed, endoscopic retrograde pancreatography (ERP) was successful in 108 (75%). The final diagnosis is known in 100 patients and has been compared with scan and ERP findings. A normal scan reliably indicated a normal pancreas, but the scan was falsely abnormal in 30%. ERP distinguished between carcinoma and chronic pancreatitis in 84% of cases but was falsely normal in five patients with pancreatic disease. In extrahepatic biliary disease both tests tended to give falsely abnormal results. A sequence of tests to provide a rapid and reliable assessment of pancreatic function should be a radio-isotope scan, followed by ERP if the results of the scan are abnormal, and a Lundh test if the scan is abnormal but the findings on ERP are normal.  (+info)

Bruits, ophthalmodynamometry and rectilinear scanning on transient ischemic attacks. (3/1315)

One hundred seventeen patients with clinical signs and symptoms of transient ischemic attacks (TIAs) were evaluated. All underwent clinical evaluation for bruit, ophthalmodynamometry, rapid sequence scintiphotography with rectilinear scanning and four-vessel cerebral angiography. The results of these tests were compared for reliability in predicting location of lesions causing transient ischemic attacks. Angiography remains the most accurate procedure in evaluating extracranial vascular lesions. When determination of bruits, ophthalmodynamometry and brain scanning are done together, accuracy is greater than when any one of the procedures is done alone.  (+info)

Gallium-67 scintigraphy and intraabdominal sepsis. Clinical experience in 140 patients with suspected intraabdominal abscess. (4/1315)

In 140 patients with suspected intraabdominal abscess, studies were made using gallium-67 citrate and technetium-99m labeled radiopharmaceuticals. Gallium-67 scintigrams correctly localized 52 of 56 intraabdominal abscesses confirmed at surgical operation or necropsy. In an additional 20 patients in whom findings on scintigrams were abnormal, there were clinically established infections. Sixty-one patients in whom findings on scintigrams were normal were conservatively managed and discharged from the hospital; none proved to have an abscess. Four false-negative and three false-positive studies were recorded. Gallium-67 scintigraphy is a useful noninvasive diagnostic adjunct that should be employed early in the evaluation of patients with suspected intraabdominal sepsis.  (+info)

Distribution of yttrium 90 ferric hydroxide colloid and gold 198 colloid after injection into knee. (5/1315)

Thirteen knees were injected with yttrium 90(90Y) ferric hydroxide colloid, and 12 with gold 198(198Au) colloid for treatment of persistent synovitis. Retention in the knee and uptake in lymph nodes and liver were measured by a quantitative scanning technique. There was no significant difference in the retention in the knee of the two different colloids. A tendency towards higher lymph node uptake was observed with 198Au compared with 90y. The inflammatory activity of the knee at the time of treatment may have influenced the subsequent lymph node uptake of 198Au, but not that of the 90Y, nor the overall leakage of either from the knee. 90Yferric hydroxide colloid was retained in the treated knee at least as well as other colloids which have been used for this purpose.  (+info)

Economics of myocardial perfusion imaging in Europe--the EMPIRE Study. (6/1315)

BACKGROUND: Physicians use myocardial perfusion imaging to a variable extent in patients presenting with possible coronary artery disease. There are few clinical data on the most cost-effective strategy although computer models predict that routine use of myocardial perfusion imaging is cost-effective. OBJECTIVES: To measure the cost-effectiveness of four diagnostic strategies in patients newly presenting with possible coronary artery disease, and to compare cost-effectiveness in centres that routinely use myocardial perfusion imaging with those that do not. METHODS: We have studied 396 patients presenting to eight hospitals for the diagnosis of coronary artery disease. The hospitals were regular users or non-users of myocardial perfusion imaging with one of each in four countries (France, Germany, Italy, United Kingdom). Information was gathered retrospectively on presentation, investigations, complications, and clinical management, and patients were followed-up for 2 years in order to assess outcome. Pre- and post-test probabilities of coronary artery disease were computed for diagnostic tests and each test was also assigned as diagnostic or part of management. Diagnostic strategies defined were: 1: Exercise electrocardiogram/coronary angiography, 2: exercise electrocardiogram/myocardial perfusion imaging/coronary angiography, 3: myocardial perfusion imaging/coronary angiography, 4: coronary angiography. Primary outcome measures were the cost and accuracy of diagnosis, the cost of subsequent management, and clinical outcome. Secondary measures included prognostic power, normal angiography rate, and rate of angiography not followed by revascularization. RESULTS: Mean diagnostic costs per patient were: strategy 1: 490 Pounds, 2: 409 Pounds, 3: 460 Pounds, 4: 1253 Pounds (P < 0.0001). Myocardial perfusion imaging users: 529 Pounds, non-users 667 Pounds (P = 0.006). Mean probability of the presence of coronary artery disease when the final clinical diagnosis was coronary artery disease present were, strategy 1: 0.85, 2: 0.82, 3: 0.97, 4: 1.0 (P < 0.0001), users 0.93, non-users 0.88 (P = 0.02), and when coronary artery disease was absent, 1: 0.26, 2: 0.22, 3: 0.16, 4: 0.0 (P < 0.0001), users 0.21, non-users 0.20 (P = ns). Total 2-year costs (coronary artery disease present/absent) were: strategy 1: 4453 Pounds/710 Pounds, 2: 3842 Pounds/478 Pounds, 3: 3768 Pounds/574 Pounds, 4: 5599 Pounds/1475 Pounds (P < 0.05/0.0001), users: 5563 Pounds/623 Pounds, non-users: 5428 Pounds/916 Pounds (P = ns/0.001). Prognostic power at diagnosis was higher (P < 0.0001) and normal coronary angiography rate lower (P = 0.07) in the scintigraphic centres and strategies. Numbers of soft and hard cardiac events over 2 years and final symptomatic status did not differ between strategy or centre. CONCLUSION: Investigative strategies using myocardial perfusion imaging are cheaper and equally effective when compared with strategies that do not use myocardial perfusion imaging, both for cost of diagnosis and for overall 2 year management costs. Two year patient outcome is the same.  (+info)

Incidence of deep vein thrombosis and leg oedema in patients with strokes. (7/1315)

In a series of 26 patients with strokes 13 had deep vein thrombosis (DVT) in the leg, demonstrated by fibrinogen scanning. In 10 patients the thrombosis was in the paralysed leg but the degree of paralysis was unrelated to the tendency to develop DVT, which usually occurred about the third day. Leg oedema in 10 patients was unrelated to the DVT.  (+info)

Combined liver-spleen-kidney scintigraphy and subsequent subtraction of the kidney scintiphotograph in the evaluation of displaced kidney. (8/1315)

The displacement of kidney was studied by using the combined liver-spleen-kidney scintigraphy and the subsequent subtraction of the kidney scintiphotograph to leave the liver-spleen scintiphotograph alone. A suprarenal mass was shown as cold spot between the liver and right kidney on the combined study. When the liver scintiphotograph and kidney scintiphotograph were over-lapped and the differential diagnosis was difficult, the subsequent subtraction of the kidney scintiphotograph was useful in the diagnosis of the enlarged liver.  (+info)

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].
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 ...
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
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. ...
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...
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.
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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...
[170 Pages Report] Multi Camera System Market for Automotive report categorizes the global market by Level of Autonomous Driving, Vehicle Type, Function, Display Type, and Region
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
For some mood-swinging urbanites, reports Joanne Chen, talk is cheap, pills are passé, and brain scans hold the promise of a beautiful mind.
A radionuclide scan is an imaging technique that uses a small dose of a radioactive chemical (isotope) called a tracer that can detect cancer, trauma, infection…
INCAM Technology Provides Full HEVC 4K UHD Encoding, 1080p, 1080i and 720p resolutions HACKETTSTOWN, NJ, April 08, 2019 -- Vislink Technologies (Nasdaq:VISL) introduces its.
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Video from UMISR: Brain scans showing neural reactions to pro-health messages can predict if youll keep that resolution to quit smoking more accurately than you yourself can. In this video, ISR researcher Emily Falk talks about her current and future research. From APS (regarding Psychological Science article by Emily Falk, Elliot T. Berkman, and Matt Lieberman):…
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?
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...
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%.
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Provided is a camera system capable of shooting with the same operation feeling as when a camera head is attached to a camera body and shooting is performed even when the camera head and the camera body are separated. When panning or tilting is desired even when the camera head 1a and the camera body 1b are separated, the switch 19a is switched to the absolute (Abs) side and the cloud according to the posture of the camera body 1b. The stage 21a is driven so that the posture of the camera head 1a can be adjusted. [Selection] Figure 3
Read user reviews, compare products and contact manufacturers of Scintillation products, including particle counters, scintillation counters and radiometers on SelectScience.
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.
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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
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?
Researchers report that brain scans can help predict how people will perform a challenging mental task, a discovery that could lead to a better understanding of
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Figure 3 - Perfusion scintigram showing multiple areas with absent perfusion (arrows) in a patient with pulmonary emboli. Reproduced from Bajc, 2012 ...
US diplomats in Havana reported a mysterious illness in 2016, but it was unclear if the effects were psychosomatic. Now scans suggest their brains have changed
Last week, we noted along with many news outlets that a biomarker had been apparently discovered for PTSD. The researchers claimed they had a new tool to help
Im actually surprised I didnt give a serious response to this thread. I happen to find a lot of p words to be cool and rather useful: pulchritude, priggish, paphian, palliate, prate, phlegmatic, pule, perinium... There just isnt a good time to use them without seeming pretentious or pedantic. ): Lignious, velocious, fastidious, calefaction, scintillation, bilious, victuals or comestibles. Algid, estival, summarily, sanguinary, and lascivious or licentious. Osculate, ameliorate, exacerbate, masticate, recondite or obfuscate. o ...
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 ...
2017 Chronic Dry Eye Nutrition Contacts Dry Eye Relief A Doctor Weighs In On Nutrition And Dry Eye Blog - 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.. ...
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.. ...
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 ...
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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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 to less than one-fourth of the nonischemic site (P less ...
Read about how endosonography to determine chest metastasis in lung cancer did not improve survival, although the method was more sensitive in detection.
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.
Objective: The purpose of this study was to evaluate whether ultrasound allows precise assessment of a focal defect at the lateral patellar retinaculum (LPR) and to determine its anatomical significance. Materials and methods: This work was initially undertaken in four cadaveric specimens and followed by high-resolution ultrasound study in 48 healthy adult volunteers (96 knees) by two musculoskeletal radiologists. Dimension and location of the LPR defect and its relations to adjacent anatomical structures were analyzed. Results: A focal defect of the LPR through which vessels penetrated was constantly identified by ultrasound in our population. The mean transverse diameter of the defect was 2.4 mm (range, 1-6 mm). The defect was located a mean of 23.7 mm (range, 18-30 mm) proximal to the lateral tibial plateau and 6.6 mm (range, 4-9 mm) lateral to the patellar tendon. Anatomical dissection demonstrated that the LPR defect is related to perforating vessels that originate from the peripatellar ...
