thallium 201 1975

Comparative method for actuarial analysis of cardiac valve ...

Thallium-20 1 myocardial perfusion scintigraphy for the clinical clarification of normal, abnormal and equivocal electrocardiographic stress tests. Am J Cardiol. 1978 Jan; 41 (1):43–51. Bradley-Moore PR, Lebowitz E, Greene MW, Atkins HL, Ansari AN. Thallium-201 for medical use. II: Biologic behavior. J Nucl Med. 1975 Feb; 16 (2):156–160.

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Idiopathic Hypertrophic Subaortic Stenosis: Detection by ...

Thus, thallium 201 myocardial perfusion imaging provides a noninvasive method for detection and evaluation of idiopathic hypertrophie subaortic stenosis. (N Engl J Med 293:1113–1116, 1975 ...

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Thallium-201 myocardial imaging in children - ScienceDirect

The clinical applications of thallium-201 scintigraphy are less well defined in children than in adults. However, the published data indicate several potential applications including assessment of: 1) deficit in left ventricular myocardial perfusion, 2) early right ventricular volume or pressure overload, or both, and 3) the right ventricle in both cyanotic and acyanotic congenital heart disease.

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diagnosis Comparison - BMJ

physical half-life (Bradley-Moore et al., 1975). The thallium-201 scan has been reported to be more sensitive than the exercise electrocardiogram in patients with significant coronary artery disease (Bailey et al., 1977; Ritchie et al., 1977a, b; Botvinicketal., 1978).Thepresentstudywasunder-taken (1) to evaluate rest andexercise thallium-201

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Evaluation of thallium-201 production in INER's compact ...

The production of Thallium-201 via the 203 Tl(p,3n) 201 Pb→ 201 Tl process in the compact cyclotron TR30/15 of the Institute of Nuclear Energy Research (INER) was evaluated based on excitation functions. This study involves a selection of a series of parameters including proton energy, target thickness, and irradiation time that will maximize the yield of the product and minimize the ...

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Thallium-2o1 in evaluation of

et al., 1975). Thallium-201 myocardial imaging has recently been shown to be a sensitive method to detect transient myocardial ischaemia (Bailey et al., 1977). Thallium-201 has biological ...

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DESIGNING A RADIOISOTOPE FACILITY - CERN

thallium-201 is shown below; in fact lead-201 is generated first. decay Thallium-203 (p,3n) Lead-201 → Thallium-201 Naturally occurring thallium consists of two main isotopes - thallium-203 (natural abundance 29.5%) and thallium-205 (natural abundance 70.5%); the initial raw material for cyclotron targets is the enriched stable isotope ...

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Noninvasive evaluation of ischaemic heart disease ...

The majority of the 'thallium-201 nonviable segments' did not exhibit contractile reserve. However, an additional 36% of the 'thallium-201 viable segments' also did not exhibit contractile reserve. Thus, the results indicated that thallium-201 imaging was more sensitive than dobutamine echocardiography for the detection of viable tissue.

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,

1975 204 23011 [] Nitrogen trioxide,special permission Nitrous anhydride 1 2421 205 23012 [] Dinitrogen tetroxide,liquefied 1067

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- UpToDate

Strauss HW, Harrison K, Langan JK, et al. Thallium-201 for myocardial imaging. Relation of thallium-201 to regional myocardial perfusion. Circulation 1975; 51:641. Nielsen AP, Morris KG, Murdock R, et al. Linear relationship between the distribution of thallium

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The Significance of Thallium-201-Chloride SPECT …

Regional 201 Tl activity was measured in each myocardial sector, and it was expressed in each patient as a percent of the maximal 201 Tl activity for each set of images. A 201 Tl defect was defined when 201 Tl activity measured <80% of maximal activity. Alignment and analysis of the two studies was visually made by two operators.

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Clinical value of delayed thallium-201 myocardial …

et at., 1975). Theuptakeofthallium-201 indifferent areasofthemyocardiumreflects regoinalmyocardial bloodflow, areas ofdecreased perfusion accumula-ting less thallium-201 and so appearing as 'cold spots'onthemyocardialimage(Strausset al., 1975). Athallium-201 myocardialimageobtainedwithin 6 hours of the onset ofsymptomswill be abnormal

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Basic properties of myocardial perfusion agents - UpToDate

Strauss HW, Harrison K, Langan JK, et al. Thallium-201 for myocardial imaging. Relation of thallium-201 to regional myocardial perfusion. Circulation 1975; 51:641. Nielsen AP, Morris KG, Murdock R, et al. Linear relationship between the distribution of thallium-201 and blood flow in ischemic and nonischemic myocardium during exercise.

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MYOVIEW30mL - Food and Drug Administration

thallium-201 imaging, subjects received thallium-201 55.5-74 MBq (1.5-2.0 mCi) at peak exercise. The images were evaluated for the quality of the image (excellent, good or poor) and the diagnosis (with scores of 0 = normal, 1 = ischemia, 2 = infarct, 3 = mixed infarct and ischemia). The primary outcome variable was the percentage of correct

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- A+

Thallium-201 for medical use. The Journal of Nuclear Medicine. 1975, 16 (2): 151–5. PMID 1110421. ↑ 41.0 41.1 Taylor, George J.. Primary care cardiology. Wiley-Blackwell. 2004: p. 100. ISBN 1-4051-0386-8. ↑ Akinpelu, David. Pharmacologic Stress Testing ...

