A heavy, bluish white metal, atomic number 81, atomic weight [204.382; 204.385], symbol Tl.
Unstable isotopes of thallium that decay or disintegrate emitting radiation. Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes.
Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Unstable isotopes of zinc that decay or disintegrate emitting radiation. Zn atoms with atomic weights 60-63, 65, 69, 71, and 72 are radioactive zinc isotopes.
Inorganic salts of the hypothetical acid ferrocyanic acid (H4Fe(CN)6).
Method for assessing flow through a system by injection of a known quantity of radionuclide into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)
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 strontium that decay or disintegrate spontaneously emitting radiation. Sr 80-83, 85, and 89-95 are radioactive strontium isotopes.
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.
Unstable isotopes of krypton that decay or disintegrate emitting radiation. Kr atoms with atomic weights 74-77, 79, 81, 85, and 87-94 are radioactive krypton isotopes.
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.
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.
A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752)
Unstable isotopes of sodium that decay or disintegrate emitting radiation. Na atoms with atomic weights 20-22 and 24-26 are radioactive sodium isotopes.
Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.
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)
Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights 126-129, 131, 133, and 139-143 are radioactive barium isotopes.
The hollow, muscular organ that maintains the circulation of the blood.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.
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 carbon that decay or disintegrate emitting radiation. C atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes.
Unstable isotopes of iron that decay or disintegrate emitting radiation. Fe atoms with atomic weights 52, 53, 55, and 59-61 are radioactive iron isotopes.
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.
Unstable isotopes of phosphorus that decay or disintegrate emitting radiation. P atoms with atomic weights 28-34 except 31 are radioactive phosphorus isotopes.
Agents counteracting or neutralizing the action of POISONS.
High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.
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)
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.
Unstable isotopes of mercury that decay or disintegrate emitting radiation. Hg atoms with atomic weights 185-195, 197, 203, 205, and 206 are radioactive mercury isotopes.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.
Stable cesium atoms that have the same atomic number as the element cesium, but differ in atomic weight. Cs-133 is a naturally occurring isotope.
Absence of hair from areas where it is normally present.
Unstable isotopes of cerium that decay or disintegrate emitting radiation. Ce atoms with atomic weights 132-135, 137, 139, and 141-148 are radioactive cerium isotopes.
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.
Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope.
Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)
Unstable isotopes of gold that decay or disintegrate emitting radiation. Au 185-196, 198-201, and 203 are radioactive gold isotopes.
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.
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.
Substances used to destroy or inhibit the action of rats, mice, or other rodents.
Any diagnostic evaluation using radioactive (unstable) isotopes. This diagnosis includes many nuclear medicine procedures as well as radioimmunoassay tests.
Stable zinc atoms that have the same atomic number as the element zinc, but differ in atomic weight. Zn-66-68, and 70 are stable zinc isotopes.
Unstable isotopes of sulfur that decay or disintegrate spontaneously emitting radiation. S 29-31, 35, 37, and 38 are radioactive sulfur isotopes.
Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image.
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.
Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.
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.
A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.
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).
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).
Lutetium. An element of the rare earth family of metals. It has the atomic symbol Lu, atomic number 71, and atomic weight 175.
Rhenium. A metal, atomic number 75, atomic weight 186.2, symbol Re. (Dorland, 28th ed)
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.
Pollutants, present in soil, which exhibit radioactivity.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Unstable isotopes of bromine that decay or disintegrate emitting radiation. Br atoms with atomic weights 74-78, 80, and 82-90 are radioactive bromine isotopes.
Detection and counting of scintillations produced in a fluorescent material by ionizing radiation.
Leakage and accumulation of CEREBROSPINAL FLUID in the subdural space which may be associated with an infectious process; CRANIOCEREBRAL TRAUMA; BRAIN NEOPLASMS; INTRACRANIAL HYPOTENSION; and other conditions.
A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY.
Organic compounds that contain technetium as an integral part of the molecule. These compounds are often used as radionuclide imaging agents.
Stable calcium atoms that have the same atomic number as the element calcium, but differ in atomic weight. Ca-42-44, 46, and 48 are stable calcium isotopes.
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)
Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.
Normal human serum albumin mildly iodinated with radioactive iodine (131-I) which has a half-life of 8 days, and emits beta and gamma rays. It is used as a diagnostic aid in blood volume determination. (from Merck Index, 11th ed)
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
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.
The circulation of blood through the CORONARY VESSELS of the HEART.
Unstable isotopes of ruthenium that decay or disintegrate emitting radiation. Ru atoms with atomic weights 93-95, 97, 103, and 105-108 are radioactive ruthenium isotopes.
Techniques used to determine the age of materials, based on the content and half-lives of the RADIOACTIVE ISOTOPES they contain.
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.
Unstable isotopes of selenium that decay or disintegrate emitting radiation. Se atoms with atomic weights 70-73, 75, 79, 81, and 83-85 are radioactive selenium isotopes.
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.
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.
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.
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
Atomic species differing in mass number but having the same atomic number. (Grant & Hackh's Chemical Dictionary, 5th ed)
A type of high-energy radiotherapy using a beam of gamma-radiation produced by a radioisotope source encapsulated within a teletherapy unit.
An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.
A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.
Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The symptom of paroxysmal pain consequent to MYOCARDIAL ISCHEMIA usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the MYOCARDIUM exceed that supplied by the CORONARY CIRCULATION.
A specialty field of radiology concerned with diagnostic, therapeutic, and investigative use of radioactive compounds in a pharmaceutical form.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.
A series of steps taken in order to conduct research.
Traumatic injuries to the OLFACTORY NERVE. It may result in various olfactory dysfunction including a complete loss of smell.
Prolonged dysfunction of the myocardium after a brief episode of severe ischemia, with gradual return of contractile activity.

Cardiac sympathetic activity estimated by 123I-MIBG myocardial imaging in patients with dilated cardiomyopathy after beta-blocker or angiotensin-converting enzyme inhibitor therapy. (1/874)

Impaired cardiac sympathetic activity can be evaluated by 123I-metaiodobenzylguanidine (MIBG) imaging. METHODS: We studied the significance of MIBG imaging for 24 patients (age 58+/-12 y) with dilated cardiomyopathy (DCM). We compared 12 patients (group A) treated with metoprolol (dose from 30-60 mg/d) with 12 patients treated with angiotensin-converting enzyme (ACE) inhibitors. Patients were studied before treatment, after 5 mo of treatment (only in group A) and after 1 y of treatment. Cardiac MIBG uptake was assessed as the heart-to-mediastinum activity ratio (H/M) and total defect score (TDS) from anterior planar and SPECT MIBG images, which were acquired in 4 h after tracer injection. New York Heart Association (NYHA) class and left ventricular ejection fraction (LVEF) calculated by echocardiography were also assessed. RESULTS: TDS decreased in both groups (in group A, from 30+/-7 through 23+/-9 to 18+/-10; P < 0.01, in group B, from 30+/-6 to 24+/-8; P < 0.01) and H/M was increased in both groups (in group A, from 1.87+/-0.31 through 2.03+/-0.28 to 2.14+/-0.29; P < 0.01, in group B, from 1.82+/-0.28 to 1.94+/-0.26; P < 0.05). But TDS and H/M were more improved in group A than in group B (P < 0.05). LVEF was significantly increased in only group A (from 38+/-6 through 43+/-8 to 49%+/-9%; P < 0.01). NYHA improved in both groups (in group A, from mean 2.5 through 2.1 to 1.8; P < 0.01, in group B, from mean 2.6 to 2.1; P < 0.05) but was more improved in group A than in group B (P < 0.05). CONCLUSION: Cardiac function, symptom and cardiac sympathetic activity evaluated by MIBG images improved after the beta-blocker therapy more than with the treatment that used ACE inhibitors.  (+info)

Randomized, controlled trial of long-term moderate exercise training in chronic heart failure: effects on functional capacity, quality of life, and clinical outcome. (2/874)

BACKGROUND: It is still a matter of debate whether exercise training (ET) is a beneficial treatment in chronic heart failure (CHF). METHODS AND RESULTS: To determine whether long-term moderate ET improves functional capacity and quality of life in patients with CHF and whether these effects translate into a favorable outcome, 110 patients with stable CHF were initially recruited, and 99 (59+/-14 years of age; 88 men and 11 women) were randomized into 2 groups. One group (group T, n=50) underwent ET at 60% of peak &f1;O2, initially 3 times a week for 8 weeks, then twice a week for 1 year. Another group (group NT, n=49) did not exercise. At baseline and at months 2 and 14, all patients underwent a cardiopulmonary exercise test, while 74 patients (37 in group T and 37 in group NT) with ischemic heart disease underwent myocardial scintigraphy. Quality of life was assessed by questionnaire. Ninety-four patients completed the protocol (48 in group T and 46 in group NT). Changes were observed only in patients in group T. Both peak &f1;O2 and thallium activity score improved at 2 months (18% and 24%, respectively; P<0. 001 for both) and did not change further after 1 year. Quality of life also improved and paralleled peak VO2. Exercise training was associated both with lower mortality (n=9 versus n=20 for those with training versus those without; relative risk (RR)=0.37; 95% CI, 0.17 to 0.84; P=0.01) and hospital readmission for heart failure (5 versus 14; RR=0.29; 95% CI, 0.11 to 0.88; P=0.02). Independent predictors of events were ventilatory threshold at baseline (beta-coefficient=0.378) and posttraining thallium activity score (beta-coefficient -0.165). CONCLUSIONS: Long-term moderate ET determines a sustained improvement in functional capacity and quality of life in patients with CHF. This benefit seems to translate into a favorable outcome.  (+info)

13N-ammonia myocardial blood flow and uptake: relation to functional outcome of asynergic regions after revascularization. (3/874)

OBJECTIVES: In this study we determined whether 13N-ammonia uptake measured late after injection provides additional insight into myocardial viability beyond its value as a myocardial blood flow tracer. BACKGROUND: Myocardial accumulation of 13N-ammonia is dependent on both regional blood flow and metabolic trapping. METHODS: Twenty-six patients with chronic coronary artery disease and left ventricular dysfunction underwent prerevascularization 13N-ammonia and 18F-deoxyglucose (FDG) positron emission tomography, and thallium single-photon emission computed tomography. Pre- and postrevascularization wall-motion abnormalities were assessed using gated cardiac magnetic resonance imaging or gated radionuclide angiography. RESULTS: Wall motion improved in 61 of 107 (57%) initially asynergic regions and remained abnormal in 46 after revascularization. Mean absolute myocardial blood flow was significantly higher in regions that improved compared to regions that did not improve after revascularization (0.63+/-0.27 vs. 0.52+/-0.25 ml/min/g, p < 0.04). Similarly, the magnitude of late 13N-ammonia uptake and FDG uptake was significantly higher in regions that improved (90+/-20% and 94+/-25%, respectively) compared to regions that did not improve after revascularization (67+/-24% and 71+/-25%, p < 0.001 for both, respectively). However, late 13N-ammonia uptake was a significantly better predictor of functional improvement after revascularization (area under the receiver operating characteristic [ROC] curve = 0.79) when compared to absolute blood flow (area under the ROC curve = 0.63, p < 0.05). In addition, there was a linear relationship between late 13N-ammonia uptake and FDG uptake (r = 0.68, p < 0.001) as well as thallium uptake (r = 0.76, p < 0.001) in all asynergic regions. CONCLUSIONS: These data suggest that beyond its value as a perfusion tracer, late 13N-ammonia uptake provides useful information regarding functional recovery after revascularization. The parallel relationship among 13N-ammonia, FDG, and thallium uptake supports the concept that uptake of 13N-ammonia as measured from the late images may provide important insight regarding cell membrane integrity and myocardial viability.  (+info)

Value of combined approach with thallium-201 single-photon emission computed tomography and Epstein-Barr virus DNA polymerase chain reaction in CSF for the diagnosis of AIDS-related primary CNS lymphoma. (4/874)