Collimator assemblies that include an outer slit collimator having one or more slits therein, and an inner slit collimator having one or more slits therein are provided. Imaging systems that include a collimator assembly and a detector array are also provided. The collimator assembly includes an outer slit collimator having one or more slits therein. The collimator assembly further includes an inner slit collimator having one or more slits therein. The imaging system also includes a detector array configured to detect gamma rays emanating from a field of view that pass through one or more apertures defined by the collimator assembly. The detector array is further configured to generate one or more signals in response to the detected gamma rays. Methods of imaging a field of view using the imaging system are also provided.
Looking for online definition of radionuclide cineangiocardiography in the Medical Dictionary? radionuclide cineangiocardiography explanation free. What is radionuclide cineangiocardiography? Meaning of radionuclide cineangiocardiography medical term. What does radionuclide cineangiocardiography mean?
A Memorial Medical Imaging Services liver scan is performed to determine liver size, configuration and position in the body and to detect pathology such as cirrhosis, tumors or abscesses.
Purpose: To obtain an analytical empirical formula for the photon dose source term in forward direction from bremsstrahlung generated from laser-plasma accelerated electron beams in aluminum solid targets, with electron-plasma temperatures in the 10-100 keV energy range, and to calculate transmission factors for iron, aluminum, methacrylate, lead and concrete and air, materials most commonly found in vacuum chamber labs. Methods: Bremsstrahlung fluence is calculated from the convolution of thin-target bremsstrahlung spectrum for monoenergetic electrons and the relativistic Maxwell-Juettner energy distribution for the electron-plasma. Unattenuatted dose in tissue is calculated by integrating the photon spectrum with the mass-energy absorption coefficient. For the attenuated dose, energy dependent absorption coefficient, build-up factors and finite shielding correction factors were also taken into account. For the source term we use a modified formula from Hayashi et al., and we fitted the ...
Its time for you to play doctor (or if you are a doctor, prove your skill) by making the correct answer on the New England Journal of Medicine Image Challenge. What does this patient have ...
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A gamma camera is a piece of medical equipment that can detect gamma radiation. Doctors typically use gamma cameras for imaging...
Free intraperitoneal gas and fluid containing the ingested contrast (arrow) adjacent to the liver with a focal defect in the superior duodenum leaking contrast (indicative of a perforated ulcer). Note thick-walled, enhancing small bowel indicative of so-called shock bowel due to systemic hypotension. ...
Sierra-Olympic released a new uncooled LWIR camera system designed for machine vision, process monitoring, and benchtop R&D applications. The Cox ...
Cameras and Accessories View cameras come in a variety of sizes, ranging in inches from 2 1/4″ x 3 1/4″ up to 11 x 14 formats. There are larger models, but those are usually used only for special-purpose photography because of the limits imposed by their massive size and weight. The two most popular sizes are 4×5 and 8 x 10. All monorail cameras are modular in design. These can be specifically configured in terms of bellows, monorail length, and type of back and front components to serve a wide variety of photographic needs. … PDF: Cameras and Accessories Definitions The view camera is unique because its lens and back are Read more. ...
dotc writes After a bunch of sci-fi stories and rumors, now it looks like the future has become a reality -- a reliable, unbiased test using functional MRI brain scan to detect lying. The article author details a first-person account of undergoing the MRI deception task. And the test is availabl...
The state-of-the-art brain scans that allowed doctors to look inside the head of former Israeli Prime Minister Ariel Sharon show how advances in neuroscience are forcing a rethink of what it means to be in a long-term coma.
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Since the launch of imaging cameras that are based on a sCMOS sensor there has been much speculation about whether or not sCMOS will replace for interline CCD and EMCCD cameras. This note provides an analysis of how these sensitive imaging technologies compare.
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During your experiments, have you wanted to take images of each slice before they are cut? We now have a block-face imaging camera system for the Compresstome vibrating microtome that capture slice-by-slice images as you make tissue sections. Shown above are mouse brain slices being cut, with individual images taken after each slice. Working in ...
Researchers say they are one step closer to developing a biological test for autism after a study showed the disorder could be identified with 94 percent accuracy using a MRI.
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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. ...
Radionuclide and hybrid bone imaging (PDF). Berlin: Springer. pp. 29-57. ISBN 978-3-642-02399-6. Bone histology ... 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 ...
De Boeck K, Van Eldere S, De Vos P, Mortelmans L, Casteels-Van Daele M (January 1991). "Radionuclide bone imaging in toddler's ... In some cases, an internal oblique radiography and radionuclide imaging can add information to anterior-posterior and lateral ... The initial radiographical images may be inconspicuous (a faint oblique line) and often even completely normal. After 1-2 weeks ...
"The role of radionuclide myocardial perfusion imaging for asymptomatic individuals". Journal of Nuclear Cardiology. 18 (1): 3- ... echocardiogram images are obtained. The two echocardiogram images are then compared to assess for any abnormalities in wall ... The images obtained are similar to the ones obtained during a full surface echocardiogram, commonly referred to as ... A stress test may also use an echocardiogram (ultrasonic imaging of the heart) or a nuclear stress test (in which a ...
"Radionuclides delivery systems for nuclear imaging and radiotherapy of cancer". Advanced Drug Delivery Reviews. 60 (12): 1329- ... Nuclear imaging is non-invasive and has high sensitivity, and nanoparticles are useful as a platform for combining multiple ... There may also be hazards from associated processes such as strong magnetic fields and cryogens used in imaging equipment, and ... The main source of naturally occurring nanomaterials containing radionuclides is the decay of radon gas, whose immediate decay ...
... echocardiography Radionuclide imaging Endomyocardial biopsy Cardiac magnetic resonance imaging (CMR) N-terminal pro-B-type ... Radionuclide imaging can be used as a non-invasive test to detect myocardial ischemia. Cardiac MRI has also been used to ...
"ACCF/ASNC/ACR/AHA/ASE/SCCT/SCMR/SNM 2009 Appropriate Use Criteria for Cardiac Radionuclide Imaging". Journal of the American ... Imaging; Society for Cardiovascular Angiography and, Interventions; Society for Cardiovascular Magnetic, Resonance; Kramer, CM ... a scientific statement from the American Heart Association Committee on Cardiovascular Imaging and Intervention, Council on ... the North American Society for Cardiovascular Imaging, the Society for Cardiovascular Angiography and Interventions, and the ...
These make possible the production of various radionuclides needed to image different parts of the body. Neurosciences It is ...
Imaging tests such as stress radionuclide myocardial perfusion imaging or stress echocardiography can confirm a diagnosis when ... "ACCF/ASNC/ACR/AHA/ASE/SCCT/SCMR/SNM 2009 Appropriate Use Criteria for Cardiac Radionuclide Imaging". Journal of the American ... It should be determined if a person is at high risk for myocardial infarction before conducting imaging tests to make a ... People who have a normal ECG and who are able to exercise, for example, do not merit routine imaging. ...
"ACCF/ASNC/ACR/AHA/ASE/SCCT/SCMR/SNM 2009 Appropriate Use Criteria for Cardiac Radionuclide Imaging". Journal of the American ... Whereas cardiac imaging often confirms a diagnosis, simpler and less expensive cardiac biomarker measurements can advise a ...
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 ... Practical Molecular Imaging and Radionuclide Therapies. Society of Nuclear Medicine, January 2007. ISBN 978-0-9726478-8-5 Ell P ...
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; ...
... s composed of dextran have been developed for imaging tumor-associated macrophages with radionuclides and targeting the ... Potential applications of nanogels include drug delivery agents, contrast agents for medical imaging, nanoactuators, and ... "89Zr-Labeled Dextran Nanoparticles Allow in Vivo Macrophage Imaging". Bioconjugate Chemistry. 22 (12): 2383-9. doi:10.1021/ ... "Nanogel-quantum dot hybrid nanoparticles for live cell imaging". Biochemical and Biophysical Research Communications. 331 (4): ...
It produces hyperemia quickly and maintains it for a duration that is useful for radionuclide myocardial perfusion imaging. The ...
... and scintigraphic and emission tomographic imaging. The gamma radiation emitted by the radionuclide allows organs to be imaged ... Na[99mTcO4] is a precursor to a variety of derivatives that are used to image different parts of the body. [TcO4]− is the ... If there is a high activity in organs adjacent to the one under investigation, the image of the target organ can be obscured. ... is focused on sections or planes in order to image the spatial distribution of the 99mTc. 99mTc is used primarily in the study ...
The limitations apply to all imaging modalities, including plain radiography, radionuclide studies, CT scans, and magnetic ... It is certainly not visible clinically and routine imaging techniques such as radiographs are not effective for that sort of ... with the help of various imaging modality, can be achieved earlier, in most patients. In the modern dental profession, it is ... resonance imaging (MRI). Through-transmission alveolar ultrasound, based on quantitative ultrasound (QUS) in combination with ...
His work included the integration of functional radionuclide imaging and treatment which assisted in providing personalized ... Breast Cancer Imaging I: Number 3, Breast Cancer Imaging II: Pet Clinics, Radiation Therapy Planning with PET: Number 2, Modern ... The Society of Nuclear Medicine and Molecular Imaging selected oe of his articles, Beta-cell Imaging: Opportunities and ... He is an associate editor of Current Molecular Imaging journal and a member of the editorial boards of European Journal of ...
Initially it provides a radionuclide angiogram, followed by a static image after the radionuclide has perfused the tissue. In ... Radionuclide scanning of the scrotum is the most accurate, imaging technique, but it is not routinely available, particularly ... RR-12 Medscape > Testicular Torsion Imaging Archived 2012-06-27 at the Wayback Machine. by David Paushter. Updated: May 25, ... the healthy patient, initial images show symmetric flow to the testes, and delayed images show uniformly symmetric activity. ...
Diagnosis is made by comparing stress images to a further set of images obtained at rest. As the radionuclide redistributes ... Initially it provides a radionuclide angiogram, followed by a static image after the radionuclide has perfused the tissue. In ... if stress imaging is normal, it is unnecessary to perform rest imaging, as it too will be normal - thus stress imaging is ... Radionuclide scanning of the scrotum is the most accurate imaging technique to diagnose testicular torsion, but it is not ...
... for imaging with a gamma camera. It is approved for the imaging of infections and inflammations in patients with suspected ... Technetium (99mTc) sulesomab (trade name LeukoScan) is a mouse monoclonal antibody labelled with technetium-99m, a radionuclide ...
Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... In general, fMRI studies acquire both many functional images with fMRI and a structural image with MRI. The structural image is ... This could be either those sections of the image that repeat often in a spatial map (that is small clusters dotting the image ... This spiral imaging sequence acquires images faster than gradient-echo sequences, but needs more math transformations (and ...
... life of approximately 13 hours and a gamma photon energy of 159 keV making it an appropriate radionuclide for medical imaging. ... It is injected into a patient and viewed with a gamma camera in order to acquire SPECT images of the brain with particular ... Ioflupane (123I) is the International Nonproprietary Name of a phenyltropane compound which is a neuro-imaging ... "SNM Practice Guideline for Dopamine Transporter Imaging with 123I-Ioflupane SPECT 1.0". Journal of Nuclear Medicine. 53 (1): ...
He is known for his and his colleagues' work in the development of radionuclide imaging, magnetic resonance imaging (MRI) and, ...
The pinhole: gateway to ultra-high-resolution three-dimensional radionuclide imaging. Eur J Nucl Med Mol Imaging. 2007; 34(2): ... special imaging sequences in MRI) or to try to image a subject using multiple imaging modalities. Following the multimodality ... image acquisitions. Medical imaging encompasses many different imaging modalities, which can roughly be divided into anatomical ... Preclinical or small-animal Single Photon Emission Computed Tomography (SPECT) is a radionuclide based molecular imaging ...