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Pathophysiology of technetium-99m stannous …

Relation of thallium-201 to regional myocardial perfusion. Circulation. 1975 Apr; 51 (4):641–645. [Google Scholar] Wackers FJ, Schoot JB, Sokole EB, Samson G, Niftrik GJ, Lie KI, Durrer D, Wellens HJ. Noninvasive visualization of acute myocardial infarction in man with thallium-201. Br …

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Thallium toxicity and cruciferous vegetable consumption ...

Thallium is even used as a radioactive contrast agent (thallium-201) to visualize cardiac muscle function. Since 1975, thallium has been considered an environmental pollutant when discharged in ...

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Draft Screening Assessment - Thallium and its compounds ...

Thallium chloride (201 TlCl) ... (1975) discovered that a high thallium concentration (10 mM Tl) may induce potassium deficiency in cucumber seedlings. They also found that thallium is more disruptive to mechanisms associated with cell multiplication than …

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Thallium-201 for Medical Use. I | Journal of Nuclear Medicine

Thallium-201 merits evaluation for myocardial visualization, kidney studies, and tumor diagnosis because of its physical and biologic properties. A method is described for preparation of this radiopharmaceutical for human use. A critical evaluation of 201Tl and other radiopharmaceuticals for myocardial visualization is …

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Radioactive Tracer - an overview | ScienceDirect Topics

Thallium 201: 3–5 μCiWhole-body scan for thyroid cancer, usually when Tg positive and 131 I scan negative: 111–185 MBqHas been used to differentiate malignant from benign nodules: 99m Tc-sestamibi: 20–25 mCiWhole-body scan for thyroid cancer as above: 740–925 MBqHas been used to differentiate malignant from benign nodules: 99m Tc ...

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In vitro proof of concept studies of radiotoxicity from ...

Thallium-201 (201 Tl, t 1/2 = 73 h) is well-known in diagnostic nuclear medicine.By mimicking the biological behavior of potassium, it has played a major role in myocardial perfusion scintigraphy [], until it was largely replaced by 99m Tc labeled complexes [].201 Tl has also been used for tumor imaging [3, 4], to evaluate chemotherapy responses [] and tumor malignancy [6, 7].

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The Utility of Thallium for Myocardial Perfusion Imaging

Since 1975, when thallium-201 (Tl-201) was introduced as the first perfusion radiotracer, radionuclide myocardial perfusion imaging (MPI) has become an essential diagnostic and prognostic test in the management of coronary artery disease (CAD); as a result of this clinical value, the technique has enjoyed widespread acceptance and growth among ...

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Radiation-Absorbed Dose from 201 Tl-Thallous Chloride

Radiation dosimetry for 201 Tl-thallous chloride has been developed by several authors (14,17–20).The International Commission on Radiation Protection (ICRP) dose estimates for 201 Tl chloride have incorporated values of testicular uptake published by Gupta et al. and Hosain and Hosain ().The values for testicular uptake at 24 h reported by these authors for adults (0.8%–1% of the ...

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Thallium-201 for medical use. I. (Journal Article) | OSTI.GOV

The ability of thallium-201 data (redistribution, fixed defects, normal) to predict cardiac events was compared with clinical data (age, gender,more » Thallium-201 redistribution was the only significant predictor of cardiac death or nonfatal myocardial infarction (p less than 0.05).

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R!

Thallium-201 radiopharmaceuticals are widely used in medical practice for early diagnosis of heart diseases. Thallium-201's main characteristics are radionuclide pu­ rity and low chemical contamination content and depend on the complex conditions of the radioactive isotope pro­ duction. At the Institute of Nuclear Physics of the Kaza­ khstan ...

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Pathophysiology of technetium-99m stannous …

Relation of thallium-201 to regional myocardial perfusion. Circulation. 1975 Apr; 51 (4):641–645. Wackers FJ, Schoot JB, Sokole EB, Samson G, Niftrik GJ, Lie KI, Durrer D, Wellens HJ. Noninvasive visualization of acute myocardial infarction in man with thallium-201. Br Heart J. …

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An evaluation of the role of thallium-201 myocardial ...

The potassium analogue thallium-201 became readily available for gamma camera imaging of the myocardium in 1975 and this thesis is concerned with an evaluation of its clinical role in the noninvasive diagnosis of coronary artery disease. Chapter I is a review of the literature published on the application of nuclear medicine techniques (other ...

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dose estimation. MIRD Pamphlet No. 10, P62, 1975. …

thallium-201 imaging, subjects received thallium-201 55.5-74 MBq (1.5-2.0 mCi) at peak exercise. The images were evaluated for the quality of the image (excellent, good or poor) and the diagnosis (with scores of 0 = normal, 1 = ischemia, 2 = infarct, 3 = …

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