PURPOSE: To determine the diagnostic capability of thallium-201 (201Tl) single-photon emission computed tomography (SPECT) combined with Epstein-Barr virus DNA (EBV-DNA) in CSF for the diagnosis of AIDS-related primary CNS lymphoma (PCNSL). PATIENTS AND METHODS: All human immunodeficiency virus (HIV)-infected patients with focal brain lesions observed between June 1996 and March 1998 underwent lumbar puncture and 201Tl SPECT. Each CSF sample was tested with polymerase chain reaction (PCR) for EBV-DNA. RESULTS: Thirty-one patients were included, 13 with PCNSL and 18 with nontumor disorders. In 11 PCNSL patients, EBV-DNA was positive. Thallium-201 uptake ranged from 1.90 to 4.07 in PCNSL cases (mean, 2.77; 95% confidence interval [CI], 2.35 to 3.19) and from 0.91 to 3.38 in nontumor patients (mean, 1.62; 95% CI, 1.30 to 1.94) (P<.0002). Using a lesion/background ratio of 1.95 as cutoff, a negative SPECT was found in one PCNSL case and 16 nonneoplastic cases. A cryptococcoma and a tuberculoma showed highly increased 201Tl uptake. Epstein-Barr virus DNA was never detected in nonneoplastic patients. For PCNSL diagnosis, hyperactive lesions showed 92% sensitivity and 94% negative predictive value (NPV), whereas positive EBV-DNA had 100% specificity and 100% positive predictive value. The presence of increased uptake and/or positive EBV-DNA had 100% sensitivity and 100% NPV. CONCLUSION: Combined SPECT and EBV-DNA showed a very high diagnostic accuracy for AIDS-related PCNSL. Because PCNSL likelihood is extremely high in patients with hyperactive lesions and positive EBV-DNA, brain biopsy could be avoided, and patients could promptly undergo radiotherapy or multimodal therapy. On the contrary, in patients showing hypoactive lesions with negative EBV-DNA, empiric anti-Toxoplasma therapy is indicated. In patients with discordant SPECT/PCR results, brain biopsy seems to be advisable.  (+info)

Effect of long-term exercise training on regional myocardial perfusion changes in patients with coronary artery disease. (5/874)

The cardiac rehabilitation of patients with coronary artery disease (CAD) promotes exercise tolerance, improves left ventricular function, and decreases the heart rate and systolic blood pressure at the same load intensity. Several studies have shown that cardiac rehabilitation improves myocardial perfusion in CAD patients. However, the long-term (> or = 1 year) effect of cardiac rehabilitation on myocardial perfusion is still controversial. The effect of long-term exercise training on myocardial perfusion in CAD patients was assessed using thallium-201 (201Tl) exercise studies at a baseline (4 months after the onset of CAD) and at a 1-year or more follow-up in 58 patients with stable CAD. The subjects had been divided into a training group (n=35) participating in supervised exercise 2 times per week for the follow-up period, and the control group (n=23). There was an improvement in the myocardial perfusion on stress 201Tl scintigraphy in 20 of the 35 (57.1%) trained patients and in 3 of the 23 (13.0%) of the control patients (p<0.001). The number of 201Tl stress myocardial perfusion defect segments was significantly decreased after the cardiac rehabilitation training (231 to 153 segments), but showed no change in the control group (158 to 156 segments) (p<0.01). In spite of no significant differences in the number of involved coronary arteries, it improved (12/17 patients: 70.6%) more in the patients who had trained for more than 2 years compared to the patients who had trained for less than 2 years. The exercise tolerance increased in 25 of the 35 training group patients (71.4%), and in only 3 of the 23 control group patients (13.0%). The peak double products increased from 20,131+/-6,010 to 28,370+/-5,600 (p<0.01) in the training group, and showed no change in the control group (20,567+/-5,112 to 20,964+/-7,728 (NS)). The results indicated that the long-term physical training increased exercise tolerance and the double products of CAD patients. In addition, the training resulted in improved cardiac perfusion as evidenced by 201Tl scintigraphy. The findings suggest that exercise training is an advisable and effective treatment for patients with CAD.  (+info)

Residual cardiomyocytes and scintigraphic findings in advanced coronary artery disease: correlation with technetium-99m-tetrofosmin and thallium-201 single photon emission computed tomography. (6/874)

A 68-year-old man suffering from chronic heart failure due to coronary artery disease (CAD) underwent rest technetium-99m (99mTc)-tetrofosmin and thallium-201 (201Tl) with reinjection studies, but died thereafter. The heart was removed and sectioned into short-axis slices and examined by gross and microscopic pathologic methods. A close correlation between the amount of residual cardiomyocytes and the level of regional tracer activity in the left ventricular wall was obtained for redistribution 201Tl, reinjection 201Tl and rest 99mTc tetrofosmin images. The correlation coefficients were r=0.901 for the 201Tl redistribution images, r=0.913 for the 201Tl reinjection images and r=0.917 for the rest 99mTc-tetrofosmin images. This case report provides further evidence of the validity of SPECT tetrofosmin imaging for the determination of myocardial viability in CAD.  (+info)

Assessment of regional and global left ventricular function by reinjection T1-201 and rest Tc-99m sestamibi ECG-gated SPECT: comparison with three-dimensional magnetic resonance imaging. (7/874)

OBJECTIVES: The purpose of this study was to test the ability of reinjection thallium-201 and rest technetium-99m sestamibi ECG (electrocardiographic)-gated SPECT (i.e., reinjection-g-SPECT [single-photon emission computed tomography] and MIBI-g-SPECT) to determine regional and global functional parameters. BACKGROUND: The ECG-gated perfusion SPECT was reported to provide accurate left ventricular ejection fraction (LVEF) using an automated algorithm. We hypothesized that other various functional data may be obtained using reinjection-g-SPECT and MIBI-g-SPECT. METHODS: Reinjection-g-SPECT, MIBI-g-SPECT, and three-dimensional magnetic resonance imaging (3DMRI) were conducted in 20 patients with coronary artery disease. Regional wall motion (RWM) and wall thickening (RWT) were analyzed using semiquantitative visual scoring by each g-SPECT and 3DMRI. The left ventricular end-systolic and end-diastolic volumes (EDV, ESV) and LVEF estimated by reinjection- and MIBI-g-SPECT were compared with the results of 3DMRI. RESULTS: A high degree of agreement in RWM and RWT assessment was observed between each g-SPECT and 3DMRI (kappa >.70, p < .001). The LVEF values by reinjection- and MIBI-g-SPECT correlated and agreed well with those by 3DMRI (reinjection: r = .92, SEE = 5.9%, SD of differences = 5.7%; sestamibi: r = .94, SEE = 4.4%, SD of differences = 5.1%). The same also pertained to EDV (reinjection: r = .85, SEE = 18.7 ml, SD of differences = 18.4 ml; sestamibi: r = .92, SEE = 13.1 ml, SD of differences = 13.0 ml) and ESV (reinjection: r = .94, SEE = 10.3 ml, SD of differences = 10.3 ml; sestamibi: r = .97, SEE = 6.7 ml [p < .05 vs. reinjection by F test], SD of differences = 6.6 ml [p < .05 vs. reinjection by F test]). CONCLUSIONS: Reinjection- and MIBI-g-SPECT provide clinically satisfactory various functional data. These functional data in combination with the perfusion information will improve diagnostic and prognostic accuracy without an increase in cost or the radiation dose to the patients.  (+info)

Spontaneous late improvement of myocardial viability in the chronic infarct zone is possible, depending on persistent TIMI 3 flow and a low grade stenosis of the infarct artery. (8/874)

OBJECTIVE: In the chronic phase of myocardial infarction, the relation between myocardial recovery and infarct related artery status remains unclear. The spontaneous changes in rest-redistribution thallium defect size were prospectively studied over six months in 52 patients with chronic Q wave myocardial infarction. DESIGN: Changes in rest thallium defect size, thallium uptake in the infarct area, and radionuclide left ventricular ejection fraction were compared to the quantitative coronary angiogram data. Two groups of patients were considered: patients with a percentage of stenosis below 100% (group 1, n = 31); and patients with an occluded artery (group 2, n = 21). RESULTS: In the overall population, the mean (SD) defect size decreased from 28.2 (17.2)% to 24.9 (19.3)% of the whole myocardium (p = 0.01), while, in this area, the thallium uptake increased from 62.9 (13.7)% to 66. 9 (15.6)% (p < 0.001). At the time of inclusion, the defect size, thallium uptake, and ejection fraction were similar in both groups. In group 1 patients only, the reduction in defect size correlated with the improvement in ejection fraction (r = 0.41, p = 0.02) and was related to the percentage of coronary artery stenosis. TIMI 3 patients reduced the defect size while other patients increased this defect (-5.1 (7.0)% v +11.0 (14.4)%, p < 0.001). In contrast, no significant relations were found in group 2 patients. CONCLUSION: Late spontaneous recovery in thallium defect can occur in patients with a patent infarct related artery, depending on the TIMI flow grade and a low grade stenosis of the infarct related artery, and is associated with functional improvement.  (+info)