In addition, 64Cu is a positron emitter making it a viable PET imaging radionuclide which can give real time images of the ... Nuclear medicine Radioactive tracer Radionuclide Radiopharmacology Bé, M.-M; Chisté, V; Dulieu, C; Mougeot, X; Chechev, V; ... Parry, Jesse J.; Andrews, Rebecca; Rogers, Buck E. (13 July 2006). "MicroPET Imaging of Breast Cancer Using Radiolabeled ... Table of radionuclides (Volume 6). Sèvres: BIPM. p. 13. ISBN 978-92-822-2242-3. Welch, Michael; Redvanly, Carol S. (2003). ...
It is a radionuclide that is inhaled to assess pulmonary function, and to image the lungs. It is also used to image blood flow ... Hoshi, H.; Jinnouchi, S.; Watanabe, K.; Onishi, T.; Uwada, O.; Nakano, S.; Kinoshita, K. (1987). "Cerebral blood flow imaging ... see iodine pit for more information Primordial radionuclide The isotopic composition refers to that in air. Geologically ...
... which relies on radionuclide imaging of the blood vessels of the lung. It is regarded as a highly sensitive and specific test ... Images are acquired with the maximum intensity of radio-opaque contrast in the pulmonary arteries. This can be done using bolus ... Its main use is to diagnose pulmonary embolism (PE). It is a preferred choice of imaging in the diagnosis of PE due to its ... Modern MDCT (multi-detector CT) scanners are able to deliver images of sufficient resolution within a short time period, such ...
"Radionuclide labeling and evaluation of candidate radioligands for PET imaging of histone deacetylase in the brain". Bioorganic ... The production and imaging facility - part of the Martinos Center Research Core - provides imaging tools for all stages of ... The human imaging report was built on a background of tool development in the Hooker lab spanning seven years, wherein small ... The first-in-human imaging paper set the stage for Dr. Hooker's ongoing work to measure and map HDAC density, distribution and ...
... with alpha-particle emitting radionuclides. Q J Nucl Med Mol Imaging. 2004 Dec;48(4):289-96. Burke JM, ... Q J Nucl Med Mol Imaging. 2004 Dec;48(4):297-304. Dadachova E, Nosanchuk JD, Shi L, Schweitzer AD, Frenkel A, Nosanchuk JS, and ... Radioimmunotherapy (RIT) uses an antibody labeled with a radionuclide to deliver cytotoxic radiation to a target cell. In ...
... the image obtained by a gamma camera is a 2-D view of 3-D distribution of a radionuclide. SPECT imaging is performed by using a ... Emissions from the radionuclide indicate amounts of blood flow in the capillaries of the imaged regions. In the same way that a ... tumor imaging, infection (leukocyte) imaging, thyroid imaging or bone scintigraphy. Because SPECT permits accurate localisation ... such as functional cardiac or brain imaging. Myocardial perfusion imaging (MPI) is a form of functional cardiac imaging, used ...
Small animal imagingEdit. PET technology for small animal imaging: A miniature PE tomograph has been constructed that is small ... Radionuclides used in PET scanning are typically isotopes with short half-lives[3] such as carbon-11 (~20 min), nitrogen-13 (~ ... PET imaging is best performed using a dedicated PET scanner. It is also possible to acquire PET images using a conventional ... Musculo-skeletal imagingEdit. Musculoskeletal imaging: PET has been shown to be a feasible technique for studying skeletal ...
Diagnostic radiology is concerned with imaging of the body, e.g. by x-rays, x-ray computed tomography, ultrasonography, and ... and a radionuclide (usually either a gamma-emitter or a positron emitter). There is a degree of overlap between nuclear ... The treatment plan may include ordering additional medical laboratory tests and medical imaging studies, starting therapy, ... Interventional radiologists can access areas in the body under imaging for an intervention or diagnostic sampling. ...
Image quality[edit]. Image quality will depend on resolution and density. Resolution is the ability an image to show closely ... Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... It is not used for bone imaging, as the image quality is not good enough to make an accurate diagnostic image for fractures, ... Other medical imaging[edit]. Although not technically radiographic techniques due to not using X-rays, imaging modalities such ...
Text and images are available under a Creative Commons Attribution 4.0 International License. ... the global distribution of radionuclides, organic pollutants and mercury, and ecosystem disturbances of terrestrial and marine ...
"Radionuclide Half-Life Measurements". Retrieved 7 November 2011.. *^ Radioisotope Brief: Cesium-137 (Cs-137). U.S. National ... visible in Argentina image). ... Radionuclide and Radiation Protection Data Handbook 2002 (2nd ...
... (CTLM) is the trademark of Imaging Diagnostic Systems, Inc. (IDSI, United States) for its ... Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... This medical imaging technique uses laser energy in the near infrared region of the spectrum, to detect angiogenesis in the ... CTLM images show hemoglobin distribution in a tissue and can detect areas of Angiogenesis surrounding malignant tumors, that ...
Imaging and recording systemsEdit. This section covers imaging and recording systems. The general section covers history, ... Positron-emitting radionuclide (tracer). See Positron emission tomography. *Altanserin a compound that binds to a serotonin ... Functional magnetic resonance imaging (fMRI). *Medical image computing (brain research of leads medical and surgical uses of ... Positron emission tomography (PET) a nuclear medical imaging technique that produces a three-dimensional image or picture of ...
The advent of new imaging technologies, including magnetic resonance imaging (MRI) in the 1970s and positron emission ... peptide receptor radionuclide therapy). ... More recently other forms of imaging are used including MRI, ... real-time imaging combined with real-time adjustment of the therapeutic beams. This new technology is called image-guided ... This is because physicians must manually delineate the tumors one CT image at a time through the entire disease site which can ...
Medical imaging. Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. * ...
Whole body imaging(英语:Whole body imaging) *Full-body CT scan(英语:Full-body CT scan) ... Radionuclide ventriculography(英语:Radionuclide ventriculography). *Radionuclide angiography(英语:Radionuclide angiography) ... 光学(英语:Optical imaging)激光. *Optical tomography(英语:Optical tomography) *光学相干断层扫描 ... MRI of the brain(英语:Magnetic resonance imaging of the
The image produced by this type of medical imaging, called a cholescintigram, is also known by other names depending on which ... Most radiotracers for cholescintigraphy are metal complexes of iminodiacetic acid (IDA) with a radionuclide, usually technetium ... L. Santiago Medina; C. Craig Blackmore; Kimberly Applegate (29 April 2011). Evidence-Based Imaging: Improving the Quality of ... Cholescintigraphic scans are not generally a first-line form of imaging owing to their increased cost and invasiveness.[3] ...
... using sunspots for the past 400 years or cosmogenic radionuclides for going back 10,000 years. Such reconstructions have been ... This photo of a Martian sunset was imaged by Mars Pathfinder.. Different bodies of the Solar System receive light of an ...
A retrograde urethrogram is a routine radiologic procedure (most typically in males) used to image the integrity of the urethra ... Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... Medical imaging (ICD-9-CM V3 87-88, ICD-10-PCS B, CPT 70010-79999) ...
Myocardial perfusion imaging. Cardiovascular MRI. Ventriculography Radionuclide ventriculography. Cardiac catheterization/ ...
... allowing faster image acquisition: four images per second with 512 lines each. Hugely magnified intermediate images, due to a 1 ... Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... The Development of a Modern Microscopy". Imaging & Microscopy.. online. *^ a b c Barry R. Masters: Confocal Microscopy And ... C.J.R. Sheppard, A. Choudhury: Image Formation in the Scanning Microscope. In: Optica Acta: International Journal of Optics. 24 ...
Very low levels of radionuclides could be attributed to releases from the accident. Comprehensive investigations and ... Pages using deprecated image syntax. *All articles with unsourced statements. *Articles with unsourced statements from March ...
"Image Gently". Alliance for Radiation Safety in Pediatric Imaging (the Image Gently Alliance). Retrieved ... those in laboratories using radionuclides, and HAZMAT teams are required to wear dosimeters so a record of occupational ... "An Appeal for Safe and Appropriate Imaging of Children". Journal of Patient Safety. 10 (3): 121-124. doi:10.1097/pts. ... "Review on the characteristics of radiation detectors for dosimetry and imaging". Physics in Medicine and Biology. 59: R303-R347 ...
Tuniz, C.; Zoppi, U.; Barbetti, M. (2004). "Radionuclide dating in archaeology by accelerator mass spectrometry". In Martini, M ... a piece of linen cloth thought by some to bear an image of Jesus Christ after his crucifixion. Three separate laboratories ... Šilar, Jan (2004). "Application of environmental radionuclides in radiochronology: Radiocarbon". In Tykva, Richard; Berg, ...
Emissions from the radionuclide indicate amounts of blood flow in the capillaries of the imaged regions. In the same way that a ... Main article: Myocardial perfusion imaging. Myocardial perfusion imaging (MPI) is a form of functional cardiac imaging, used ... tumor imaging, infection (leukocyte) imaging, thyroid imaging or bone scintigraphy. ... SPECT imaging is performed by using a gamma camera to acquire multiple 2-D images (also called projections), from multiple ...
... magnetic resonance imaging, ultrasound imaging, endoscopy and capsule endoscopy,[7] barium contrast imaging remains in common ... Radionuclide ventriculography. *Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. * ... providing better imaging conditions and in this case the procedure is called double-contrast imaging.[9] ... Types of barium-contrast imaging[edit]. Barium meal examination showing the stomach and duodenum in double contrast technique ...
The long-lived radionuclides 92Nb, 97Tc, 98Tc and 146Sm are not among the classically defined p-nuclei as they no longer occur ... Katzman Automatic Imaging Telescope. *Monte Agliale Supernovae and Asteroid Survey. *Nearby Supernova Factory ... If there is a high proton density in the stellar plasma, even short-lived radionuclides can capture one or more protons before ... long-lived radionuclide; not a classical p-nucleus but cannot be made in s- and r-processes ...
Also, a radionuclide cerebral blood flow scan that shows complete absence of intracranial blood flow must be considered with ... In particular, there must be definite clinical or neuro-imaging evidence of acute brain pathology (e.g. traumatic brain injury ... Radionuclide scan: No intracranial blood flow. The "hot-nose" sign is shown. ...
Radioactive nuclei (radionuclides) commonly emit gamma rays in the energy range from a few keV to ~10 MeV, corresponding to the ... Hyperspectral imaging. *Inelastic electron tunneling spectroscopy. *Inelastic neutron scattering. *Laser-Induced Breakdown ...
... seismologists have been able to create detailed images of wave speeds inside the earth in the same way a doctor images a body ... Optically stimulated luminescence and cosmogenic radionuclide dating are used to date surfaces and/or erosion rates. ... These images have led to a much more detailed view of the interior of the Earth, and have replaced the simplified layered model ... Seismologists can use the arrival times of seismic waves in reverse to image the interior of the Earth. Early advances in this ...
RNT contrasts with sealed-source therapy (brachytherapy) where the radionuclide remains in a capsule or metal wire during ... European Journal of Nuclear Medicine and Molecular Imaging. 34 (8): 1324-1327. doi:10.1007/s00259-007-0407-4. PMID 17396258. ... p. 7. IAEA; ICRP (2009). Release of patients after radionuclide therapy. Vienna, Austria: International Atomic Energy Agency. ... Nicol, Alice; Waddington, Wendy (2011). Dosimetry for radionuclide therapy. York: Institute of Physics and Engineering in ...
These isotopes are used in positron emission tomography, a technique used for medical imaging. Note that the energy emitted ... in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino ... Positron Emission Tomography Imaging at the University of British Columbia (accessed 11 May 2012) ... radionuclides. Positron decay results in nuclear transmutation, changing an atom of one chemical element into an atom of an ...
"Diagnostic Imaging. ... ina radionuclide florini-18 ya kudumu, viliundwa hivi karibuni, na kufanyiwa majaribio kama chombo kinachoweza kutumika katika ... Molecular Imaging and Contrast Agent Database. Iliwekwa mnamo 2010-06-24. *↑ Kolata G. "Promise Seen for Detection of ... O'Brien JT (2007 Dec). "Role of imaging techniques in the diagnosis of dementia". Br J Radiol 80 (Spec No 2): S71-7. doi: ...
Myocardial perfusion imaging. Cardiovascular MRI. Ventriculography Radionuclide ventriculography. Cardiac catheterization/ ...
Ultrasonic molecular imaging is safer than molecular imaging modalities such as radionuclide imaging because it does not ... Ultrasound imaging allows real-time evaluation of blood flow.[20]. *Destruction of microbubbles by ultrasound[21] in the image ... which is the measure of the negative acoustic pressure of the ultrasound imaging system. Increasing MI increases image quality ... Alternative molecular imaging modalities, such as MRI, PET, and SPECT are very costly. Ultrasound, on the other hand, is very ...
The gallbladder radionuclide scan is performed by injecting a tracer (radioactive chemical) into the bloodstream. A gamma ... The camera will detect the gamma rays being emitted from the tracer, and the image of where the tracer is found in the organs ... The gallbladder radionuclide scan is performed by injecting a tracer (radioactive chemical) into the bloodstream. A gamma ...
Information about the open-access journal Molecular Imaging and Radionuclide Therapy in DOAJ. DOAJ is an online directory that ... Publishers keywords: radionuclide therapy, radionuclide imaging, perfusion imaging, scintigraphy, positron-emission tomography ...
Imaging is usually performed 18-72 hours after injection and is often performed in conjunction with radionuclide bone imaging. ... Labeled leukocyte imaging is the radionuclide procedure of choice in cases of "complicating osteomyelitis", and is the imaging ... Love, C., Palestro, C. J. (2004), Radionuclide imaging of infection. J Nucl Med Tech., 32, 47-57. [ Links ]. Love, C., Marwin, ... Gemmel, F., Dumarey, N., Palestro, C .J. (2006), Radionuclide imaging of spinal infections. Eur J Nucl Med Mol Imag., 33, 1226- ...
"Radionuclide Imaging" by people in Harvard Catalyst Profiles by year, and whether "Radionuclide Imaging" was a major or minor ... "Radionuclide Imaging" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has ... The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called ...
The noninvasive localization of ventricular pacing sites by radionuclide phase imaging.. T M Bashore, R A Stine, P B Shaffer, C ... The noninvasive localization of ventricular pacing sites by radionuclide phase imaging.. T M Bashore, R A Stine, P B Shaffer, C ... The noninvasive localization of ventricular pacing sites by radionuclide phase imaging.. T M Bashore, R A Stine, P B Shaffer, C ... This study was designed to investigate the potential role of radionuclide angiographic phase imaging in defining ventricular ...
... covering all areas of imaging technologies with a special emphasis on MRI. ... An exciting journal in the area of contrast agents and molecular imaging, ... radionuclide state-of-the-art imaging," European Journal of Nuclear Medicine and Molecular Imaging, vol. 39, no. 5, pp. 892-909 ... I. Velikyan, "Radionuclides for Imaging and Therapy in Oncology," Cancer Theranostics, pp. 285-325, 2014. View at Publisher · ...
The effectiveness of sequential imaging of early regional left ventricular contraction in the detection of ischémie ... Detection of early systolic dysfunction in ischemia by sequential radionuclide imaging of ejection rates. *Nikolaus Schad1. , ... Functional cardiac imaging in coronary disease: Increased sensitivity of first-pass radionuclide angiography utilizing ... Diagnostic accuracy of sequential images (67-91%) was higher than that of ejection rate image (71-72%), and of global ...
... covering all areas of imaging technologies with a special emphasis on MRI. ... An exciting journal in the area of contrast agents and molecular imaging, ... Prospective of 68Ga Radionuclide Contribution to the Development of Imaging Agents for Infection and Inflammation. Irina ... Irina Velikyan, "Prospective of 68Ga Radionuclide Contribution to the Development of Imaging Agents for Infection and ...
... measurement and imaging tools related to radiation emergencies. This includes the Internal Contamination Assessment Tool or ... Use of Radiation Detection, Measuring, and Imaging Instruments to Assess Internal Contamination from Intakes of Radionuclides. ... Instructions for Using Gamma Cameras to Assess Internal Contamination from Intakes of Radionuclidespdf icon(1.5 MB/37 pages) ...
Radionuclide thyroid imaging study. Known as: imaging thyroid, scans thyroid, Thyroid scan and radioisotope function studies ... Ultrasound is the most commonly used imaging technique for the evaluation of thyroid nodules. Sonographic findings are often ... Thyroid Ultrasound Reporting Lexicon: White Paper of the ACR Thyroid Imaging, Reporting and Data System (TIRADS) Committee. ...
NOGA Angiogenesis Revascularization Therapy: Evaluation by RadioNuclide Imaging - The Northern Trial. The safety and scientific ...
Radiography, CT, MRI, and Radionuclide Imaging. Plain radiography is generally nonspecific and may reveal only a joint effusion ... Magnetic resonance imaging (MRI) is most useful in assessing the presence of periarticular osteomyelitis as a causative ... Radionuclide studies (eg, bone scans) yield positive results for any inflammatory arthritis and thus have poor specificity. ...
The field of radionuclide imaging is broadening, and in addition to anatomical imaging, radionuclide imaging also has the ... Radionuclide Molecular Imaging in Heart Failure Apr 09, 2015 , Mark I. Travin, M.D., FACC; Donna M. Polk, MD, MPH, FACC Expert ... and often tomographic images as well. 123I-mIBG imaging is frequently accompanied by rest perfusion imaging at another time to ... Radionuclide imaging has traditionally been used to evaluate the etiology of HF, whether ischemic or non-ischemic and to ...
b. Radionuclide Imaging After Percutaneous Coronary Intervention. The ACC/AHA 2002 Guideline Update for Exercise Testing22 ... c. Radionuclide Imaging After Coronary Artery Bypass Graft Surgery. Myocardial perfusion scintigraphy can be useful in ... a. Radionuclide Imaging Before Revascularization Interventions. When there is uncertainty with regard to the appropriate choice ... Radionuclide Imaging Before Noncardiac Surgery. The ACC/AHA Guideline Update for Perioperative Cardiac Evaluation for ...
This peptide is also potentially useful for imaging cardiac disease.. "We believe this PET/MRI imaging technology can be of ... two radionuclides that can be used, respectively, for positron-emission tomography (PET) and magnetic resonance imaging (MRI). ... We hope this labeling with F-18 and F-19 could enable a dual-imaging approach, whereby the strengths of PET and MRI can be ... "In addition, the patent now covers the same labeling with F-19, which can be used for MRI, another major imaging modality for ...
"U-SPECT-BioFluo: an integrated radionuclide, bioluminescence, and fluorescence imaging platform." EJNMMI Research 4 (1): 56. ... Next to an optimization in logistics and image fusion, this integration can help improve understanding of the optical imaging ( ... integration of these modalities helps to improve data interpretation of optical findings in relation to radionuclide images. ... Bioluminescence imaging (BLI) was compared to the localization of the fluorescence signal in the tumors. Results: Both the ...
... measurement and imaging tools related to radiation emergencies. This includes the Internal Contamination Assessment Tool or ... Use of Radiation Detection, Measuring, and Imaging Instruments to Assess Internal Contamination from Intakes of Radionuclides. ... Instructions for Using Gamma Cameras to Assess Internal Contamination from Intakes of Radionuclidespdf icon(1.5 MB/37 pages) ... Use of Radiation Detection, Measuring, and Imaging Instruments. * Virtual Community Reception Center (vCRC) ...
Information on terrorism and public health. Provided by the Centers for Disease Control and Prevention (CDC).
Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging Jeffrey M. Levsky, MD, PhD; Mark I. ... According to the most recent appropriate use criteria for cardiac radionuclide imaging (described in indications 6 to 9 of ... Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging. Ann Intern Med. 2016;164:133-134. ... Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging in Patients With Chest Pain Admitted ...
... is seeking applications from highly motivated candidates for a Postdoc position in molecular imaging and therapy using novel ... Postdoc (f/m) Molecular imaging and radionuclide therapy in prostate cancer. Veröffentlicht am 14. Dezember 2017 (vor 37 ... "Molecular imaging and radionuclide therapy in prostate cancer" Description:. The Technische Universität München (TUM) is ... in the SFB 824 is focussed on therapy assessment in prostate cancer using novel probes for PET-imaging and radionuclide therapy ...
Nuclear Medicine Imaging of Right Upper Extremity using Other Radionuclide is a medical classification ...
Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging in Clinical Evaluation of Chest Pain ... Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging in Patients With Chest Pain Admitted ... In the evaluation of patients with chest pain, whether any imaging is warranted rather than exercise stress testing alone ... admitted to a telemetry floor were randomized to either CCTA or myocardial perfusion imaging (MPI) and followed for 40 months. ...
Comparison of radionuclide angiographic synchrony analysis to echocardiography and magnetic resonance imaging for the diagnosis ... These findings suggest that ERNA may serve as a valuable imaging tool in the diagnostic evaluation of patients with suspected ... We evaluated the role of equilibrium radionuclide angiography (ERNA) as a diagnostic tool for ARVC. ...
Echocardiography and radionuclide imaging were performed within 2 hours of each another, 5 to 8 days after hospital admission. ... Comparison of different echocardiographic methods with radionuclide imaging for measuring left ventricular ejection fraction ... compare these measurements with the reference method radionuclide imaging; and (3) evaluate the reproducibility of visual ... LV wall motion score index and visual estimation of the EF correlated best with the radionuclide EF (r = 0.72 and r = 0.71), ...
Clinical outcomes following coronary CT angiography are comparable to radionuclide myocardial perfusion imaging for ethnically ... Clinical outcomes following coronary CT angiography are comparable to radionuclide myocardial perfusion imaging for ethnically ... Clinical outcomes following coronary CT angiography are comparable to radionuclide myocardial perfusion imaging for ethnically ...
Home , Riviste , The Quarterly Journal of Nuclear Medicine and Molecular Imaging , Fascicoli precedenti , The Quarterly Journal ... Radionuclide therapy and integrated protocols for bone metastases. Chiacchio S. 1, Mazzarri S. 1, Lorenzoni A. 1, Nyakale N. E ... of Nuclear Medicine and Molecular imaging 2011 August;55(4) , The Quarterly Journal of Nuclear Medicine and Molecular imaging ... The Quarterly Journal of Nuclear Medicine and Molecular imaging 2011 August;55(4):431-47. Copyright © 2011 EDIZIONI MINERVA ...