TY - JOUR. T1 - Comparison of differential diagnostic capabilities of 201Tl scintigraphy and fine-needle aspiration of thyroid nodules. AU - Okumura, Yoshihiro. AU - Takeda, Yoshihiro. AU - Sato, Shuhei. AU - Komatsu, Megumi. AU - Nakagawa, Tomio. AU - Akaki, Shiro. AU - Kuroda, Masahiro. AU - Joja, Ikuo. AU - Hiraki, Yoshio. PY - 1999/12/1. Y1 - 1999/12/1. N2 - We assessed the ability of 201Tl planar scintigraphy and fine-needle aspiration (FNA) biopsy to differentiate malignant from benign lesions by comparing the findings of these techniques with those of surgical histopathology for 107 patients with 109 thyroid nodules. Methods: 201Tl (74 MBq) was injected intravenously, and an early image and a delayed image were acquired after 10 and 120 min, respectively, for 10 min each. For 201Tl planar scintigraphy, accumulation of the tracer in the nodules was visually scored and the nodules were grouped. Group A showed high activity in both early and delayed images. Group B revealed high activity in ...
Detecting viable myocardium and predicting functional improvement: comparisons of positron emission tomography, rest-redistribution thallium-201 single-photon emission computed tomography (SPECT), exercise thallium-201 reinjection SPECT, I-123 BMIPP SPECT and dobutamine stress echocardiography ...
A possible limitation of intravenously administered perfusion tracers in detecting hibernating myocardium is their poor availability in low-flow areas. We have hypothesized that intracoronary administration might overcome such a limitation. In two patients with a previous anterior myocardial infarction and a severe residual stenosis of the left anterior descending coronary artery, technetium-99m-sestamibi (74 MBq) was selectively injected into the infarct-related coronary artery before successful PTCA. SPECT imaging was carried out 1 hour after the PTCA. In patient 1, evident tracer uptake was detected in the majority of the antero-apical dys-synergic area, previously characterized by a severe irreversible defect (less than 50% of peak activity) at rest-redistribution thallium SPECT (mismatched pattern); in patient 2, no uptake of sestamibi was detected in the dys-synergic area showing a severe irreversible defect (less than 50% of peak activity) at rest-redistribution thallium SPECT, (matched
Hyperchaos is a step towards the X-attractor. The X-attractor is the radically new class of attractors that arises with the fourth dimension (just as chaos arises in the third, oscillation in the second, and steady state in the first). It is still elusive. Hyperchaos (Paul Rapp suggested in 1977 that this name was superior to superchaos, as I first tended to call it) arises if a 2D cross section through a 3D flow is re-injected (via the fourth dimension) in an expanding manner, expanding in two directions rather than a single one. In other words, it is a straightforward generalization of the reinjection which yields chaos in three dimensions (reinjection, after expansion, back towards the middle of a spiral). Now, it is reinjection towards the tip of an expanding screw. The expanded and folded-over walking-stick map in a cross section is hence replaced by a folded-towel map (the product of 2 folding-overs). And the former Cantor sets become Julia sets, if you like scary terms. The first ...
OBJECTIVES We sought to ascertain the utility of adenosine thallium-201 tomography for assessing graft stenoses late after coronary artery bypass graft surgery. BACKGROUND Although pharmacologic perfusion imaging has been increasingly used in the assessment of patients with coronary artery disease, the value of this stress modality for detecting coronary artery bypass graft stenosis late after surgery is unknown. METHODS We studied 109 patients who underwent both adenosine thallium-201 tomography and coronary angiography at 6.7 +/- 4.8 (mean +/- SD) years after coronary artery bypass graft surgery. Adenosine thallium-201 tomography was assessed quantitatively by computer-generated polar maps of the myocardial thallium-201 activity. RESULTS On coronary angiography, significant graft stenoses were present in 68 patients, 65 of whom had a corresponding perfusion defect as shown by thallium-201 tomography (sensitivity 96%). Significant stenoses were present in 107 (37.8%) of 283 grafts. The overall
Noninvasive assessment of myocardial viability has proved clinically useful to distinguish hibernating or stunned myocardium from irreversibly injured myocardium in patients with chronic CAD or recent myocardial infarction who exhibit severe regional and global LV dysfunction. A variety of noninvasive methodologies are undergoing investigation and validation for determination of accuracy in the detection of preserved viability in akinetic and severely hypokinetic myocardium. These techniques include SPECT perfusion imaging with 201Tl or one of the new 99mTc-labeled agents, such as 99mTc sestamibi; SPECT imaging of 123I-labeled fatty acid analogs; PET imaging of regional flow and 18F-labeled FDG uptake; and assessment of inotropic reserve by use of dobutamine echocardiography. A major clinical objective when one of these techniques is used in CAD patients with ischemic cardiomyopathy is to identify those who will benefit most from coronary revascularization with respect to postoperative ...
TY - JOUR. T1 - Poststress redistribution of thallium-201 in patients with coronary artery disease, with and without prior myocardial infarction. AU - Verani, Mario S.. AU - Jhingran, Satish. AU - Attar, Mohammed. AU - Rizk, Assad. AU - Quiñones, Miguel A.. AU - Miller, Richard R.. PY - 1979/1/1. Y1 - 1979/1/1. N2 - To elucidate patterns of thallium-201 redistribution with and without myocardial infarction, to determine the value of thallium-201 redistribution scintigrams in identifying additional ischemic myocardium in the presence of prior myocardial infarction and to delineate the relation of collateral vessels to redistribution, thallium-201 myocardial perfusion scintigraphy was performed immediately after exercise and 4 to 6 hours after exercise in 46 patients with coronary artery disease and 12 normal control subjects. Scintigrams were interpreted in the conventional visual manner as well as with use of computer-processed myocardial perfusion ratios. Normal control subjects demonstrated ...
Gilles Barone-Rochette, Mélanie Leclère, Alex Calizzano, Estelle Vautrin, Gallazzini-Crepin Céline, et al.. Stress thallium-201/rest technetium-99m sequential dual-isotope high-speed myocardial perfusion imaging validation versus invasive coronary angiography. Journal of Nuclear Cardiology, Springer Verlag, 2015, 22 (3), pp.513-522. ⟨10.1007/s12350-014-0016-0⟩. ⟨inserm-02440579⟩ ...
The prevalence of a high risk exercise (Ex) Tl-201 (Tl) scintigram (scint) was determined in 295 consecutive patients (pts) with angiographic (angio) (,50% stenosis) coronary artery disease (CAD) and correlated with extent of CAD and Ex stress test findings. A high risk scint by quantitative criteria was defined as either: 1) a typical left main (LM) CAD pattern showing greater than or equal to 25% homogenous disease in Tl activity in septal and posterolateral walls; 2) a multivessel disease (MVD) pattern showing abnormal Tl uptake and/or washout in multiple vascular scan segments; 3) increased lung Tl uptake. The typical LMCAD pattern was observed in 6 of 43 pts (14%) with LMCAD compared to 2% of 53 pts with 3VD (p=0.03), 3% of 99 pts with 2VD (p=0.02) and 2% of 100 pts with 1VD (p-0.01). The MVD scint pattern was seen in 67% of pts with LMCAD compared to 49% (p=0.05) in 3VD pts, 41% (p=0.004) in 2VD pts and 24% (p=,0.0001) in 1VD pts. Prevalence of abnormal lung Tl was comparable in LMCAD ...
Agatha Christie, who worked as a pharmacist, used thallium as the agent of murder in her detective fiction novel The Pale Horse. The first clue to the murder method came from the victims loss of hair.. Dr. Félix-Roland Moumié, a leader of the Cameroonian anticolonial armed struggle against France, was murdered by thallium poisoning on October 15, 1960. A French agent posing as a journalist was the main suspect of this murder.[1]. The 1995 film The Young Poisoners Handbook was based on the activities of Graham Frederick Young, who killed at least three people with thallium in the 1960s and 1970s. Around the same time, an incidence of thallium poisoning was reported in Beijing. The victims classmate asked for help through the Usenet newsgroup, newly established in mainland China at that time. Worldwide news reports covered the ensuing joint efforts by physicians around the world to diagnose the case.. Australian serial killer Caroline Grills was known as Auntie Thally for her choice of ...
Dilsizian, V., Arrighi, J. A., Diodati, J. G., Quyyumi, A. A., Alavi, K., Bacharach, S. L., et al. (1994). Myocardial viability in patients with chronic coronary artery disease: comparison of 99 mtc-sestamibi with 201 thallium reinjection and [18f] fluorodeoxyglucose. Circulation, 89( 2 ), 578-87. doi:10.1161/01.cir.89.2. ...
Its not often that I come across a method to kill a character in a novel with delightful efficiency and flair, but thallium is one of those chemicals. Thallium is a bluish-white metal that, in pure form, is odorless and tasteless. When combined with chorine, it turns colorless and dissolves well in water. That means…
Thallium is a toxic metal that causes serious fatigue. It is added to gasoline and released into the air by car exhaust. Detox Thallium toxicity on mineralpower.com
Buy Boiron Homeopathic pellets THALLIUM SULFURICUM € 4.68 on Care and nature, your bio pharmacy online. Easy, fast and secure! Order here THALLIUM SULFURICUM 5C 9C Pellets Boiron.
[65 Pages Report] Check for Discount on thallium nitrate Global Market and Forecast Research report by ChemReport. DescriptionWe provide independent and unbiased information on manufacturers, prices, production...
TY - JOUR. T1 - Myocardial infarct size - thallium 201 perfusion scintigraphy versus enzymatic (CK-MB) estimates. AU - Witztum, K.. AU - Fletcher, James. AU - Lindeman, J.. PY - 1978. Y1 - 1978. UR - http://www.scopus.com/inward/record.url?scp=0018174724&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0018174724&partnerID=8YFLogxK. M3 - Article. AN - SCOPUS:0018174724. VL - 58. JO - Circulation. JF - Circulation. SN - 0009-7322. IS - 4 II. ER - ...
Korkmaz M.E., Oto A., Saraçlar Y., Oram E., Oram A., Uğurlu Ş., Karamehmetoğlu A., Karaağaoğlu E. Levels of IgE in the Serum of Patients with Coronary Arterial Disease. Int J Cardiol 1991;31:199-204. Oto A., Müderrisoğlu H., Özin M.B., Korkmaz M.E., Karamehmetoğlu A., Oram A., Oram E., Uğurlu Ş. Quality of Life in Patients with Rate Responsive Pacemakers: A Randomized Cross-Over Study. PACE 1991;14:800-806. Korkmaz M.E., Arık N., Oto A., Turgan Ç., Yasavul Ü., Çağlar Ş., Işımer A., Sayar A. Cadmium, Hypertension and Smoking. Nephron 1992;60:116. Korkmaz M.E., Mahmarian J.J., Guidry G.W., Verani M.S. Safety of single-site adenosine thallium-201 scintigraphy. Am J Cardiol 1994;73:200-204. Korkmaz M.E., Müderrisoğlu H., Özdemir F.N., Kayataş M., Ertürk A. QT Interval Lengthening During Haemodialysis: Is There a Potential Risk for Torsade de Pointes? Nephrol Dial Transplant 1997;12(2):365. Kayataş M., Ertürk A., Müderrisoğlu H., Korkmaz M.E., Özdemir F.N. Acetate ...
Thallium chloride | TlCl or ClTl | CID 24642 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
The thallium stress test is a technique that can show how well the blood flows to the heart muscle and through the heart when you are exerting yourself and when you are at rest.
Ill be going for a Thallium Stress Test in a couple days. They said it would take 3-4 hours, not to have any caffeine and wear comfortable shoes and clothes. Any other suggestions or tips on what to do? I plan on doing a temporary basal and cutting down by 50% for an hour before and during the test. Rose ---------------------------------------------------------- for HELP or to subscribe/unsubscribe, contact: [email protected] ...
12048-36-1 - JCLGSRAPELTTLY-UHFFFAOYSA-N - Bismuth, compd. with thallium (1:1) - Similar structures search, synonyms, formulas, resource links, and other chemical information.
Author Summary The ability of cells to respond to chemical signals present in the environment is of upmost importance for life. In the developing embryo, cells crawl along graded fields of chemical cues to aggregate into organized patterns. This process is an example of chemotaxis. It is a complex phenomenon, where external signals are transduced into internal chemical pathways leading to directional movement. Differential reorganization of the internal structure is called polarization, and it involves regulatory proteins as well as cytoskeletal elements. In this work, we propose a mathematical and computational model for the quantitative study of chemotactic pathfinding in neural cells. Our starting point is the recent finding that, for such cells, an early polarization event is the redistribution on the membrane of cue-ligated receptors, transported by the cytoskeletal structures, which act as a sort of conveyor belt. We show that this proposed mechanism, connecting in a closed loop cue sensing and
View Test Prep - MIC 103L-A Exam 1.pdf from MIC 103L at University of California, Davis. MIC 103L-A Exam 1 (01 May 2017) Please put your Name and Student ID Number on your ScanTron. Please fill-in
It almost sounds like you are trying to ,, replace the principal of having fill-in ,, digis that respond to WIDE1-1 at low ,, elevations and high WIDEn-N digis... , , This idea was born dead. Not so fast. It was the only way in the USA to allow the construction of FILL-IN digis using the hundreds of thousands of existing available TNCs already in hand and not require the use of a $280 specialized new-N APRS TNC. , Our scheme, where everybody uses WIDE2-2, , and fill-in-digis respond only to packets , from a certain geographical region, works far better. Yes, it is slightly better because the length of each packet is shorter without having to carry the initial WIDE1-1. And it is the best solution, if people are willing to buy all-new hardware for fill-in digis. It is good to hear that your country is able to do this. We should be able to slowly migrate that direction now that many innexpensive new-N TNC digipeaters are available. But for years, users will still have to use the path of WIDE1-1 ...
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
This fill in is an exceptional way to invite your friends and family to your rehearsal dinner. The blue and silver borders are a great combination for any wedding occasion.
Thallium Chromate Tl2CrO4 bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.
Thallium Bromide TlBr bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.
TY - JOUR. T1 - Acute hemodynamic changes during intravenous dipyridamole thallium imaging early after infarction. AU - Miller, D. Douglas. AU - Scott, Ronald A.. AU - Riesmeyer, Jeffrey S.. AU - Chaudhuri, Tuhin K.. AU - Blumhardt, Ralph. AU - Boucher, Charles A.. AU - ORourke, Robert A.. N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.. PY - 1989/10. Y1 - 1989/10. N2 - In order to determine the safety and hemodynamic effects of intravenous dipyridamole infusion for thallium-201 scintigraphy in patients with acute ischemic syndromes, 10 patients with recent uncomplicated myocardial infarction (7 ± 2 days pre-test) had central pressures and cardiac output values measured serially in a coronary care unit during and after the administration of dipyridamole (0.56 mg/kg over 4 minutes) and following aminophylline reversal (50 to 150 mg intravenously) of dipyridamole effect. Cardiac medications were not discontinued. Double product did not change significantly (8522 ± 1811 versus ...
TY - JOUR. T1 - Use of rotating (cine) planar projection images in the interpretation of a tomographic myocardial perfusion study. AU - Hendel, Robert C.. AU - Gibbons, Raymond J.. AU - Bateman, Timothy M.. N1 - Copyright: Copyright 2019 Elsevier B.V., All rights reserved.. PY - 1999. Y1 - 1999. UR - http://www.scopus.com/inward/record.url?scp=0032916119&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0032916119&partnerID=8YFLogxK. U2 - 10.1016/S1071-3581(99)90084-3. DO - 10.1016/S1071-3581(99)90084-3. M3 - Editorial. C2 - 10327108. AN - SCOPUS:0032916119. VL - 6. SP - 234. EP - 240. JO - Journal of Nuclear Cardiology. JF - Journal of Nuclear Cardiology. SN - 1071-3581. IS - 2. ER - ...
Find Thallium sulfate importer Manufacturers, Thallium sulfate importer Suppliers & Wholesalers of Thallium sulfate importer from China, Hong Kong, USA & Thallium sulfate importer Products from India at TradeKey.com
Study Objective: To determine whether clinical markers and preoperative dipyridamole-thallium imaging are both useful in predicting ischemic events after vascular surgery.. Design: Retrospective, observational study.. Setting: University medical center.. Patients: Two hundred fifty-four consecutive patients referred to a nuclear cardiology laboratory before surgery. Forty-four patients had surgery cancelled or postponed after clinical evaluation and dipyridamole-thallium imaging. Surgery was not confirmed for ten. Two hundred patients receiving prompt vascular surgery were the study group.. Measurements and Main Results: Thirty patients (15%) had early postoperative cardiac ischemic events, with cardiac death in 6 (3%) and nonfatal myocardial infarction in 9 (4.5%). Logistic regression identified five clinical predictors (Q waves, history of ventricular ectopic activity, diabetes, advanced age, angina) and two dipyridamole-thallium predictors of postoperative events. Of patients with none of the ...
Objectives. We sought to evaluate the clinical use and cost-analysis of acute rest technetium-99m (Tc-99m) tetrofosmin single-photon emission computed tomographic (SPECT) myocardial perfusion imaging in patients with chest pain and a normal electrocardiogram (ECG).. Background. Current approaches used in emergency departments (EDs) for treating patients presenting with chest pain and a nondiagnostic ECG result in poor resource utilization.. Methods. Three hundred fifty-seven patients presenting to six centers with symptoms suggestive of myocardial ischemia and a nondiagnostic ECG underwent Tc-99m tetrofosmin SPECT during or within 6 h of symptoms. Follow-up evaluation was performed during the hospital period and 30 days after discharge. All entry ECGs, SPECT images and cardiac events were reviewed in blinded manner and were not available to the admitting physicians.. Results. By consensus interpretation, 204 images (57%) were normal, and 153 were abnormal (43%). Of 20 patients (6%) with an acute ...
Thallium-201 SPECT has been proposed as a method for assessment of malignancy grade in gliomas.3-7 There is a selective uptake of 201Tl in highly malignant glioma cells. The mechanism behind intracellular Tl uptake is probably an active transport by less selective ion channels in malignantly transformed glial cells.19-21 The cellular uptake is not solely related to cell biology in the tumour. The uptake is multifactorial, depending also on blood flow in the tumour, extent of pathological vessel invasion, and extent of blood-brain barrier breakdown.. In a recent study we evaluated the accuracy in preoperative glioma malignancy grading on the basis of 201Tl uptake indices, CT findings, and histopathology.22 We found a significant correlation between CT enhancement volumes and 201Tl uptake indices in high grade gliomas. Uptake of 201Tl in non-enhancing gliomas was very low, independent of tumour malignancy grade. A disrupted blood-brain barrier seems to be a prerequisite for intracerebral ...
Thallium Stress Test (Thallium 201 Exercise Test) is the same as a treadmill exercise test. This test checks the function of the heart during and after physical activity.
Tl2SO4 - THALLIUM (I) SULPHATE. Reactions with Thallium (I) sulphate Tl2SO4 Obtaining Thallium (I) sulphate Tl2SO4. Properties: hydrolysis, soluble in dilute sulfuric acid, decomposed ...
Get information, facts, and pictures about thallium at Encyclopedia.com. Make research projects and school reports about thallium easy with credible articles from our FREE, online encyclopedia and dictionary.
Thallium (af græsk θαλλός, thallos, dvs. en grøn kvist)[7] blev opdaget i 1861 ved hjælp af flammespektroskopi.[8] Navnet skyldes thalliums klare grønne spektrallinje.[9] Efter offentliggørelsen af en forbedret flammespektroskopi-metode udviklet af Robert Bunsen og Gustav Kirchhoff[10] og opdagelsen af cæsium og rubidium i hhv. 1859 og 1860 blev flammespektroskopi en anerkendt metode til bestemmelse af mineralers og kemiske produkters bestanddele. William Crookes og Claude-Auguste Lamy begyndte begge at bruge metoden. Crookes benyttede den til at undersøge selenforbindelser fra blykammeret på en svovlsyrefabrik ved Abberode i Harzen for tellur. Prøverne til sine undersøgelser af selencyanid havde han modtaget nogle år forinden.[11][12] I 1862 lykkedes det Crookes at isolere små mængder af det nye grundstof thallium og måle egenskaberne for nogle af dets forbindelser.[13] Claude-Auguste Lamy benyttede et spektrometer magen til Crookes til at bestemme indholdet af en ...
Recent advances in nuclear myocardial perfusion imaging (MPI) have made it possible to develop a dual-isotope protocol for high-speed acquisition with image quality and radiation delivery comparable to that obtained with conventional single isotope p
sir Stress thalium test result shows the following results:- SA.HLA & VLA section taken post stress and during rest reveal -no stress indused I.V.dilation. - reversible perfusion defect in anterior...
Dive into the research topics of Phantom evaluation of simultaneous thallium-201/technetium-99m aquisition in single-photon emission tomography. Together they form a unique fingerprint. ...
La Roche Posay Skincare and Skincare on sale. Redermic [+] Intensive Daily Anti-Wrinkle Firming Fill-In Care (Normal To Combination Skin) (Unboxed) by La Roche Posay is only $11.90 at fragranceX.com, FREE Shipping on orders over $35. Redermic [+] Intensive Daily Anti-Wrinkle Firming Fill-In Care (Normal To Combination Skin) (Unboxed) La Roche Posay Skincare All products are original, authentic name brands. We do not sell knockoffs or imitations.
ESPI High Purity Metal Specialists since 1950 with a company mission to provide a reliable resource for researchers high purity metals, metal compounds and metal alloys for all major universities, international and domestic manufacturing companies and corporate R&D laboratories worldwide, as well as most U.S. government research laboratories. Also manufacturer of DeContam®, an aggressive water based, non-hazardous cleansing agent specifically formulated for the electronic, aerospace and nuclear industries.
ESPI High Purity Metal Specialists since 1950 with a company mission to provide a reliable resource for researchers high purity metals, metal compounds and metal alloys for all major universities, international and domestic manufacturing companies and corporate R&D laboratories worldwide, as well as most U.S. government research laboratories. Also manufacturer of DeContam®, an aggressive water based, non-hazardous cleansing agent specifically formulated for the electronic, aerospace and nuclear industries.
To see a rotating video of (almost) any of the samples of Thallium from The Elements, click it below. Links will open in a new window ...
Thallium iii acetate, or thallous acetate, is used in microbiology as a selective growth mediumngraded products supplied by spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.
Thallium is released into the biosphere from both natural and anthropogenic sources. It is generally present in the environment at low levels; however, human activity has greatly increased its...
Dr. Hurwitz would like the scope of our study to be broader. Our study was designed to address a specific issue-the identification of three-vessel or left-main disease in patients with a normal resting electrocardiogram who had exercise testing. This particular scenario in exercise electrocardiography can be expected to be at its best (yielding interpretable ST segments in the setting of severe disease), whereas thallium-201 scintigraphy is not (a relative perfusion technique where abnormalities in all three territories occur in less than one third of patients with three-vessel disease) [1]. We agree that there are many other useful applications of perfusion imaging in which Bayesian principles are used. However, we feel that it is important to determine in which cases such technology is effective and in which cases similar performance can be provided at less expense ...
Spontaneous slip on frictional interfaces involves both short-lived inertially-driven events and long-term quasi-static sliding. An example of considerable practical importance is the response of faults in the Earths crust to tectonic loading. The response combines earthquakes that cause destructive ground motions and aseismic slip. Numerical models are needed to study the physics and mechanics of such complex behavior. In part, the models can help understand the observed slip patterns and interpret them in terms of constitutive properties of rocks determined in the lab. This thesis contains two main contributions. The first one is the development and implementation of a 3D methodology for simulations of spontaneous long-term interface slip punctuated by rapid inertially driven ruptures. Our approach is the first one to combine long-term deformation histories and the resulting stress redistribution on faults with full inclusion of inertial effects during simulated earthquakes in the context of ...
Covers every aspect of evaluation and treatment of patients who suffer from chronic coronary syndromes. Provides both evidenced based recommendations from the most recent guidelines from the major cardiology societies: AHA, ACC, and ESC, as well as prac
Your question is a very good one, and deserves a thoughtful answer. Ill try to give you that. While your symptoms at present are not the same as what you felt before and during your heart attack, and while it is possible to have pain (not muscle pain necessarily, but sometimes nerve pain) for this long post CABG, it seems to me at least suspicious enough to warrant a thallium scan stress test (unless thats what you had -- you only mention stress test as in stress test, plain). A plain stress test is not nearly as useful as one with nuc scan, and is still less invasive than an angiogram. If your doctor isnt willing to go the half-step to do this and clear the air, then I guess either a second opinion or an angiogram are your two best alternatives, because what you describe would raise some flags for me, especially in a woman, since women usually do have atypical cardiac pain, as opposed to men, whose classic pattern dominates all the textbooks. The reason for that is that for ages men were ...
a p , 0.05 versus baseline. Data are expressed as mean value ± SD. DBP = diastolic blood pressure; HR = heart rate; RPP = rate-pressure product; SBP = systolic blood pressure. ...
This fill-in invitation is designed for the event held by one host. The crisp white card has a thick regent blue border and allows one to write ones name on top so that it will be followed by, requests the pleasure of your company. This invitation set
トレッドミル運動負荷断層タリウム心筋シンチグラフィ(^,201,Tl-SPECT)による6年間の心疾患長期予後の検討 Prediction of 6-year Prognosis for Cardiac Event by Thallium-201 Single-Photon Emission Computed Tomography(SPECT) with Treadmill Exercise Test ...
Hi: I had a thallium stress test done and found that I had a blockage. I saw a cardiologist who informed me that by what he views on the pictures from the thallium stress test and that I did re...
The scientists tested the thallium concentrations in the dogs hair, and found that there were 8.2 µg/g in samples taken on day 19. The thallium concentration increased to 16.4 µg/g 3 months after exposure, and then slowly decreased to 13.4 µg/g in the fifth month, and finally nondetectable 7 months after exposure ...
Ions of the element thallium, introduced into a solution outside the model cells, help the researchers with this process. When the thallium ions reach the inner part of the model cells, they extinguish the fluorescent glow. This usually happens very slowly, but when two gramicidins pair up along the lipid bilayer, they form channels that help ions cross the membrane and quickly dim the glow ...
As a mitochondria aware person, this article grabbed my whole attention. You articulated and particularly highlighted the risk of Thallium toxicity. Thank you for bringing the awareness of Thallium…