Comparative Evaluation of Radioiodine and Technetium-Labeled DARPin 9_29 for Radionuclide Molecular Imaging of HER2 Expression ... Radionuclide molecular imaging of HER2 expression might permit stratification of patients for HER2-targeting therapies. In this ... Contrast Media & Molecular Imaging Om emnet. Søk utenfor DiVA. GoogleGoogle Scholar. ... 2018 (engelsk)Inngår i: Contrast Media & Molecular Imaging, ISSN 1555-4309, E-ISSN 1555-4317, artikkel-id 6930425Artikkel i ...
Perfusion CT best predicts outcome after radioembolization of liver metastases: a comparison of radionuclide and CT imaging ... Perfusion CT best predicts outcome after radioembolization of liver metastases: a comparison of radionuclide and CT imaging ...
Radionuclide Thyroid Imaging in 135 Cats with Hyperthyroidism. by Michael R. Broome, DVM, MS, Dipl. ABVP , posted in: ... In normal and hyperthyroid cats the radionuclide images produced with 99mTcO4 and 131I were similar; however, the quality of ... enlargement and increased radionuclide accumulation were found in one thyroid lobe in 38 (27%) and in both lobes in 97 (73%). ...
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. ... Cardiac radionuclide imaging to assess patients with heart failure. Sem Nucl Med. 2014 doi: 10.1053/j.semnuclmed.2014.04.005 ...
  • The three-phase bone scan consists of the flow or perfusion phase, acquired immediately after tracer injection, followed immediately by an image of the region of interest, the blood pool or soft-tissue phase. (
  • 123 I- m IBG imaging is frequently accompanied by rest perfusion imaging at another time to relate regional adrenergic function to perfusion. (
  • Levsky JM, Travin MI, Haramati LB. Coronary Computed Tomography Angiography Versus Radionuclide Myocardial Perfusion Imaging. (
  • In this single-center randomized, controlled comparative effectiveness trial, 400 intermediate-risk patients (63% women, 54% Hispanic, 37% African-American) admitted to a telemetry floor were randomized to either CCTA or myocardial perfusion imaging (MPI) and followed for 40 months. (
  • Abnormal perfusion images may be observed in balanced ischaemia cases with triple vessel disease and also in cases with insufficient stress test (7). (
  • Synthesis of 123I-16-iodo-9- Hexadecenoic Acid and Derivatives for Use as Myocardial Perfusion Imaging Agents. (
  • The prevalence of ischemia in 522 patients randomized to stress testing was assessed by adenosine technetium-99m sestamibi single-photon emission-computed tomography myocardial perfusion imaging. (
  • The Detection of Ischemia in Asymptomatic Diabetics (DIAD) study was designed to determine the prevalence and severity of inducible myocardial ischemia in asymptomatic patients with type 2 diabetes, using adenosine-stress single-photon emission-computed tomography (SPECT) myocardial perfusion imaging as well as clinical and laboratory predictors of abnormal test results. (
  • LVEF ≥ 70%) on stress radionuclide myocardial perfusion imaging (RNMPI), are more likely to have features of diastolic dysfunction on transthoracic echocardiography. (
  • Among these, patients who had no evidence of reversible ischemia and had hyperdynamic left ventricle on perfusion imaging, were selected and their recent echocardiograms were reviewed for evidence of diastolic dysfunction. (
  • Hamad, EA & Travin, MI 2012, ' The Complementary Roles of Radionuclide Myocardial Perfusion Imaging and Cardiac Computed Tomography ', Seminars in Roentgenology , vol. 47, no. 3, pp. 228-239. (
  • CT myocardial perfusion imaging is an emerging diagnostic modality that is under intensive study but not yet widely used in clinical practice. (
  • The purpose of this study is to evaluate the performance of resting 64-MDCT in revealing ischemia identified on radionuclide myocardial perfusion imaging (MPI). (
  • The purpose of this study was to determine the long-term risk of subsequent cardiovascular events in patients with an intermediate-risk treadmill score who do not have myocardial perfusion defects on radionuclide imaging. (
  • A total of 4649 patients were identified who had intermediate-risk Duke treadmill scores (- 10 to 4), normal or near- normal exercise single photon-emission computed tomographic myocardial perfusion images using either thallium-201 or technetium-99m sestamibi, and no previous coronary revascularization. (
  • Conclusions - Patients with an intermediate-risk treadmill score but with normal or near-normal exercise myocardial perfusion images and normal cardiac sizes are at low risk for subsequent cardiac death and can be safely managed medically until their symptoms warrant revascularization. (
  • Due to a tremendous increase in imaging usage in the last decades, in particular of myocardial perfusion imaging with radionuclide tracers, significant concerns have been recently raised on the possible harmful effect of the exposure of patients and health care operators to ionizing radiation. (
  • Marcassa, C & Zoccarato, O 2016, ' Radiation Dose Reduction from Radionuclide Myocardial Perfusion Imaging ', Current Cardiovascular Imaging Reports , vol. 9, no. 1, 4, pp. 1-8. (
  • A second phase "blood pool" image following the perfusion (if carried out in a three phase technique)can help to diagnose inflammatory conditions or problems of blood supply. (
  • It is recognized by many in the field of nuclear cardiology that in order to thrive and advance, the discipline needs to go beyond myocardial perfusion imaging (MPI). (
  • To compare the diagnostic sensitivity and specificity of exercise ECG versus exercise ECG-gated Tc-99m tetrofosmin SPECT myocardial perfusion imaging in women who undergo an elective cardiac catheterization. (
  • Multiple (two to three) views of each pacing site were obtained by radionuclide angiography and the ventricular site was determined by subsequent phase imaging. (
  • The effectiveness of sequential imaging of early regional left ventricular contraction in the detection of ischémie abnormalities was assessed in 47 patients (15 with previous infarction) with angiographically proven coronary artery disease, and 11 normal volunteers, undergoing first pass radionuclide angiography with a multielement gamma camera at rest and at peak exercise. (
  • Functional cardiac imaging in coronary disease: Increased sensitivity of first-pass radionuclide angiography utilizing sequential regional left ventricular early diastolic filling rate images. (
  • Breitenbuecher A, Pfisterer M, Hoffmann A, Burckhardt D. Long-term follow-up of patients with silent ischemia during exercise radionuclide angiography. (
  • We evaluated the role of equilibrium radionuclide angiography (ERNA) as a diagnostic tool for ARVC. (
  • First-pass radionuclide angiography of the terminal aorta was performed in 3 normal horses and a 6-year-old Standardbred intact male with aortoiliac thromboembolism. (
  • Using 99mTc-HDP, first-pass radionuclide angiography was combined with hind limb and pelvis bone (delayed) scintigraphy and revealed marked reduction in blood flow through both external iliac arteries and absence of blood flow in the internal iliac arteries. (
  • First-pass radionuclide angiography provided a method to obtain diagnostic images of the terminal aorta and branches and a method to diagnose aortoiliac thromboembolism in the horse. (
  • Diagnostic imaging procedures for adults with suspected CHD include chest radiography, echocardiography (transthoracic and transesophageal), nuclear scintigraphy, cardiac-gated computed tomography (CT), magnetic resonance imaging (MRI), and cardiac catheterization and angiography. (
  • Radionuclide Angiography" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (
  • This graph shows the total number of publications written about "Radionuclide Angiography" by people in Harvard Catalyst Profiles by year, and whether "Radionuclide Angiography" was a major or minor topic of these publication. (
  • Below are the most recent publications written about "Radionuclide Angiography" by people in Profiles. (
  • Left ventricular function and visual phase analysis with equilibrium radionuclide angiography in patients with biventricular device. (
  • To evaluate left ventricular ejection fraction (LVEF) and synchronisation changes after CRT with a biventricular pacing implant, we used an equilibrium radionuclide angiography (ERNA). (
  • The radiologic diagnostic tests commonly used in the evaluation of patients with suspected PE include chest radiography, radionuclide V/Q scan, CT pulmonary arteriography, and pulmonary angiography. (
  • 2014. "U-SPECT-BioFluo: an integrated radionuclide, bioluminescence, and fluorescence imaging platform. (
  • Background: In vivo bioluminescence, fluorescence, and single-photon emission computed tomography (SPECT) imaging provide complementary information about biological processes. (
  • A combination of a fluorescent dye and radioactive moiety was used to directly relate the optical images of the module to the SPECT findings. (
  • The SPECT and bioluminescence images could be used to place the fluorescence findings in perspective, e.g. by showing tracer accumulation in non-target organs such as the liver and kidneys (SPECT) and giving a semi-quantitative read-out for tumor spread (bioluminescence). (
  • Conclusions: We developed a fully integrated multimodal platform that provides complementary registered imaging of bioluminescent, fluorescent, and SPECT signatures in a single scanning session with a single dose of anesthesia. (
  • The biodistribution data were confirmed by SPECT/CT imaging. (
  • Molecular phenotypes of neoplasms can be determined by molecular imaging with specific probes using positron emission tomography (PET), single photon emission computed tomography (SPECT), magnetic resonance imaging (MRI), or optical methods, so that the treatment is specifically targeted against the tumor and its environment. (
  • for a quantitative approach, Ga-68 and PET/CT is clearly superior to gamma-emitting radionuclides and single photon emission computed tomography (SPECT). (
  • In a typical bone scan technique, the patient is injected (usually into a vein in the arm or hand, occasionally the foot) with up to 740 MBq of technetium-99m-MDP and then scanned with a gamma camera, which captures planar anterior and posterior or single photon emission computed tomography (SPECT) images. (
  • In order to view small lesions SPECT imaging technique may be preferred over planar scintigraphy. (
  • The high diagnostic and risk stratification utilities of radionuclide single-photon emission computed tomography (SPECT) and positron emission tomography (PET) MPI are well established, 1-4 with observational studies 5-7 strongly suggesting that performing and properly acting upon the results of MPI can lead to improved patient outcome, with a study in progress designed to firmly establish this. (
  • The emission of gamma photons by 177 Lu allows for imaging with SPECT (single photon emission computed tomography). (
  • One important step for dosimetry using this imaging technique is the SPECT image segmentation, which needs to be robust and accurate for the estimated quantities to be reliable. (
  • This work investigates different methods for automatic tumour delineation in 177 Lu-DOTATATE SPECT images. (
  • Effects of including resolution compensation in the iterative SPECT image reconstruction are also studied. (
  • Evaluation is performed based on Monte Carlo-simulated SPECT images from 24 h and 336 h post injection (p.i.), for determination of the volume, activity concentration and dice similarity coefficient. (
  • In addition, patient data are used to investigate the correspondence of tumour volumes when delineated in SPECT or morphological CT or MR images. (
  • The differences between the tumour volumes estimated from the SPECT images and the volumes estimated from morphological images are generally larger than the discrepancies seen for the simulated data sets. (
  • Such modalities include positron emission tomography (PET), single photon emission computed tomography (SPECT), optical imaging (OI, bioluminescence and fluorescence), magnetic resonance imaging (MRI), ultrasound (US), and computed tomography (CT) [1] , [2] . (
  • While OI generally detects low energy light (visible or near-infrared light) emitted from bioluminescence or fluorescence probes, radioactive molecular probes are traditionally imaged with PET, SPECT or gamma (γ) cameras that detect high energy γ rays [1] . (
  • Milabs B.V., manufacturer of the world's only fully integrated SPECT/PET/Optical/CT-scanner, today announces that the core molecular imaging facility at Queen Mary University of London's Barts Cancer Institute has boosted its radionuclide imaging capabilities with a MILabs VECTor PET/SPECT/CT omni-tomography system. (