This Lithuanian entry was created from the translations listed at thallium. It may be less reliable than other entries, and may be missing parts of speech or additional senses. Please also see talis in the Lithuanian Wiktionary. This notice will be removed when the entry is checked. (more information) August 2010. ...
A dramatic rash, made of red or purple welts with a bulls-eye, blistery center may be like no other rash a parent has ever seen before.
Please put your name below if youre interested in attending. Cutoff date for deciding the sprint dates is 23rd May 2020, please fill-in your availability for dates in between 1-15 June before deadline. Keep list alphabetically sorted. ...
Please put your name below if youre interested in attending. Cutoff date for deciding the sprint dates is 23rd May 2020, please fill-in your availability for dates in between 1-15 June before deadline. Keep list alphabetically sorted. ...
Fill in definition, a person or thing that fills in, as a substitute, replacement, or insertion: The company used a fill-in for workers on vacation. See more.
鉈(拼音:tā,注音:ㄊㄚ;英语:thallium)是化學元素,符號為Tl,原子序為81,是質軟的灰色貧金屬,在自然界並不以單質存在。鉈金屬外表和錫相似,但會在空氣中失去光澤。兩位化學家威廉·克魯克斯和克洛德-奧古斯特·拉米在1861年獨立發現了這一元素 ... Manual for reactor produced radioisotopes (PDF). International Atomic Energy Agency. 2003 [2010-05-13].. ... 1861年,威廉
Prussian blue/radiogardase a chelation agent to treat radio-Cesium and thallium consumption, one of three the FDA ... Activated protein C. Chelation therapy a countermeasure for treating internal radio-isotope contamination. DPTA a chelation ...
By the mid 1970s, scientists and clinicians alike began using thallium-201 as the radioisotope of choice for human studies. ... The usual isotopes for such studies are either Thallium-201 or Technetium-99m. The history of nuclear cardiology began in 1927 ... A comparison with thallium-201 and coronary angiography". Giornale Italiano di Cardiologia. 22 (7): 795-805. PMID 1473653. ... However, Love had expressed the same concern as many of his colleagues, namely that there were no suitable radioisotopes ...
In SPECT imaging, the patient is injected with a radioisotope, most commonly Thallium 201TI, Technetium 99mTC, Iodine 123I, and ... Scintigraphy ("scint") is a form of diagnostic test wherein radioisotopes are taken internally, for example, intravenously or ...
Heart Valves Replacement and all sorts of Cardiac Operations and procedures Radio Isotope Cardiology, Thallium Scan, ... young and old patients Radio Isotope Thyroid, Liver, Bone, Brain and other organs scanning, Hormonal Assays and Viral Markings ...
Thallium Scan, Echocardiography Radiotherapy Latest Physiotherapy Equipment, Rehabilitation Center and Orthopaedic Workshop ... and all sorts of Cardiac Operations and procedures Physiotherapy and Manual therapy on both indoor and outdoor basis Radio ...
The WBC used thallium-activated sodium iodide crystals. In radiology, he detected radium distribution and variation in tissues ... which now has the responsibility for all AEC-supported research on the effects of internally deposited radioisotopes, grew out ... Marinelli established the principles for dosage determination of internal radioisotopes in the human body In 1946, he developed ...
... radioisotope Radium Radon Radon fluoride Raman spectroscopy Raoult's law Redox Reduction Reflux Reversible reaction Rhazes ... Tabun Talc Talcum Tantalite Tantalum Tanzanite Teallite Technetium Telluride Tellurium Tennessine Terbium Tetryl Thallium ... Svante Arrhenius Syenite Sylvite synthetic radioisotope systematic element name ...
The radioisotope thallium-201 (as the soluble chloride TlCl) is used in small, nontoxic amounts as an agent in a nuclear ... Thallium stress test[edit]. A thallium stress test is a form of scintigraphy, where the amount of thallium in tissues ... See also: Category:Thallium compounds.. Thallium(III)[edit]. Thallium(III) compounds resemble the corresponding aluminium(III) ... and thallium(III). Thallium(III) oxide, Tl2O3, is a black solid which decomposes above 800 °C, forming the thallium(I) oxide ...
203Tl and 205Tl are the only stable isotopes and 204Tl is the most stable radioisotope with a half-life of 3.78 years. 207Tl, ... Thallium-202 (half-life 12.23 days) can be made in a cyclotron[2] while thallium-204 (half-life 3.78 years) is made by the ... Thallium (81Tl) has 37 isotopes with atomic masses that range from 176 to 212. ... Thallium Research Archived 2006-12-09 at the Wayback Machine. from Department of Energy ...
Thallium Research from Department of Energy *^ Manual for reactor produced radioisotopes from the International Atomic Energy ... Thallium-202 (half-life 12.23 days) can be made in a cyclotron[1] while thallium-204 (half-life 3.78 years) is made by the ... Isotopes of thallium. From Wikipedia, the free encyclopedia. This is an old revision of this page, as edited by JorisvS. (talk ... Thallium (Tl) has 37 isotopes which have atomic masses that range from 176 to 212. 203Tl and 205Tl are the only stable isotopes ...
207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes. Thallium-202 (half- ... Thallium (81Tl) has 41 isotopes with atomic masses that range from 176 to 216. 203Tl and 205Tl are the only stable isotopes and ... "Thallium Research". doe.gov. Department of Energy. Archived from the original on 2006-12-09. Retrieved 23 March 2018. Manual ... life 12.23 days) can be made in a cyclotron while thallium-204 (half-life 3.78 years) is made by the neutron activation of ...
... thulium-170 Thallium: thallium-204 Bismuth oxide: polonium-210 Thorium: uranium-233 RAF Lakenheath near nuclear disasters Black ... In 1968 a paper was published in the journal Nature, on a study of radioisotopes found in oysters from the Irish Sea, using ... The following substances were placed inside metal cartridges and subjected to neutron irradiation to create radioisotopes. Both ...
This series terminates with the stable isotope thallium-205. The total energy released from californium-249 to thallium-205, ... It is also known as a "radioactive cascade". Most radioisotopes do not decay directly to a stable state, but rather undergo a ... The ending isotope of this chain is now known to be thallium-205. Some older sources give the final isotope as bismuth-209, but ... The intermediate stages each emit the same amount of radioactivity as the original radioisotope (i.e. there is a one-to-one ...
Like most radioisotopes found in the radium series, 206Pb was initially named as a variation of radium, specifically radium G. ... terminates with the thallium isotope 205Tl. The three series terminating in lead represent the decay chain products of long- ... See lead-lead dating and uranium-lead dating). The longest-lived radioisotopes are 205Pb with a half-life of 17.3 million years ... A shorter-lived naturally occurring radioisotope, 210Pb with a half-life of 22.3 years, is useful for studying the ...
Thirty radioisotopes have been characterised, which range in mass number from 209 to 238. After 232Th, the most stable of them ... Any sample of thorium or its compounds contains traces of these daughters, which are isotopes of thallium, lead, bismuth, ... These rely on the fact that 232Th is a primordial radioisotope, but 230Th only occurs as an intermediate decay product in the ... Many polynary halides with the alkali metals, barium, thallium, and ammonium are known for thorium fluorides, chlorides, and ...
used in radioisotope thermoelectric generators (RTGs) and radioisotope heater units as an energy source for spacecraft ... Thallium-204 17057 TBq/kg (461 Ci/g) 3.78 years 763.4 Carbon-14 166.5 TBq/kg (4.5 Ci/g) 5730 years 49.5 (average) ... "Radioisotopes in Industry". World Nuclear Association.. *. Martin, James (2006). Physics for Radiation Protection: A Handbook. ... most commonly used medical radioisotope, used as a radioactive tracer Iodine-129 53. 76. 15,700,000 y. β−. 194 Cosmogenic. ...
A thallium stress test is a form of scintigraphy, where the amount of thallium-201 detected in cardiac tissues correlates with ... Main article: Radioisotope renography. Full body[edit]. Examples are gallium scans, indium white blood cell scans, iobenguane ... Thallium binds the K+ pumps and is transported into the cells. Exercise or dipyridamole induces widening (vasodilation) of ... Certain tests, such as the Schilling test and urea breath test, use radioisotopes but are not used to produce a specific image ...
A thallium stress test is a form of scintigraphy, where the amount of thallium-201 detected in cardiac tissues correlates with ... Certain tests, such as the Schilling test and urea breath test, use radioisotopes but are not used to produce a specific image ... Thallium binds the K+ pumps and is transported into the cells. Exercise or dipyridamole induces widening (vasodilation) of ... Areas of infarct or ischemic tissue will remain "cold". Pre- and post-stress thallium may indicate areas that will benefit from ...
The abundance of antimony in the Earth's crust is estimated to be 0.2 to 0.5 parts per million, comparable to thallium at 0.5 ... It also has 35 radioisotopes, of which the longest-lived is 125Sb with a half-life of 2.75 years. In addition, 29 metastable ...
Even in thallium-205 case above, once fully ionized, again reverts to lead. Due to its extraordinarily long half-life, for ... Bismuth-209 (209Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay ( ... The decay event produces a 3.14 MeV alpha particle and converts the atom to thallium-205. Bismuth-209 will eventually form ...
Manual for reactor produced radioisotopes. International Atomic Energy Agency. 2003. Hentet 2010-05-13.. (engelsk) ... Thallium(I)bromid er en lysfølsom gul forbindelse meget lig sølvbromid, mens det sorte thallium(I)oxid og thallium(I)sulfid ... Året efter isolerede Lamy thallium ved hjælp af elektrolyse. Thallium optræder i oxidationstrin +3 og +1 i salte. Thallium i ... Thallium (RO: Tallium) er et grundstof med kemisk symbol Tl og atomnummer 81 i det periodiske system. Thallium i sin rene, ...
Both thallium-208 and polonium-212 are radioactive daughter products of bismuth-212, and both decay directly to stable lead-208 ... Therefore, given a sample of a particular radioisotope, the number of decay events −dN expected to occur in a small interval of ... A number of experiments have found that decay rates of other modes of artificial and naturally occurring radioisotopes are, to ... Bismuth-209, however, is only very slightly radioactive, with a half-life greater than the age of the universe; radioisotopes ...
Usually a large flat crystal of sodium iodide with thallium doping in a light-sealed housing is used. The highly efficient ... Scintigraphy ("scint") is the use of gamma cameras to capture emitted radiation from internal radioisotopes to create two- ... usually thallium-201 or technetium-99m, medicinal imaging agent) a method of correlating the detected photons with their point ... is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. The applications of ...
Apart from 126Sn, with a half-life of 230,000 years, all the radioisotopes have a half-life of less than a year. The ... ISBN 978-1-56676-661-6. Dehaas, W.; Deboer, J.; Vandenberg, G. (1935). "The electrical resistance of cadmium, thallium and tin ... Simple eutectic systems, however, occur with bismuth, gallium, lead, thallium and zinc. Tin becomes a superconductor below 3.72 ...
The most commonly used radioisotope in PET 18F, is not produced in any nuclear reactor, but rather in a circular accelerator ... Nuclear medicine myocardial perfusion scan with thallium-201 for the rest images (bottom rows) and Tc-Sestamibi for the stress ... The most commonly used intravenous radionuclides are technetium-99m, iodine-123, iodine-131, thallium-201, gallium-67, fluorine ... for a 80 MBq thallium-201 myocardial imaging procedure. The common bone scan with 600 MBq of technetium-99m MDP has an ...
Thallium hydroxide (TlOH) is used mainly in the production of other thallium compounds. Thallium sulfate (Tl2SO4) is an ... Some radioisotopes have important roles in scientific research; a few are used in the production of goods for commercial use or ... Thallium is used in its elemental form more often than the other boron-group elements. Uncompounded thallium is used in low- ... The incidence of thallium poisoning, intentional and accidental, increased when thallium (with its similarly toxic compound, ...
... strontium radioisotopes MeSH D01.496.749.858 - sulfur radioisotopes MeSH D01.496.749.900 - thallium radioisotopes MeSH D01.496. ... iron radioisotopes MeSH D01.496.749.540 - krypton radioisotopes MeSH D01.496.749.560 - lead radioisotopes MeSH D01.496.749.590 ... xenon radioisotopes MeSH D01.496.749.960 - yttrium radioisotopes MeSH D01.496.749.980 - zinc radioisotopes MeSH D01.496.807.800 ... xenon radioisotopes MeSH D01.496.943.800 - yttrium radioisotopes MeSH D01.496.966.800 - zinc radioisotopes MeSH D01.524.500.040 ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Radioisotopes of caesium require special precautions: the improper handling of caesium-137 gamma ray sources can lead to ... 28 and thallium compounds with thallium in its +1 oxidation state closely resemble the corresponding potassium or silver ... Thallium is the heaviest stable element in group 13 of the periodic table. At the bottom of the periodic table, the inert pair ...
It is also known as a "radioactive cascade". Most radioisotopes do not decay directly to a stable state, but rather undergo a ... The total energy released from californium-249 to thallium-205, including the energy lost to neutrinos, is 66.8 MeV. ... The intermediate stages each emit the same amount of radioactivity as the original radioisotope (i.e. there is a one-to-one ... Half-lives have been determined in laboratories for many radioisotopes (or radionuclides). These can range from nearly ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... 27 radioisotopes have been observed, with the most stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half- ...