  • With exceptional breadth and depth, the book includes chapters dedicated to isotopes, isotope uptake and scanning procedures such as SPECT/CT, radioiodine ablation (with or without recombinant human TSH), stunning, dosimetry (with or without recombinant human TSH), Octreotide and FDG-PET scanning and other alternative imaging modalities. (
  • Bahl M. Preoperative Parathyroid Imaging: Trends in Utilization and Comparative Accuracy of Sonography, Scintigraphy, and 4-Dimensional Computed Tomography. (
  • According to the most recent appropriate use criteria for cardiac radionuclide imaging (described in indications 6 to 9 of Table 1 of Hendel and colleagues' guideline [1]) and cardiac computed tomography (described in indications 6 to 8. (
  • Among them, molecular imaging using radionuclide techniques focuses on small scale molecular events rather than anatomical alterations (such as in computed tomography (CT), ultrasound, radiography). (
  • THERANOSTICS of neuroendocrine tumors (NETs) using Ga-68 labeled tracers for diagnostics with positron emission tomography/ computed tomography (PET/CT), and using Lu-177 or other metallic radionuclides for radionuclide therapy by applying the same peptide proves that personalized radionuclide therapy today is already a fact and not a fiction. (
  • Addition of two important facets namely individualized patient dosimetry by pre- or post therapeutic imaging, and assessment of therapy response using quantitative imaging by Ga-68 positron emission tomography/ computed tomography (PET/CT) fulfills the potential of personalized medicine. (
  • Computed tomography and gadolinium-enhanced magnetic resonance imaging are better for early diagnosis (5,6). (
  • However, magnetic resonance imaging and computed tomography are often necessary, particularly for assessment of extracardiac anatomy or specific vascular connections or relationships, which may be complex in postoperative patients. (
  • Although magnetic resonance imaging and computed tomography can provide volumetric data for more comprehensive evaluation of cardiac anatomy and function, magnetic resonance imaging does not require patient exposure to ionizing radiation or nephrotoxic iodinated contrast media. (
  • Until recently, choline-based positron emission tomography/computed tomography (PET/CT) represented the state-of-the-art radionuclide imaging technique for these purposes. (
  • Nuclear medicine provides functional imaging and allows visualisation of bone metabolism or bone remodeling, which most other imaging techniques (such as X-ray computed tomography, CT) cannot. (
  • Case studies from the first total-body positron emission tomography/computed tomography (PET/CT) scanner reveal multiple benefits of the novel imaging technology, providing a solid groundwork upon which to build its clinical utility. (
  • This traditional form of imaging, often termed anatomic imaging, has made an important contribution to cancer care, and is widely used in the detection and staging of breast cancer patients using methods such as X-ray mammography and computed tomography (CT). (
  • To receive news and publication updates for Contrast Media & Molecular Imaging, enter your email address in the box below. (
  • 68Ga-DOTAVAP-P1 PET imaging capable of demonstrating the phase of inflammation in healing bones and the progress of infection in osteomyelitic bones," European Journal of Nuclear Medicine and Molecular Imaging , vol. 35, no. 2, pp. 352-364, 2008. (
  • Preclinical evaluation of two 68Ga-siderophores as potential radiopharmaceuticals for Aspergillus fumigatus infection imaging," European Journal of Nuclear Medicine and Molecular Imaging , vol. 39, no. 7, pp. 1175-1183, 2012. (
  • Irina Velikyan, "Prospective of 68 Ga Radionuclide Contribution to the Development of Imaging Agents for Infection and Inflammation," Contrast Media & Molecular Imaging , vol. 2018, Article ID 9713691, 24 pages, 2018. (
  • The field of radionuclide imaging is broadening, and in addition to anatomical imaging, radionuclide imaging also has the unique ability to image the myocardium at a molecular level. (
  • This molecular imaging is designed to image the spectrum of cardiovascular disease including inflammation, thrombosis, apoptosis, necrosis, and fibrosis. (
  • The Technische Universität München (TUM) is seeking applications from highly motivated candidates for a Postdoc position in molecular imaging and therapy using novel probes. (
  • The TUM provides access to excellent infrastructure for conducting cutting-edge research in the field of molecular imaging (e.g. (
  • Radionuclide molecular imaging of HER2 expression might permit stratification of patients for HER2-targeting therapies. (
  • The molecular imaging provides non-invasive method for the monitoring of functional changes in individual organs, with higher sensitivity, specificity and the possibility of quantification of these alterations. (
  • For the last few decades, several molecular imaging applications targeting neurohormonal system have been developed and utilized clinically. (
  • THERANOSTICS, molecular imaging, personalized radionuclide therapy. (
  • In the context of nuclear medicine, it refers to the use of molecular targeting vectors (e.g. peptides) labeled either with diagnostic radionuclides (e.g. positron or gamma emitters), or with therapeutic radionuclides for diagnosis and therapy respectively of a particular disease, targeted specifically by the vector at its molecular level. (
  • Therefore molecular imaging and diagnosis of the disease can be effectively followed by personalized treatment utilizing the same molecular imaging vectors. (
  • Such system will be used for functional imaging of biological processes at molecular level in small animal. (
  • Further, functional and molecular imaging promised to streamline the clinical drug development process by providing evident of biological activity of investigational drugs during the initial stages of clinical testing and to inform decision making prior to embarking upon pivotal trials. (
  • 8 Nevertheless, there is an increased focus on developing radionuclide techniques that rely on a unique strength of the modality, that is, the ability to image the underlying molecular processes of cardiac disease. (
  • Advances in molecular biology and imaging have allowed the successful non-invasive monitoring of transplanted stem cells in the living subject. (
  • Recent developments in molecular imaging modalities may likely permit investigators to answer some of these questions. (
  • It provides a new molecular imaging strategy and will likely have significant impact on both small animal and clinical imaging. (
  • This work was supported, in part, by the Department of Radiology, Stanford University (to Z.C.), a China Scholarship Council fellowship (to H.L.), the National Cancer Institute (NCI) In Vivo Cellular Molecular Imaging Center (ICMIC) grant P50 CA114747 (to S.S.G.), and R01 CA119053 (to Z.C.). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. (
  • Molecular imaging is a relatively new yet fast growing research discipline. (
  • Numerous studies have demonstrated that molecular imaging techniques play a central role in the era of personalized medicine. (
  • OI has rapidly gained popularity in molecular imaging. (
  • We hypothesized that radionuclide radiation in the low energy window of light (1.2-3.1 eV, 400-1000 nm) could be imaged using OI techniques and be especially valuable for molecular OI. (
  • Our study demonstrates the feasibility of molecular imaging of living subjects using OI modalities in conjunction with a wide diversity of radioactive probes. (
  • MR Solutions' high field simultaneous PET-MR systems and large bore, 7T cryogen free MRI technology were seen to be game-changers by leading molecular imaging researchers at the 27th Annual Meeting of the International Society for Magnetic Resonance in Medicine, in Montreal last week. (
  • The MILabs VECTor (OI/CT) system has been acquired by the Department of Radiology at Columbia University Irving Medical Center to upgrade its molecular imaging capabilities. (
  • Biomedical imaging has revolutionized medicine, granting doctors a window into miniscule molecular and cellular processes inside the body. (
  • More recently, functional and molecular imaging has allowed the in vivo assay of biochemistry and molecular biology, which is highly complementary to tissue-based assays. (
  • This review briefly describes different imaging modalities used in molecular imaging and then reviews applications of molecular imaging to breast cancer, with a focus on translational work. (
  • Another advance, applicable to the entire range of biological systems from cell culture to human, is molecular imaging [ 2 , 3 ], which is the focus of this review. (
  • The focus for molecular imaging is not structure, but rather regional biology. (
  • As such, molecular imaging can be considered an in vivo assay technique, capable of measuring regional tumor biology without perturbing it. (
  • This makes molecular imaging a unique tool for probing breast cancer biology, complementary to traditional assay methods, and a potentially very powerful tool for translational science. (
  • In the sections that follow, imaging methods used in molecular imaging are reviewed, the biological processes that can be assayed are discussed, and selected examples of translational science using molecular imaging are reviewed. (
  • It is important to keep in perspective inherent differences in capabilities between tissue-based assays and in vivo assays using molecular imaging. (
  • Thyroid Ultrasound Reporting Lexicon: White Paper of the ACR Thyroid Imaging, Reporting and Data System (TIRADS) Committee. (
  • Ultrasound is the most commonly used imaging technique for the evaluation of thyroid nodules. (
  • Ultrasound imaging demonstrated bilateral cervical lymphadenopathy with enhanced tracer uptake in the left lateral neck on a Technetium-99m uptake scan. (
  • High resolution MRI, CT, and ultrasound as well as optically based imaging are established technologies within the pharmaceutical industries' armamentarium and a core facility for the experimental researcher. (
  • Ultrasound imaging is a widely available, relatively inexpensive, and real-time imaging modality that does not expose patients to radiation and which is the first-line imaging modality for assessment of many organs. (
  • Image characteristics as determined by the Principles and Design of the specific imaging modalities and methods (Radiography, Fluoroscopy, CT, MRI, Ultrasound, and Radionuclide Imaging). (
  • The book is published within the Springer series Clinicians' Guides to Radionuclide Hybrid Imaging (compiled under the auspices of the British Nuclear Medicine Society) and will be an excellent asset for referring clinicians, nuclear medicine/radiology physicians, radiographers/technologists, and nurses who routinely work in nuclear medicine and participate in multidisciplinary meetings. (
  • Diagnostic radiology : an Anglo-American textbook of imaging / edited by Ronald G. Grainger, David J. Allison. (
  • These apply beyond CT to much of imaging care and material and discussion of the above will emphasize the responsibility of the radiology community in consensus strategies for imaging accountability. (
  • horizontal beam imaging a grid positioning technique in radiology in which the grid cassette is positioned with its lead lines perpendicular to the floor. (
  • This category is for images related to radiology , including medical imaging . (
  • Medical imaging and the practice of radiology is a major source of diagnostic information and is required for guiding and monitoring many therapeutic procedures. (
  • The American College of Radiology has published standards for skeletal survey imaging in cases of suspected abuse. (
  • According to the American College of Radiology, high-detail imaging systems should be used for suspected abuse in infancy. (
  • Peptide receptor radionuclide therapy (PRRNT) is valuable for the management of metastasized and/or inoperable neuroendocrine neoplasms (NENs). (
  • Peptide Receptor Radionuclide Therapy (PRRT) is an emerging therapeutic modality that involves the targeted delivery of an ablative dose of radiolabelled somatostatin analog. (
  • In the last decade, a new treatment modality, peptide receptor radionuclide therapy (PPRT), has been introduced for gastroenteropancreatic neuroendocrine tumor (GEPNET) patients with non-resectable or progressive disease. (
  • Peptide receptor radionuclide therapy (PRRT) of neuroendocrine tumors (NETs) has emerged as a powerful palliative therapy. (
  • Peptide receptor radionuclide therapy for the internal radiation of neuroendocrine tumours expressing somatostatin receptors has made great advances and offers promising results. (
  • In the evaluation of patients with chest pain, whether any imaging is warranted rather than exercise stress testing alone remains a pertinent question given the radiation exposure and costs associated with both CCTA and MPI. (