"81 Thallium". Elements.vanderkrogt.net. Retrieved 2008-09-12.. *^ "49 Indium". Elements.vanderkrogt.net. Retrieved 2008-09-12. ... Marinsky, J. A.; Glendenin, L. E.; Coryell, C. D. (1947). "The chemical identification of radioisotopes of neodymium and of ... Thallium 1861 W. Crookes 1862 C.-A. Lamy Shortly after the discovery of rubidium, Crookes found a new green line in a selenium ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... While most of germanium's radioisotopes decay by beta decay, 61. Ge. and 64. Ge. decay by β+. delayed proton emission.[46] 84. ... At least 27 radioisotopes have also been synthesized, ranging in atomic mass from 58 to 89. The most stable of these is 68. Ge ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Fourteen radioisotopes have been characterized. The most stable are 15O with a half-life of 122.24 seconds and 14O with a half- ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Fourteen radioisotopes have been characterized. The most stable are 15O with a half-life of 122.24 seconds and 14O with a half- ...
Radioisotope. Emission energy (keV). Half-life. Radiopharmaceutical. Activity (MBq). Rotation (degrees). Projections. Image ... or Thallium-201 chloride. Following this, the heart rate is raised to induce myocardial stress, either by exercise on a ... On occasion, the radioisotope is a simple soluble dissolved ion, such as an isotope of gallium(III). Most of the time, though, ... SPECT is more widely available, because the radioisotope used is longer-lasting and far less expensive in SPECT, and the gamma ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Twenty-eight radioisotopes have been characterized, the most stable being 105Ag with a half-life of 41.29 days, 111Ag with a ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... 19 radioisotopes have been characterized, with the most stable being 50Cr with a half-life of (more than) 1.8×1017 years, and ...
Daughter products of uranium-232: bismuth-212, thallium-208.[86]. At present, reprocessing and the use of plutonium as reactor ... uranium and thorium radioisotopes naturally found in coal and concentrated in heavy/bottom coal ash and airborne fly ash.[103] ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... is also sometimes considered as a light radioisotope of hydrogen, due to the mass difference between the antimuon and the ... Downs, A. J.; Pulham, C. R. (1994). "The hydrides of aluminium, gallium, indium, and thallium: a re-evaluation". Chemical ...
Twenty-four neptunium radioisotopes have been characterized, with the most stable being 237. Np. with a half-life of 2.14 ... decays via the neptunium series, which terminates with thallium-205, which is stable, unlike most other actinides, which decay ... Uranium-237 and neptunium-239 are regarded as the leading hazardous radioisotopes in the first hour-to-week period following ... this product being useful as an thermal energy source in a radio-isotope thermoelectric generator for the production of ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... The longest-lived radioisotopes are thulium-171, which has a half-life of 1.92 years, and thulium-170, which has a half-life of ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... allowing the use of radioisotope rubidium-82 in nuclear medicine to locate and image brain tumors.[50] Rubidium-82 has a very ...
Thallium. Lead. Bismuth. Polonium. Astatine. Radon. Francium. Radium. Actinium. Thorium. Protactinium. Uranium. Neptunium. ... The most stable radioisotopes are 107Pd with a half-life of 6.5 million years (found in nature), 103Pd with 17 days, and 100Pd ... Eighteen other radioisotopes have been characterized with atomic weights ranging from 90.94948(64) u (91Pd) to 122.93426(64) u ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Hg being the most abundant (29.86%). The longest-lived radioisotopes are 194. Hg with a half-life of 444 years, and 203. Hg ... Most of the remaining radioisotopes have half-lives that are less than a day. 199. Hg and 201. Hg are the most often studied ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... The most stable chlorine radioisotope is 36Cl. The primary decay mode of isotopes lighter than 35Cl is electron capture to ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Thirty-six radioisotopes have been characterized, with the heaviest being terbium-171 (with atomic mass of 170.95330(86) u) and ... lightest being terbium-135 (exact mass unknown).[12] The most stable synthetic radioisotopes of terbium are terbium-158, with a ...
There are 7 known radioisotopes from 272Rg to 282Rg. The longest-lived isotope is 282Rg with a half-life of 2.1 minutes, ... Due to the weakness of the thallium target, they were unable to detect any atoms of 274Rg.[15] ...
Thallium Leid (element) Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium ... K are foond in aw potassium, an it is the maist common radioisotope in the human bouk. ...
The ending isotope of this chain is now known to be thallium-205. Some older sources give the final isotope as bismuth-209, but ... It is also known as a "radioactive cascade". Most radioisotopes do not decay directly to a stable state, but rather undergo a ... The intermediate stages each emit the same amount of radioactivity as the original radioisotope (i.e. there is a one-to-one ... The total energy released from californium-249 to thallium-205, including the energy lost to neutrinos, is 66.8 MeV. ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... About 20 radioisotopes and 7 nuclear isomers between 233Cm and 252Cm are known for curium, and no stable isotopes. The longest ... They predominantly emit α-particles, and the heat released in this process can serve as a heat source in radioisotope ... A more promising application of 242Cm is to produce 238Pu, a more suitable radioisotope for thermoelectric generators such as ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Therefore, 210Po is used as an atomic heat source to power radioisotope thermoelectric generators via thermoelectric materials. ... thallium, lead, and bismuth. Due to the short half-life of all its isotopes, its natural occurrence is limited to tiny traces ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Zn, which has a half-life of 243.66 days, is the least active radioisotope, followed by 72. Zn with a half-life of 46.5 hours.[ ... The most common decay mode of a radioisotope of zinc with a mass number lower than 66 is electron capture. The decay product ... The most common decay mode of a radioisotope of zinc with mass number higher than 66 is beta decay (β−), which produces an ...
... relates to an universal method for the large scale production of high-purity carrier free or non carrier added radioisotopes by ... B. Halogens, Mercury, Thallium. {units 1 and 2 as in A}. The halogens and mercury are relatively volatile and are released { ... The radioisotopes produced by the method of the present invention are preferably used for producing radioisotope-labelled ... The radioisotopes produced by the inventive method are especially suitable for producing radioisotope-labelled bioconjugates as ...
Thallium Radioisotopes*. Substance. *Thallium Radioisotopes. LinkOut - more resources. Full Text Sources. *Ediciones Doyma, S.L ...
Thallium Radioisotopes. *Tomography, Emission-Computed, Single-Photon/standards*. Substance. *Thallium Radioisotopes. LinkOut ... By knowing the thallium results of patients with and without catheterization, we were able to correct for work-up bias. These ... The importance of work-up (verification) bias correction in assessing the accuracy of SPECT thallium-201 testing for the ... From a computerized data base, reports of 4354 stress SPECT thallium studies from January 1, 1986 through December 31, 1992 ...
The radioisotope thallium-201 (as the soluble chloride TlCl) is used in small, nontoxic amounts as an agent in a nuclear ... Thallium stress test[edit]. A thallium stress test is a form of scintigraphy, where the amount of thallium in tissues ... See also: Category:Thallium compounds.. Thallium(III)[edit]. Thallium(III) compounds resemble the corresponding aluminium(III) ... and thallium(III). Thallium(III) oxide, Tl2O3, is a black solid which decomposes above 800 °C, forming the thallium(I) oxide ...
RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SH-PROTEINASES; THALLIUM ISOTOPES; TOMOGRAPHY; TRANSFERASES; VASCULAR DISEASES; ... THALLIUM 201; THROMBOSIS; UROKINASE; AMINO ACIDS; ARTERIES; BETA DECAY RADIOISOTOPES; BLOOD VESSELS; BODY; CARBOXYLIC ACIDS; ... ELECTRON CAPTURE RADIOISOTOPES; EMISSION COMPUTED TOMOGRAPHY; ENZYMES; FIBRINOLYTIC AGENTS; FUNCTIONS; HEART; HEAVY NUCLEI; ... CARDIOVASCULAR DISEASES; CARDIOVASCULAR SYSTEM; COMPUTERIZED TOMOGRAPHY; DAYS LIVING RADIOISOTOPES; DIAGNOSTIC TECHNIQUES; ...
RADIOISOTOPE SCANNING; RADIOISOTOPES; RESPIRATORY SYSTEM; SECONDS LIVING RADIOISOTOPES; THALLIUM ISOTOPES; USES 550601* -- ... BETA DECAY RADIOISOTOPES; BLOOD VESSELS; BODY; CARDIOVASCULAR SYSTEM; COUNTING TECHNIQUES; DAYS LIVING RADIOISOTOPES; ... 62 RADIOLOGY AND NUCLEAR MEDICINE; CARDIOVASCULAR DISEASES; DIAGNOSIS; CORONARIES; SCINTISCANNING; HEART; THALLIUM 201; ... DIAGNOSTIC TECHNIQUES; DIAGRAMS; DISEASES; ELECTRON CAPTURE RADIOISOTOPES; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES ...
One hundred eight-three men underwent stress-redistribution thallium-201 myocardial perfusion tomography. After evaluation of ... One hundred eight-three men underwent stress-redistribution thallium-201 myocardial perfusion tomography. After evaluation of ... An optimized quantitative method for interpretation of stress thallium-201 myocardial perfusion tomography has been developed. ... Quantitative single photon emission computed thallium-201 tomography for detection and localization of coronary artery disease ...
Fluorine-18 fluorodeoxyglucose/thallium-201 SPECT was superior to the other techniques in assessing functional recovery. ... Thallium Radioisotopes * Tissue Survival * Tomography, Emission-Computed, Single-Photon* Substances * Fluorine Radioisotopes ... Results: The sensitivities for F-18 fluorodeoxyglucose/thallium-201, thallium-201 reinjection and low dose dobutamine ... Comparison of fluorine-18 fluorodeoxyglucose/thallium-201 SPECT, thallium-201 stress-reinjection SPECT and dobutamine ...
Thallium-201 (201Tl) redistribution scintigraphy might differentiate reversibly from nonreversibly asynergic myocardial ... 0/Radioisotopes; 7440-28-0/Thallium From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine ... Use of thallium-201 redistribution scintigraphy in the preoperative differentiation of reversible and nonreversible myocardial ... Thallium-201 redistribution scintigraphy was highly predictive of the pattern of postoperative asynergy: The redistribution ...
0/Thallium Radioisotopes Comments/Corrections. From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine ... CONCLUSIONS: Preoperative stress-thallium testing confirmed a high incidence of significant coronary artery disease in patients ... METHODS: Preoperative stress-thallium scanning was evaluated prospectively in 146 patients undergoing aortic reconstruction. ... Thus, the risk and expense of routine stress-thallium testing and subsequent cardiac revascularization cannot be justified.. ...
Thallium Radioisotopes. 2. 1993. 159. 0.070. Why? Recombinant Fusion Proteins. 1. 2012. 4018. 0.070. Why? ...
Tens of millions of nuclear medicine procedures are performed each year, and demand for radioisotopes is increasing rapidly ... the use of radioisotopes for diagnostics, radiation therapy, radiopharmaceuticals and other beneficial medical uses of nuclear ... Thallium-201 (73 h):. Used for diagnosis of coronary artery disease other heart conditions such as heart muscle death and for ... The global radioisotope market was valued at $9.6 billion in 2016, with medical radioisotopes accounting for about 80% of this ...
Radioisotopes; The catalytic metals; The electronic metals; Germanium; Tantalum; Caesium; Barium, beryllium, thallium and the ...
Newer radioisotopes produced this way for medical applications include thallium-201 and iodine-123. ... Radioisotopes have become increasingly more important in many fields in the past 60 years or so. Some radioisotopes are ... Over one thousand radioisotopes-radioactive isotopes-either exist in nature or have been made artificially by bombarding stable ... A radioisotope is substituted for the stable form of a chemical that is normally used by a specific organ. Examples of widely ...
5.1.1.1 SPECT Radioisotopes. 5.1.1.1.1 Technetium-99m (TC-99m). 5.1.1.1.2 Thallium-201 (TL-201). 5.1.1.1.3 Iodine (I-123). 5.1. ... 28: South Africa Nuclear Imaging Market- By Diagnostic Technologies-SPECT Radioisotopes-Thallium-201 (TL-201)-($ million)(2014- ... 5: African Nuclear Imaging Market- By Diagnostic Technologies-SPECT Radioisotopes-Thallium-201 (TL-201)-($ million)(2014-2020). ... 51: Egypt Nuclear Imaging Market- By Diagnostic Technologies-SPECT Radioisotopes-Thallium-201 (TL-201)-($ million)(2014-2020). ...
... involving the use of thallium-201, a radioisotope. The radioisotope is administered intravenously and localizes, like calcium, ... This is a scintillation scan (gamma camera or photoscan) involving the use of thallium-201, a radioisotope. ... Which type of test will you be recommending? Exercise and thallium injection verses drug dilation of blood vessels and thallium ... A common tracer used for perfusion scans is radioactive thallium; the term thallium scan is therefore often used synonymously ...
Prussian blue/radiogardase a chelation agent to treat radio-Cesium and thallium consumption, one of three the FDA ... Activated protein C. Chelation therapy a countermeasure for treating internal radio-isotope contamination. DPTA a chelation ...
Doctors carried out a scan using a radioisotope of the element thallium. Two days after the scan the patient travelled to ...
used in radioisotope thermoelectric generators (RTGs) and radioisotope heater units as an energy source for spacecraft ... Thallium-204 17057 TBq/kg (461 Ci/g) 3.78 years 763.4 Carbon-14 166.5 TBq/kg (4.5 Ci/g) 5730 years 49.5 (average) ... "Radioisotopes in Industry". World Nuclear Association.. *. Martin, James (2006). Physics for Radiation Protection: A Handbook. ... most commonly used medical radioisotope, used as a radioactive tracer Iodine-129 53. 76. 15,700,000 y. β−. 194 Cosmogenic. ...
鉈(拼音:tā,注音:ㄊㄚ;英语:thallium)是化學元素,符號為Tl,原子序為81,是質軟的灰色貧金屬,在自然界並不以單質存在。鉈金屬外表和錫相似,但會在空氣中失去光澤。兩位化學家威廉·克魯克斯和克洛德-奧古斯特·拉米在1861年獨立發現了這一元素 ... Manual for reactor produced radioisotopes (PDF). International Atomic Energy Agency. 2003 [2010-05-13].. ... 1861年,威廉