  • The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. (
  • Cumulative exposure to ionizing radiation from diagnostic and therapeutic cardiac imaging procedures: a population-based analysis. (
  • The traditional issue with pediatric CT and radiation is "the balance" between image quality and radiation dose (and risk). (
  • The production of non-invasive images of body regions using ionising radiation (e.g. (
  • 68 Ga-PSMA-PET/CT imaging of localized primary prostate cancer patients for intensity modulated radiation therapy treatment planning with integrated boost. (
  • The purpose of our study was to show the feasibility and potential benefits of using68Ga-PSMA-PET/CT imaging for radiation therapy treatment planning of patients with primary prostate cancer using either integrated boost on the PET-positive volume or localized treatment of the PET-positive volume. (
  • At least another 60 radionuclides are detectable in nature, either as daughters of primordial radionuclides or as radionuclides produced through natural production on Earth by cosmic radiation. (
  • By taking the advantages of low energy window of light (1.2-3.1 eV, 400-1000 nm) resulting from radiation, radionuclides that emit charged particles such as β + and β − can be successfully imaged with an OI instrument. (
  • 8 , 9 All imaging studies involving use of ionizing radiation should be performed in accordance with the ALARA ([using an exposure] as low as reasonably achievable) principle. (
  • Zhuang H, Duarte PS, Pourdehand M et al (2000) Exclusion of chronic osteomyelitis with F-18 fluorodeoxyglucose positron emission tomographic imaging. (
  • The focus has been to measure thick target yields at 11 MeV, in an effort to concentrate on the practical production of positron emitting radionuclides that have favorable decay characteristics, high yields and the potential for labeling pivotal biological tracers. (
  • Bone scintigraphy competes with positron emission tomography (PET) for imaging of abnormal metabolism in bones, but is considerably less expensive. (
  • Imaging of positron and gamma emitters such as Fluorine-18 and isotopes of strontium with rectilinear scanners was more useful. (
  • This is also true for small animal imaging research using positron emission tomography. (
  • By imaging microglial activation levels with positron emission tomography, researchers were able to better predict progression of the disease than with beta-amyloid PET imaging, according to a study published in the April issue of the Journal of Nuclear Medicine. (
  • In addition to an updated section on ultrasonography of the thyroid gland, new sections have been added, including ones on ultrasonography of cervical lymph nodes and imaging for thyroid cancer employing computerized tomography (CT), positron emission tomography (PET) and magnetic resonance imaging (MRI). (
  • A positron emission tomography scan is a type of imaging test. (
  • One of the classic examples of theranostics is the use of Ga-68 labeled tracers, wherein the diagnosis using this generator-derived radionuclide can be effectively followed by the therapy using therapeutic radionuclides like Lu-177 and Y-90 labeled with the same tracer for personalized radionuclide therapy. (
  • Radionuclide imaging has traditionally been used to evaluate the etiology of HF, whether ischemic or non-ischemic and to determine the extent and severity of ischemia. (
  • In patients presenting with DOE who have no evidence of reversible ischemia on radionuclide stress testing but have hyperdynamic left ventricle, a search should be made for alternate cardiac etiology for this complaint such as diastolic dysfunction and heart failure with preserved ejection fraction. (
  • Noninvasive imaging of angiogenesis with a 99mTc-labeled peptide targeted at alphavbeta3 integrin after murine hindlimb ischemia. (
  • Conventional nuclear medicine offers a variety of different methods for the diagnosis of musculoskeletal infections, including three-phase bone scintigraphy, gallium imaging, and labeled leukocyte imaging with indium-111 ( 111 In)-oxine or Tc-99-hexamethyl-propyleneamine oxime (HMPAO) and labeled antibodies against leukocyte surface antigens (antigranulocyte antibodies). (
  • The results suggest that non-invasive imaging techniques including conventional plain radiographs, 99m-technetium bone scintigraphy and ultrasonography are complementary in the evaluation and monitoring of patients with painful hip arthroplasties. (
  • A bone scan or bone scintigraphy /sɪnˈtɪɡrəfi/ is a nuclear medicine imaging technique of the bone. (
  • hot spot imaging ( infarct avid imaging ) infarct avid scintigraphy . (
  • pyrophosphate imaging infarct avid scintigraphy . (
  • Cardiac neuronal imaging at the edge of clinical application. (
  • Guidelines for the Clinical Use of Cardiac Radionuclide Imaging were originally published in 1986 and updated in 1995. (
  • The first clinical validation of this new F-18 labeling kit was just published in The Journal of Nuclear Medicine ( ), where National Institute of Health scientists, collaborating with Chinese physicians, successfully imaged all sites of lung cancer in 9 patients, using a peptide labeled by the method patented by Immunomedics. (
  • In selected clinical conditions, radionuclide therapy can also constitute an effective systemic treatment beyond bone pain palliation, and a synergistic anti-tumour effect can be expected by the combination with other agents, such as chemotherapy or bisphosphonates. (
  • Readers will also find explanation of the relation of the clinical and pathological background to imaging and the value of PET/CT compared with conventional radiological imaging. (
  • Such in vivo imaging may prove useful in the clinical setting for noninvasive diagnosis, monitoring of disease progression or regression, and determining efficacy of treatment. (
  • The aim of our 1 year prospective study was to determine whether variation in clinical improvement in pain correlated with non-invasive imaging and whether such correlation changed after conservative therapy. (
  • Elements of these other balances include available resources (imaging technology and expertise), varying clinical landscapes, parental expectations, comprehensive and comprehensible information, evidential vs anecdotal decision making, rewards (e.g. performance metrics), and self-referral (including our reports). (
  • Techniques of biomedical imaging are an integral part of both drug discovery and clinical drug development. (
  • But, for this approach to be valid, it must hold that the imaging biomarker can assess some aspects of the biological activity of the investigational agent that is likely to confer clinical benefit. (
  • As yet, few imaging endpoints have been truly establish as surrogates for clinical endpoints, thus the full impact of radiological imaging for the drug developer remains to be realize. (
  • Most clinical facilities now have a complementary selection of imaging modalities and methods with each contributing specific capabilities and values to the diagnostic process. (
  • With the advances in medical imaging technology and methods the procedures have become more complex and their maximum value requires a clinical team (radiologists, technologists/radiographers, and medical physicists) with the knowledge and experience to conduct the imaging procedures. (
  • The ability to Evaluate Clinical Images with respect to their image quality characteristics. (
  • Effective diagnostic imaging of child abuse rests on high-quality technology as well as a full appreciation of the clinical and pathologic alterations occurring in abused children. (
  • When viewed in conjunction with clinical and laboratory studies, imaging findings commonly provide additional objective evidence in the evaluation of possible inflicted injury or abuse. (
  • The gallbladder radionuclide scan is performed by injecting a tracer (radioactive chemical) into the bloodstream. (
  • The camera will detect the gamma rays being emitted from the tracer, and the image of where the tracer is found in the organs is transmitted to a computer. (
  • Cynthia L. Sullivan, President and CEO, explained: "PET with F-18 is already one of the most prevalent nuclear tracer methods used in oncology and neurology, so our scientists, as part of developing companion imaging agents for our therapeutics, strived to invent rapid and simple methods to label peptides and other proteins, including antibodies, for convenient and accurate imaging. (
  • Radionuclide tracer techniques in haematology / C. S. Bowring. (
  • An imaging tracer made with radionuclides is called a radioactive tracer . (
  • However, most of the conventional radionuclide imaging techniques are of low specificity in the detection of low-grade and chronic infections, especially in the axial skeleton due to high physiological uptake in normal bone marrow of the spine. (
  • External radionuclide imaging showed a two- to sixfold increase in the uptake of radiolabeled annexin V at sites of apoptosis in all three models. (
  • Noninvasive cardiovascular imaging. (
  • Current Cardiovascular Imaging Reports , 9 (1), 1-8. (
  • In addition, the patent now covers the same labeling with F-19, which can be used for MRI, another major imaging modality for depicting, in particular, musculoskeletal and neurological structures. (
  • The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph. (
  • A radionuclide cystogram is a special imaging nuclear scan test. (
  • A total of 34 replacement hip arthroplasties in 31 patients with pain following surgery were studied by plain film, radionuclide bone scan and ultrasonography. (
  • These images are a random sampling from a Bing search on the term "Lumbar Spine Bone Scan. (
  • There is a valuable reference atlas of scan images and illustrations, and a scholarly summary of the side effects of radioiodine and how to avoid or minimize adverse effects of treatment. (
  • FDG-PET likely will play an important role in the evaluation of musculoskeletal infection, especially spinal osteomyelitis, and may replace gallium imaging for this purpose. (
  • These findings provide a basis for further assessment of the role of phase imaging in the evaluation of patients with spontaneous ventricular ectopy. (
  • Synthesis, 68Ga labeling and preliminary evaluation of DOTA peptide binding vascular adhesion protein-1: a potential PET imaging agent for diagnosing osteomyelitis," Nuclear Medicine and Biology , vol. 36, no. 6, pp. 631-641, 2009. (
  • Schad N, Bruzzone F, Romeo F. Systolic and diastolic functional imaging in evaluation of ischaemic heart disease. (
  • These findings suggest that ERNA may serve as a valuable imaging tool in the diagnostic evaluation of patients with suspected ARVC. (
  • Currently, a variety of serologic and cytogenetic tests, diagnostic imaging studies, and histopathologic techniques exist for the evaluation of a thyroid nodule. (
  • Noninvasive imaging is particularly useful for serial evaluation of patients with surgically corrected congenital heart disease, because nearly one half of these patients will require two or more surgeries. (
  • 68)Ga-PSMA I&T PET/CT for assessment of prostate cancer: evaluation of image quality after forced diuresis and delayed imaging. (
  • At the moment, gallium is the preferred radionuclide procedure for this condition and is a useful adjunct to magnetic resonance imaging. (
  • Meyers SP, Wiener SN (1991) Diagnosis of hematogenous pyogenic vertebral osteomyelitis by magnetic resonance imaging. (
  • Magnetic resonance imaging (MRI) is most useful in assessing the presence of periarticular osteomyelitis as a causative mechanism. (
  • Comparison of radionuclide angiographic synchrony analysis to echocardiography and magnetic resonance imaging for the diagnosis of arrhythmogenic r. (
  • Comparison of radionuclide angiographic synchrony analysis to echocardiography and magnetic resonance imaging for the diagnosis of arrhythmogenic right ventricular cardiomyopathy. (
  • Magnetic resonance imaging also can measure blood flow for quantification of left-to-right shunts, regurgitant fractions, and pressure gradients. (
  • Early Legg-Perthes disease (ischemic necrosis of the femoral head) demonstrated by magnetic resonance imaging. (
  • echo planar imaging a technique for obtaining a magnetic resonance image in less than 50 msec. (
  • gated magnetic resonance imaging a method for magnetic resonance imaging in which signal acquisition is gated to minimize motion or other artifacts. (
  • magnetic resonance imaging (MRI) a method of visualizing soft tissues of the body by applying an external magnetic field that makes it possible to distinguish between hydrogen atoms in different environments. (