The radioisotope 204Tl has the longest half-life-estimated at 3.78 years. ... For instance, thallium is used in certain semiconductor materials and gamma ray detectors. Thallium oxide has been used to ... Crystals of thallium bromide-iodide have been used as infrared optical materials. Some thallium compounds were used in the past ... A heavy layer of oxide builds up on thallium if left in air. In the presence of water, thallium hydroxide is formed. To ...
Several types of radioisotope examination are used to detect heart disease. A radioisotope imaging agent is injected into the ... Thallium 201 has an affinity for heart tissue; when injected intravenously, it is carried to areas with adequate perfusion. ... Myocardial infarcts and areas of acute ischemia or scarring appear as "cold spots" (areas of no uptake of thallium) on the ... Images of the first pass of the radioisotope through the heart can be used to determine the cardiac output and ejection ...
Another important field of application is the use of radioisotopes in medicine for scintigraphy and the diagnosis of melanoma. ... The most recent (1980s) concentrations of thallium observed were , 22 g thallium/m3 (in the production of a special thallium ... Thallium and thallium compounds: health and safety guide. (Health and safety guide ; no. 102) 1.Thallium - toxicity I.Series ... Thallium is also secreted in saliva. As with many other substances, the excretion of thallium in humans differs from that in ...
Some use thallium, and such tests cost about $750. Presumably, Mr. Fixxs results would have been abnormal. Because of the ... However, if the exercise stress results were abnormal, many doctors would have ordered tests that rely on radio-isotopes to ...
Its given three times a day and it is specific for cesium and thallium. What it does is bonds cesium and thallium and keeps ... This bonds plutonium, americium and curium and keeps those radioisotopes from being absorbed and increases their rate of ... them from being absorbed, and increases the rate of elimination of these radioisotopes from your body. ...
The method according to claim 69, wherein the cytotoxic or detectable moiety comprises or consists of a radioisotope. 71. The ... thallium-201. 75. The method according to claim 65, wherein the antibody induces antibody-dependent cell-mediated cytotoxicity ... For example, the detectable moiety may comprise or consist of a radioisotope, such as technitium-99m, indium-111, gallium-67, ... The method according to claim 70, wherein the radioisotope is selected from the group consisting of technitium-99m; indium-111 ...
207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes. Thallium-202 (half- ... Thallium (81Tl) has 41 isotopes with atomic masses that range from 176 to 216. 203Tl and 205Tl are the only stable isotopes and ... "Thallium Research". doe.gov. Department of Energy. Archived from the original on 2006-12-09. Retrieved 23 March 2018. Manual ... life 12.23 days) can be made in a cyclotron while thallium-204 (half-life 3.78 years) is made by the neutron activation of ...
The radioisotopes that are usually used in SPECT include iodine-123, technetium-99, thallium-201, xenon-133 and fluorine-18. ... These radioisotopes are combined with other natural chemicals like glucose or water to be injected into the body. They travel ...
... stress electrocardiography with Thallium perfusion scanning and gated radioisotope left ventricular angiocardiograms. ...
  • One hundred eight-three men underwent stress-redistribution thallium-201 myocardial perfusion tomography. (nih.gov)
  • An optimized quantitative method for interpretation of stress thallium-201 myocardial perfusion tomography has been developed. (nih.gov)
  • Myocardial F-18 fluorodeoxyglucose uptake (during hyperinsulinemic glucose clamping) was compared with rest perfusion assessed with early thallium-201 SPECT. (nih.gov)
  • the term 'thallium scan' is therefore often used synonymously with 'perfusion scan. (healthcentral.com)
  • Sixteen acromegalic patients underwent echocardiography, phonocardiography, stress electrocardiography with Thallium perfusion scanning and gated radioisotope left ventricular angiocardiograms. (ahajournals.org)
  • Bailey IK, Griffith SC, Strauss HW, Pitt B (1976) Detection of coronary artery disease and myocardial ischemia by electrocardiography and myocardial perfusion scanning with Thallium-201. (springer.com)
  • The thallium 201 myocardial perfusion study showed no change after three months of permanent pacing. (bmj.com)
  • The radioisotopes that are usually used in SPECT include iodine-123, technetium-99, thallium-201, xenon-133 and fluorine-18. (medindia.net)
  • The most common radioisotopes used in SPECT scanning that label the tracer chemicals are iodine 123, xenon 133, fluorine 18 and thallium 201. (amenclinics.com)
  • The radioisotopes typically used in SPECT to label tracers are iodine-123, technetium-99m, xenon-133, thallium-201, and fluorine-18. (mayfieldclinic.com)
  • A radionuclide ( radioactive nuclide , radioisotope or radioactive isotope ) is an atom that has excess nuclear energy, making it unstable. (wikipedia.org)
  • It is an object of this invention to prepare radioactive particles consisting of carbonaceous matrices having firmly bound radioisotopes dispersed therein. (google.com)
  • In veterinary medicine, the most commonly used isotope is metastable technetium-99 ( 99m Tc), although radioactive iodine, indium, and thallium are also used in specific instances. (merckvetmanual.com)
  • Nuclear imaging of the heart uses small, safe doses of radioactive substances (called radioisotopes, radionuclides or tracers), which are injected into the bloodstream, usually as part of a stress test. (gfclinic.com)
  • As per the scope of the report, medical radioisotopes are defined as safe radioactive substances that are primarily used in the diagnosis of medical conditions. (mordorintelligence.com)
  • Since last May, clinicians have rescheduled procedures as much as possible and many facilities have started using a radioactive variant of thallium, which went out of favor about 15 years ago because technetium-99m has better imaging characteristics, Atcher told MedPage Today . (medpagetoday.com)
  • Doctors carried out a scan using a radioisotope of the element thallium. (medgadget.com)
  • The element thallium is reasonably abundant in the Earth 's crust, at a concentration estimated to be about 0.7 milligrams per kilogram (mg/kg). (newworldencyclopedia.org)
  • Use of thallium-201 redistribution scintigraphy in the preoperative differentiation of reversible and nonreversible myocardial asynergy. (biomedsearch.com)
  • Thallium-201 (201Tl) redistribution scintigraphy might differentiate reversibly from nonreversibly asynergic myocardial segments and thus predict the response of these segments to coronary artery bypass grafting (CABG). (biomedsearch.com)
  • Thallium-201 redistribution scintigraphy was highly predictive of the pattern of postoperative asynergy: The redistribution pattern was normal in 90% of segments with reversible asynergy and abnormal in 76% of segments with nonreversible asynergy. (biomedsearch.com)
  • Hoefnagel C.A., Delprat C.C., Marcuse H.R., de Vijlder J. Role of thallium-201 total-body scintigraphy in follow-up of thyroid carcinoma. (rusmedserv.com)
  • Ramanna L., Waxman A., Braunstein G. Thallium-201 scintigraphy in differentiated thyroid cancer: comparison with radioiodine scintigraphy and serum thyroglobulin determinations. (rusmedserv.com)
  • Follow-up study of postoperative patients with thyroid cancer by thallium-201 scintigraphy and serum thyroglobulin measurement. (rusmedserv.com)
  • Our experience with first 25 cases of Thallium Scintigraphy is presented. (who.int)
  • Methods and Results: A multicenter, open-label trial was performed during which treadmill exercise thallium and tetrofosmin scintigraphy was performed within a 2-week period of each other in 216 subjects. (elsevier.com)
  • 99m Tc-labeled tetrofosmin scintigraphy yields images of improved quality compared with thallium, and there is an overall improvement in the consistency of image analysis associated with the use of tetrofosmin. (elsevier.com)
  • However, the +1 state, which is far more prominent in thallium than the elements above it, recalls the chemistry of alkali metals , and thallium(I) ions are found geologically mostly in potassium-based ores, and (when ingested) are handled in many ways like potassium ions (K + ) by ion pumps in living cells. (wikipedia.org)
  • Like the alkali metals, thallium is concentrated in the upper part of the earth's crust, the granite layer, where its average content is 1.5 × 10 -4 percent. (thefreedictionary.com)
  • Thallium is malleable and sectile enough to be cut with a knife at room temperature. (wikipedia.org)
  • Thallium (chemical symbol Tl , atomic number 81) is a soft, malleable metal . (newworldencyclopedia.org)
  • Thallium is very soft and malleable and can be cut with a knife. (newworldencyclopedia.org)
  • 1.2 Physical and Chemical Properties Thallium is a soft and malleable heavy metal with a bluish-white colour. (inchem.org)
  • Thallium is a soft, malleable, lustrous silver-gray metal with a hexagonal close-packed crystalline structure. (thefreedictionary.com)
  • Thallium is a malleable metal and looks like Lead (Atomic Number 82) in appearance. (vedantu.com)
  • To obtain more accurate measurements of sensitivity and specificity, we determined the observed sensitivity and specificity of stress (exercise and dipyridamole) single photon emission computed tomographic (SPECT) thallium testing for the detection of coronary artery disease by angiography, and then applied previously published equations to correct for work-up bias. (nih.gov)
  • Recently, fluorine-18 (F-18) fluorodeoxyglucose in combination with single-photon emission computed tomography (SPECT) has been proposed to identify viable myocardium, Thallium-201 reinjection and low dose dobutamine echocardiography are used routinely for this purpose. (nih.gov)
  • Thallium(III) compounds resemble the corresponding aluminium(III) compounds. (wikipedia.org)
  • Despite their toxicity, thallium and its compounds serve many useful purposes. (newworldencyclopedia.org)
  • Some thallium compounds were used in the past as rat poisons and insecticides, but those uses have been discontinued in many countries, based on safety concerns. (newworldencyclopedia.org)
  • WHO Library Cataloguing in Publication Data Thallium and thallium compounds: health and safety guide. (inchem.org)
  • PRODUCT IDENTITY AND USES 1.1 Identity The chemical names, chemical formula and CAS numbers of thallium and of some thallium compounds are given in Table 1. (inchem.org)
  • Thallium is used in low-melting alloys with other metals and in compounds. (thefreedictionary.com)
  • Unstable isotopes of thallium that decay or disintegrate emitting radiation. (bvsalud.org)
  • no. 102) 1.Thallium - toxicity I.Series ISBN 92 4 151102 8 (NLM Classification: QV 618) ISSN 0259-7268 The World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full. (inchem.org)
  • Diagnostic procedures using radioisotopes are now routine. (world-nuclear.org)
  • In developed countries (a quarter of the world population) about one person in 50 uses diagnostic nuclear medicine each year, and the frequency of therapy with radioisotopes is about one-tenth of this. (world-nuclear.org)
  • The most common radioisotope used in diagnosis is technetium-99 (Tc-99), with some 40 million procedures per year, accounting for about 80% of all nuclear medicine procedures and 85% of diagnostic scans in nuclear medicine worldwide. (world-nuclear.org)
  • Radioisotopes are an essential part of medical diagnostic procedures. (world-nuclear.org)
  • Diagnostic nuclear medicine imaging involves dosing the patient with a very small amount of a gamma ray-emitting radioisotope. (merckvetmanual.com)
  • Tc-99m and F-18 radioisotopes are estimated to contribute the highest to the European nuclear medicine diagnostic market in 2015, whereas Ra-223, I-131 and Y-90 ensured their leading position in the therapeutic market. (marketsandmarkets.com)
  • Nuclear medicine comprises diagnostic and therapeutic techniques that use radioisotopes for applications like oncology, cardiovascular and neurological disorders to provide information at both molecular and cellular level for probing, tracking tissue function, study disease progression and assessing treatment responses. (marketresearch.com)
  • However, most studies to date have demonstrated only similarity in the diagnostic accuracy between technetium agents and thallium. (elsevier.com)
  • By radioisotope, the Technetium-99 segment is expected to grow at a significant market share during the forecast period owing to its easy availability and extensive diagnostic applications. (mdata.jp)
  • Today, radioisotope tracers are a fundamental tool of biology. (lbl.gov)
  • Radionuclides used for cardiac imaging include technetium (Cardiolite®, Myoview®) - the most commonly used - as well as thallium tracers. (gfclinic.com)
  • These enriched stable isotopes are used as target materials in the preparation of radioisotopes with particle accelerators and nuclear reactors and as biological tracers in biomedical research and clinical applications. (nap.edu)
  • The image shows the uptake of a radio-isotope, Thallium-201, by the heart's muscle cells. (sciencephoto.com)
  • The examination is performed by injecting the radio-isotope Thallium 201 and following its absorption in various areas of the Myocardium. (shl-telemedicine.com)
  • In recent years specialists have also come from radiology, as dual PET/CT (positron emission tomography with computerised tomography) procedures have become established, increasing the role of accelerators in radioisotope production. (world-nuclear.org)
  • SUMMARY BACKGROUND DATA: Stress-thallium scanning can identify patients with ischemic myocardium. (biomedsearch.com)
  • The radioisotope is administered intravenously and localizes, like calcium, in the myocardium (heart muscle). (healthcentral.com)
  • With a pair of these devices, dynamic studies of the myocardial kinetics of radioisotopes such as thallium-201 in normal and ischemic myocardium are now possible. (elsevier.com)