  • The noninvasive localization of ventricular pacing sites by radionuclide phase imaging. (
  • Schad N, Romeo F, Fesl H, Nickel O. Noninvasive assessment of regional diastolic left ventricular function with first pass radionuclide functional imaging. (
  • These results suggest that radiolabeled annexin V can be used in vivo as a noninvasive means to detect and serially image tissues and organs undergoing programmed cell death. (
  • Although noninvasive imaging techniques have limitations, they can evaluate most lesions and preclude the need for cardiac catheterization. (
  • Diagnostic imaging modalities may be helpful but are often nonspecific. (
  • In our view, integration of these modalities helps to improve data interpretation of optical findings in relation to radionuclide images. (
  • A variety of imaging modalities have been developed that provide functional and anatomical information of diseases in living small animals and patients. (
  • A comprehensive textbook covering the physics and physical principles of all imaging modalities. (
  • imag·ing/ ( im´ah-jing ) the production of diagnostic images, e.g., radiography, ultrasonography, or scintillation photography. (
  • Radiopharmaceuticals and Other Compounds Labelled with Short-Lived Radionuclides. (
  • I thought you might be interested in this item at Title: Radiopharmaceuticals and Other Compounds Labelled with Short-Lived Radionuclides. (
  • Radiopharmaceuticals and Other Compounds Labelled with Short-Lived Radionuclides covers through both review and contributed articles the potential applications and developments in labeling with short-lived radionuclides whose use is restricted to institutions with accelerators. (
  • Quantitative imaging of 223Ra-chloride (Alpharadin) for targeted alpha-emitting radionuclide therapy of bone metastases. (
  • Echocardiography and radionuclide imaging were performed within 2 hours of each another, 5 to 8 days after hospital admission. (
  • Many diagnostic methods, such as ECG, biochemical cardiac markers, transthoracic and transoesophageal echocardiography, and radionuclide imaging studies, have been investigated to determine their use in predicting such complications. (
  • 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. (
  • Experience in application of radioactive probes and analysing image data is important. (
  • A radionuclide ( radioactive nuclide , radioisotope or radioactive isotope ) is an atom that has excess nuclear energy, making it unstable. (
  • During those processes, the radionuclide is said to undergo radioactive decay . (
  • The radioactive decay can produce a stable nuclide or will sometimes produce a new unstable radionuclide which may undergo further decay. (
  • In vivo optical images can be obtained for several radioactive probes including 2-deoxy-2-[ 18 F]fluoro-D-glucose ([ 18 F]FDG), Na 18 F, Na 131 I, 90 YCl 3 and a 90 Y labeled peptide that specifically target tumors. (
  • The results presented here bridge the subfields of imaging by visualizing radioactive probes with OI. (
  • Images of these were later merged by means of image processing techniques. (
  • Nuclear medicine and related radionuclide applications in developing countries : proceedings of an International Symposium on Nuclear Medicine and Related Medical Applications of Nuclear Techniques in Developing Countries, held in Vienna, 26-30 August 1985 / organized by the International Atomic Energy Agency, in co-operation with the World Health Organization. (
  • Accelerated cine imaging techniques will be discussed including compressed sensing and increased acceleration parallel imaging. (
  • Optical imaging (OI) techniques such as bioluminescence and fluorescence imaging have been widely used to track diseases in a non-invasive manner within living subjects. (
  • This study was designed to investigate the potential role of radionuclide angiographic phase imaging in defining ventricular pacing sites. (
  • Thus, radionuclide angiographic phase imaging provides excellent descriptive information regarding the focus of ventricular pacing ectopy and can define both sites of continuous pacing and intermittent premature ventricular stimulation. (
  • 68)Ga-PSMA 11 ligand PET imaging in patients with biochemical recurrence after radical prostatectomy - diagnostic performance and impact on therapeutic decision-making. (
  • 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. (
  • Schad N, Nickel O. Assessment of left ventricularperformance by functional images. (
  • 4 Iodine-123- meta -iodobenzylguanidine ( 123 I- m IBG) is a radiolabeled analogue of the false NE transmitter guanethidine that, when injected intravenously, diffuses into synaptic spaces and is taken up into presynaptic terminals by the NET1 transporter but not metabolized, thereby accumulating and allowing imaging for assessment of the functional state of adrenergic innervation. (
  • We believe this PET/MRI imaging technology can be of value in the assessment and development of targeted therapeutics," Ms. Sullivan said, "and we are collaborating in this area of research with two major pharmaceutical companies, in addition to evaluating this with our own antibody-based therapeutics. (
  • The specific subproject in the SFB 824 is focussed on therapy assessment in prostate cancer using novel probes for PET-imaging and radionuclide therapy. (
  • An imaging technique capable of localizing and quantifying apoptosis in vivo would permit assessment of disease progression or regression and similarly define the efficacy of therapy designed to inhibit or induce cell death ( 5 - 6 ). (
  • Radiologic imaging is critical for the initial assessment and for surveillance in this population. (
  • 9 Among such nonperfusion radionuclide imaging methods of current interest is assessment of cardiac autonomic innervation. (
  • However, imaging studies are often critical, particularly in the assessment of the infant and young child with evidence of physical injury. (
  • It is now possible to image sympathetic cardiac innervation with a radiolabeled NE analogue. (
  • Travin M.I. Travin, Mark I. Radionuclide Imaging of Cardiac Innervation. (
  • The project is embedded in current advances in imaging and therapy of prostate cancer conducted at TUM. (
  • Palestro CJ, Kim CK, Swyer AJ et al (1990) Total-hip arthroplasty: periprosthetic indium-111-labeled leukocyte activity and complementary technetium-99m-sulfur colloid imaging in suspected infection. (
  • phases of radionuclide imaging is technetium-99. (
  • used for imaging purposes is technetium-99 m , a gamma-ray emitter with a six-hour half-life, which diffuses throughout the tissues of the body after its administration. (
  • Elements heavier than lead , and the elements technetium and promethium , exist only as radionuclides. (
  • successfully demonstrated that high-energy β + emitters, 18 F and 13 N, could be used for optical imaging [6] . (
  • Our study further evaluated a variety of radionuclides (β + , β − and γ emitters) for optical imaging. (
  • Trends in Use of Medical Imaging in US Health Care Systems and in Ontario, Canada, 2000-2016. (
  • Learning the physics of medical imaging is a continuing and progressive process that uses a series of learning activities as illustrated here. (
  • The Sprawls Resources is a collection of educational materials developed to connect the learner to the physical universe associated with the various medical imaging methods in class and conference sessions, collaborative group activities, and for individual study. (
  • To meet these demands, we need to define the targets, ligands, coupling and labeling chemistry, the most appropriate radionuclides, biodistribution modifiers, and finally select the right patients for the personalized treatment. (
  • The purpose of this study was to investigate the possibility of quantitative imaging of Ra to enable biodistribution studies. (
  • Siglec-9 is a novel leukocyte ligand for vascular adhesion protein-1 and can be used in PET imaging of inflammation and cancer," Blood , vol. 118, no. 13, pp. 3725-3733, 2011. (
  • cancer of the bone or metastasis, location of bone inflammation and fractures (that may not be visible in traditional X-ray images), and bone infection. (
  • Radionuclide imaging studies are routinely used to evaluate patients suspected of having musculoskeletal infection. (
  • The diagnosis of musculoskeletal infection can be clinically challenging and imaging procedures are routinely performed as part of the diagnostic workup. (
  • This article reviews the principles, indications, and limitations of radionuclide imaging studies available for diagnosing musculoskeletal infection. (
  • 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. (
  • Diagnostic accuracy of sequential images (67-91%) was higher than that of ejection rate image (71-72%), and of global hemodynamic parameters (33-60%), in the detection of coronary patients. (
  • Sympathetic innervation imaging can provide insights into the prognosis of patients with HF and, in the future, may evolve into a prognostic tool to help risk stratify patients who will benefit from particular interventions including device therapy. (
  • Simpson's rule had low correlation to the radionuclide EF (r = 0.45 to 0.51) and could not be used in approximately half of the patients due to poor identification of endocardial borders. (
  • However, with experienced sonographers, the LV wall motion score index or visual estimation of the EF had reasonable agreement with the radionuclide EF in most of the patients. (
  • Quantification of activity in bone after administrations of 100 kBq/kg of Ra-chloride proved the feasibility of quantitative imaging of patients who have received radionuclide therapy. (
  • This observation has led to testing radiolabeled annexin V in animal models of acute thrombosis and imaging of atrial thrombi in patients with atrial fibrillation ( 14 , 15 ). (
  • Here, a review of the recent developments in PSMA-based diagnostic imaging and therapy in patients with PCa with radiolabeled PSMA ligands is provided. (
  • Furthermore, some of these imaging strategies have the potential to be translated to patients, which makes them plausible to be used in the clinics. (
  • The focus is on in vivo imaging of animal models and patients. (
  • We conclude that the EF estimated from quantitative echocardiographic volume calculations (Simpson's rule) may differ substantially from radionuclide methods of measuring the EF. (
  • Due to the incidence of CAD, there is a need for accurate, inexpensive, and non-invasive imaging methods for both diagnosis and monitoring. (
  • There are no specific laboratory tests and imaging methods to clarify the active disease. (
  • Changes in the different imaging methods and pain were compared after 1 year of conservative treatment. (
  • Much recent work shows a robust ability of cardiac autonomic innervation imaging to effectively assess a patient's condition beyond other commonly used methods. (
  • However, while sample-based methods can assay many different processes at once - for example, the expression of an array of genes [ 7 ] - imaging can typically sample at most a few processes at the same time. (
  • Recent estimates indicate that cardiac imaging procedures account for almost 40 % of the cumulative dose for imaging procedures. (
  • RATIONALE: New imaging procedures such as lymphoscintigraphy may improve the ability to detect the spread of mouth and throat cancer to lymph nodes in the neck. (
  • Optimization of Imaging Procedures with respect to visibility requirements, risk, and image acquisition time. (
  • Labeled leukocyte imaging should be used in cases of "complicating osteomyelitis" such as prosthetic joint infection. (
  • In contrast to other regions in the skeleton, labeled leukocyte imaging is not useful for diagnosing spinal osteomyelitis. (
  • Palestro CJ, Torres MA (1997) Radionuclide imaging in orthopedic infections. (
  • 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. (
  • 68Ga-siderophores for PET imaging of invasive pulmonary aspergillosis: Proof of principle," Journal of Nuclear Medicine , vol. 51, no. 4, pp. 639-645, 2010. (
  • Imaging is by a conventional gamma camera focused on the principal 159 keV 123 I-emission using a low energy collimator, although there are reports suggesting that use of a medium energy collimator to block corrupting higher energy emissions may be better. (
  • 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. (
  • especially, cross-sectional imaging, such as ultrasonography. (
  • color flow Doppler imaging a method of visualizing direction and velocity of movement using Doppler ultrasonography and coding them as colors and shades, respectively. (
  • It has the disadvantage of a long half-life (six hours), however, and other radionuclides with shorter half-lives are also used. (
  • They have shorter half-lives than primordial radionuclides. (