  • Thallium is found in the minerals crookesite (TlCu 7 Se 4 ), hutchinsonite (TlPbAs 5 S 9 ), and lorandite (TlAsS 2 ). (newworldencyclopedia.org)
  • The European radiopharmaceuticals market is witnessing growth owing to an increasing number of radioisotope approvals for different clinical indications. (marketsandmarkets.com)
  • Moreover, potential radioisotopes in the pipeline, cyclotron based production are likely to create huge opportunities for European Nuclear Medicine/Radiopharmaceuticals market in the coming years. (marketsandmarkets.com)
  • Increased radioisotopes applications, rise in public awareness, use of SPECT/CT and PET/CT imaging scans, abundance of radiopharmaceuticals, advancement in imaging technology (hybrid imaging) and alpha therapy based targeted cancer treatment is boosting nuclear medicine market growth. (marketresearch.com)
  • Pharmaceutical formulations that contain radioisotopes are known as radiopharmaceuticals. (mdata.jp)
  • These data provide better estimate of the sensitivity and specificity of stress SPECT thallium testing. (nih.gov)
  • Is there any possibility of a reaction or sensitivity to thallium? (healthcentral.com)
  • 71. The method according to claim 70, wherein the radioisotope is selected from the group consisting of astatine-211, bismuth-212, bismuth-213, iodine-131, yttrium-90, lutetium-177, samarium-153 and palladium-109. (freepatentsonline.com)
  • For ruthemium-106/rhodium-106, strontium-90/yttrium-90, thallium-204 and promethium-147 two types of source constructions were studied, the sources produced by the Amersham Company with the radionuclides encapsulated in silver and another type of sources (OMH type) produced at the Hungarian Institute of Isotopes (HII) with backing materials of PMMA and only covered with thin foils of aluminised mylar and therefore expected to produce minimal bremsstrahlung. (europa.eu)
  • The radioisotope thallium-201 (as the soluble chloride TlCl) is used in small, nontoxic amounts as an agent in a nuclear medicine scan, during one type of nuclear cardiac stress test . (wikipedia.org)
  • Sulfuric and nitric acids dissolve thallium rapidly to make the sulfate and nitrate salts, while hydrochloric acid forms an insoluble thallium(I) chloride layer. (wikipedia.org)
  • Comparison of the tumor accumulation of Ga-67 citrate and thallium-201 chloride in vitro. (rusmedserv.com)
  • This leads to origination of these dihalides - thallium fluoride, thallium chloride and thallium bromide. (vedantu.com)
  • The role of iodine-131 and thallium-201 imaging and serum thyroglobulin in the management of differentiated thyroid carcinoma. (rusmedserv.com)
  • Iodine-131 was the beginning of the Lab's ongoing role in the discovery and use of radioisotopes. (lbl.gov)
  • In the periodic table , thallium lies in group 13 (former group 3A), which is the same group as aluminum , gallium , and indium . (newworldencyclopedia.org)
  • Accordingly, thallium(I) oxide and hydroxide are more basic and thallium(III) oxide and hydroxide are more acidic, showing that thallium conforms to the general rule of elements being more electropositive in their lower oxidation states. (wikipedia.org)
  • In the presence of water, thallium hydroxide is formed. (wikipedia.org)
  • Thallium does not get precipitated by sulfate ions and TI(l) is not precipitated by hydroxide ions. (vedantu.com)
  • Since Thallium is extremely poisonous, it dissolves at a slow speed in only sulphuric acid given as H2SO4 and Hydrochloric Acid given as Hcl. (vedantu.com)
  • From this total, 471 patients underwent coronary angiography within 90 days following stress SPECT thallium testing. (nih.gov)
  • A heavy layer of oxide builds up on thallium if left in air. (wikipedia.org)
  • Thallium oxide has been used to manufacture glasses that have a high refractive index, its sulfide is useful in photocells, and its amalgam ( alloy with mercury ) is used in thermometers for low-temperature measurements. (newworldencyclopedia.org)
  • Thallium reacts with air to create a grey oxide film and when it is heated to enormous amounts it leads to creation of poisonous thallium oxide. (vedantu.com)
  • Does routine stress-thallium cardiac scanning reduce postoperative cardiac complications? (biomedsearch.com)
  • Postoperative cardiac complications and long-term survival in these patients were compared with results from 172 similar patients undergoing aortic reconstruction without stress-thallium scanning. (biomedsearch.com)
  • RESULTS: Forty-one per cent of patients undergoing stress-thallium testing underwent coronary arteriography, and 11.6% had cardiac revascularization. (biomedsearch.com)
  • Only advanced age and intraoperative complications (but not a positive stress-thallium test) predicted postoperative cardiac events. (biomedsearch.com)
  • CONCLUSIONS: Preoperative stress-thallium testing confirmed a high incidence of significant coronary artery disease in patients undergoing aortic reconstruction, but prophylactic cardiac intervention does not reduce operative or long-term mortality. (biomedsearch.com)
  • Thus, the risk and expense of routine stress-thallium testing and subsequent cardiac revascularization cannot be justified. (biomedsearch.com)
  • It is the most popular isotope used for thallium nuclear cardiac stress tests. (wikipedia.org)
  • Increasing cases of cancer and cardiac ailments are the major drivers for the nuclear medicine radioisotopes market. (mordorintelligence.com)
  • In addition to the eight toxic metals-arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver-analytes included the underlying hazardous constituents (UHC) antimony, beryllium, nickel, and thallium which could not be eliminated from analysis by process knowledge. (unt.edu)
  • Thallium is a chemical element having symbol TI with an atomic number of 81, as found in the periodic table. (vedantu.com)
  • Thallium has a +3 and +1 oxidation state. (vedantu.com)
  • Its most important compound is the colourless odourless and tasteless thallium(I) sulfate, previously used on a large scale as a rodenticide. (inchem.org)
  • It has been proposed heretofore to incorporate radioisotopes into the structure of synthetic resins, and articles containing tritium or carbon 14 incorporated into the structure of synthetic resins or plastics have been produced. (google.com)
  • Thallium is a chemical element with symbol Tl and atomic number 81. (wikipedia.org)
  • Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. (wikipedia.org)
  • In 1862 the French chemist C. A. Lamy isolated thallium and determined its metallic nature. (thefreedictionary.com)
  • SPECT is segmented based on isotopes into Technetium (Tc-99m), Thallium (Tl-201), Gallium (Ga-67), Iodine (I-123), Samarium (Sm-153), Yttrium (Y-90), Rhenium (Re-186) and others. (marketresearch.com)
  • Thallium tends to oxidize to the +3 and +1 oxidation states as ionic salts. (wikipedia.org)
  • Soluble thallium salts (many of which are nearly tasteless) are toxic , and they were historically used in rat poisons and insecticides . (wikipedia.org)
  • When isolated, thallium resembles tin , but discolors when exposed to air. (wikipedia.org)
  • Commercially, thallium is produced not from potassium ores, but as a byproduct from refining of heavy-metal sulfide ores. (wikipedia.org)
  • The major source of commercial thallium is the trace amounts found in the sulfide ores of copper , lead , zinc , and other metals. (newworldencyclopedia.org)
  • Thallium (from the Greek word τάλλός , meaning "a green shoot or twig") was discovered by Sir William Crookes in 1861 in England while he was making spectroscopic determinations for tellurium on residues from a sulfuric acid plant. (newworldencyclopedia.org)
  • For the 471 patients who underwent catheterization within 90 days following stress SPECT thallium testing. (nih.gov)
  • By knowing the thallium results of patients with and without catheterization, we were able to correct for work-up bias. (nih.gov)
  • and thallium-201 reinjection identified 6 of 11 patients without improvement. (nih.gov)
  • METHODS: Preoperative stress-thallium scanning was evaluated prospectively in 146 patients undergoing aortic reconstruction. (biomedsearch.com)
  • A SPECT thallium 201 myocardial study was done during the same week as the 123 I-MIBG study in all patients. (bmj.com)
  • Chacko said that due to its lower radiation dose compared to an alternative radioisotope, thallium, she preferred that VA physicians work around technetium supply shortages to ensure that patients were scheduled when the radioisotope could still be used. (blogspot.com)
  • Other reactor-produced radioisotopes continue to play a major role in research, and recent advances in many fields (such as molecular biology, including the Human Genome Project) could not have been accomplished without the use of 32 P. In addition, many of the isotopes useful for therapeutic applications, such as strontium-89 for the palliation of metastatic bone pain, are produced in reactors. (nap.edu)
  • Since bond energies decrease down the group, with thallium, the energy released in forming two additional bonds and attaining the +3 state is not always enough to outweigh the energy needed to involve the 6s-electrons. (wikipedia.org)
  • The importance of work-up (verification) bias correction in assessing the accuracy of SPECT thallium-201 testing for the diagnosis of coronary arte. (nih.gov)
  • There is widespread awareness of the use of radiation and radioisotopes in medicine, particularly for diagnosis (identification) and therapy (treatment) of various medical conditions. (world-nuclear.org)
  • Over 10,000 hospitals worldwide use radioisotopes in medicine, and about 90% of the procedures are for diagnosis. (world-nuclear.org)
  • These radioisotopes, used in a diagnosis, emit gamma rays of energy that are sufficient to escape from the body. (mordorintelligence.com)
  • Exercise and thallium injection verses drug dilation of blood vessels and thallium injection? (healthcentral.com)
  • Manganese nodules, which are found on the ocean floor, also contain thallium, but nodule extraction is prohibitively expensive and potentially damaging for the environment. (newworldencyclopedia.org)
  • Ocean floors have manganese nodules, and a small amount of Thallium has been discovered in them as well. (vedantu.com)
  • This is a scintillation scan (gamma camera or photoscan) involving the use of thallium-201, a radioisotope. (healthcentral.com)
  • Are there any tests that should be performed before a thallium scan? (healthcentral.com)
  • From this relatively small study it is concluded that Thallium Scan is of particular use in the cases with the resting EGG abnormalities like Bundle Branch Blocks or ST, T changes where interpretation of exercise test becomes difficult. (who.int)
  • Thallium-202 (half-life 12.23 days) can be made in a cyclotron while thallium-204 (half-life 3.78 years) is made by the neutron activation of stable thallium in a nuclear reactor. (wikipedia.org)
  • Manual for reactor produced radioisotopes from the International Atomic Energy Agency "Bound-state beta decay of highly ionized atoms" (PDF). (wikipedia.org)
  • Over 40 million nuclear medicine procedures are performed each year, and demand for radioisotopes is increasing at up to 5% annually. (world-nuclear.org)
  • But Chacko said she found cases in which orders made by nuclear medicine physicians for technetium studies were changed without their knowledge to use thallium instead. (blogspot.com)
  • Growth of medical imaging is an opportunity for the growth of the nuclear medicine radioisotope market, as both markets are correlated. (mordorintelligence.com)
  • North America captured the largest market share in the nuclear medicine radioisotopes market. (mordorintelligence.com)
  • The Global Nuclear Medicine Radioisotopes Market report offers a complete research study that includes accurate estimations of market growth rate and size for the forecast period 2019-2025. (indiancolumnist.com)
  • The all-inclusive market research report also offers Porter's Five Forces Analysis and profiles some of the leading players of the Nuclear Medicine Radioisotopes market . (indiancolumnist.com)
  • Interested parties are provided with market recommendations and business advice to ensure success in the Nuclear Medicine Radioisotopes market. (indiancolumnist.com)
  • The research study comes out as a highly useful tool to gain a deep understanding of various aspects of the Nuclear Medicine Radioisotopes market. (indiancolumnist.com)
  • It provides an in-depth analysis of the Nuclear Medicine Radioisotopes market, taking into account a number of factors such as industry structure, market characteristics, problems faced by players, and their business strategies. (indiancolumnist.com)
  • Explains the growth of the Nuclear Medicine Radioisotopes market in different regions and countries across the world. (indiancolumnist.com)
  • Global Nuclear Medicine Radioisotope Market was valued at USD XX Billion in the year 2017. (genesismarketinsights.com)
  • Global Nuclear Medicine Radioisotope Market is further estimated to grow at a CAGR of XX % from 2018 to reach USD XX Billion by the year 2023. (genesismarketinsights.com)
  • The Nuclear Medicine Radioisotope market is segmented on the basis of a type of radioisotope, application, and region. (genesismarketinsights.com)
  • By type of radioisotope, Technetium-99m (Tc-99m) was the largest type segment of the Nuclear Medicine Radioisotopes market in 2017 and is expected to grow with XX% CAGR in coming years. (genesismarketinsights.com)
  • Cardinal Health (US), GE Healthcare (US), and Curium (France) are the major players in the Global Nuclear Medicine Radioisotope Market. (genesismarketinsights.com)
  • The quiet world of nuclear medicine is about to get a lot quieter -- not for lack of work, but because of a looming shortage of radioisotopes. (medpagetoday.com)
  • There is high competition among the players of the global nuclear medicine radioisotopes market. (sdki.jp)
  • GE Healthcare,NTP Radioisotopes SOC Ltd, Nordion (Canada) Inc., Siemens Healthcare, and Positron Corp. are some of the major players in the nuclear medicine radioisotopes market. (sdki.jp)
  • Thallium has 41 isotopes which have atomic masses that range from 176 to 216. (wikipedia.org)
  • Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes. (bvsalud.org)