thallium myocardial utility
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thallium myocardial utility

Functional imaging of thallium-201 myocardial washout

Functional imaging of thallium-201 myocardial washout and the clinical utility of this method. Watanabe N, Machida K, Nishikawa J, Ohtake T, Iio M, Kawakubo K, Toyama H. In exercise testing with Thallium-201 myocardial scintiscan, we developed a quantitative myocardial Tl-201 washout image, a washout ratio and a washout index to detect ischemic segments.

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The utility and potential cost-effectiveness of stress ...

Objectives: To determine the utility of myocardial perfusion imaging with thallium-201 for predicting outcome of hospitalized patients with chest pain and a normal or non-diagnostic ECG. Methods: On pain cessation, 109 hospitalized patients, age 61 +/- 14 years (mean +/- SD), with chest pain and non-diagnostic ECG underwent stress myocardial perfusion SPECT imaging with thallium-201.

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Serial thallium-201 myocardial imaging after dipyridamole ...

Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion. Leppo J, Boucher CA, Okada RD, Newell JB, Strauss HW, Pohost GM.

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Thallium redistribution: Mechanisms and clinical utility ...

Thallium-201 is widely used as a myocardial imaging agent in conjunction with other clinical studies for the detection of coronary artery disease. Despite its clinical utility, its kinetic behavior in biological tissue is not fully understood. It is known that the initial distribution of thallium

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Thallium redistribution: Mechanisms and clinical utility ...

01-01-1980  Thallium-199 was suggested as a potential myocardial imaging agent by Kawana et al.1 in 1970, and 5 yr later thallium-20l (2°~TI) was introduced by Lebowitz et al.2 Since its introduction, numerous reports have demon- strated the utility of 2°~TI, primarily in evaluat- ing ischemic heart disease)-39 Initial reports demonstrated the ability of 2°~TI imaging in conjunction with exercise

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The utility and potential cost-effectiveness of stress ...

Objectives: To determine the utility of myocardial perfusion imaging with thallium-201 for predicting outcome of hospitalized patients with chest pain and a normal or non-diagnostic ECG. Methods: On pain cessation, 109 hospitalized patients, age 61 +/- 14 years (mean +/- SD), with chest pain and non-diagnostic ECG underwent stress myocardial perfusion SPECT imaging with thallium-201.

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Thallium redistribution: Mechanisms and clinical utility ...

01-01-1980  Thallium-199 was suggested as a potential myocardial imaging agent by Kawana et al.1 in 1970, and 5 yr later thallium-20l (2°~TI) was introduced by Lebowitz et al.2 Since its introduction, numerous reports have demon- strated the utility of 2°~TI, primarily in evaluat- ing ischemic heart disease)-39 Initial reports demonstrated the ability of 2°~TI imaging in conjunction with exercise

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Prognostic utility of predischarge dipyridamole-thallium ...

01-12-1989  Prognostic utility of predischarge dipyridamole-thallium imaging compared to predischarge submaximal exercise electrocardiography and maximal exercise thallium imaging after uncomplicated acute myocardial infarction. Gimple LW(1), Hutter AM Jr, Guiney TE, Boucher CA. Author information: (1)Cardiac Unit, Massachusetts General Hospital, Boston 02114

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Serial thallium-201 myocardial imaging after

Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion Circulation . 1982 Sep;66(3):649-57. doi: 10.1161/01.cir.66.3.649.

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Assessment of Myocardial Viability with Thallium-201

03-02-2015  For example, all myocardial segments with thallium activity greater than 50% of normal were considered viable in the study of Perrone-Filardi et al. 73 However, 56% of segments with thallium activity of 50% to 60% improved after revascularization, whereas 88% of segments with thallium activity greater than 80% showed functional improvement after revascularization (see Fig. 37-7).

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Quantitative exercise thallium-201 rotational tomography ...

The utility of stress-redistribution thallium-201 myocardial perfusion single-photon emission computed tomography (SPECT) in patients with a prior single myocardial infarction was studied in 66 patients who were tested by both SPECT and coronary angiography.

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Serial thallium-201 myocardial imaging after

Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion. J Leppo C A Boucher

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[PDF] The (F)utility of the thallium-201 quantitative lung ...

Exercise-induced increases in pulmonary uptake of thallium-201 (201Tl) have been associated with exercise-induced myocardial dysfunction. To evaluate this phenomenon more replicably, a quantitative semi-automated computer program was used to generate, from anterior exercise and delayed views, lung-myocardial ratios (LMR) of201Tl uptake in 78 patients [40 normal, 38 with coronary artery

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MYOCARDIAL PERFUSION VIABILITY STUDY (Thallium-201)

1. 3-4 hours following the initial injection, an additional dose of thallium is injected at rest, ie. reinjection technique. 2. 5 minutes after the resting injection of thallium, redistribution/rest SPECT images are acquired using the same acquisition parameters that were used

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Assessment of myocardial viability by nuclear imaging in ...

27-02-2020  The myocardial uptake of thallium-201 is a sarcolemmal membrane Na/K ATPase-dependent active process requiring cell membrane integrity, and is therefore indicative of myocardial viability. Thallium-201 uptake by myocytes is also a reflection of regional perfusion (required for delivery of tracer to the myocyte) and viability.

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Thallium-201 scintigraphy in the diagnosis and

We have described three patients with clinical evidence of myocardial sarcoidosis to illustrate the utility of thallium-201 scintigraphy in demonstrating the myocardial lesions. Both the symptomatic and asymptomatic individuals studied showed the characteristic "reverse redistribution" phenomenon.

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Serial thallium-201 myocardial imaging after

Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion Circulation . 1982 Sep;66(3):649-57. doi: 10.1161/01.cir.66.3.649.

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(PDF) The (F)utility of the thallium-201 quantitative lung ...

The (F)utility of the thallium-201 quantitative lung/myocardial ratio in the detection of coronary artery disease August 1986 European Journal of Nuclear Medicine and Molecular Imaging 12(1):5-8

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Serial thallium-201 myocardial imaging after

Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion. J Leppo C A Boucher

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Thallium-201 myocardial perfusion imaging in aortic valve ...

The clinical utility of thallium-201 myocardial perfusion imaging in aortic valve stenosis was evaluated at rest and after exercise in three groups of patients: (1) 20 normal subjects, (2) 11 patients with aortic valve stenosis and coronary artery disease (70 percent or greater narrowing of luminal diameter), 11 patients with aortic valve stenosis without coronary artery disease (30 percent or ...

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The (F)utility of the thallium-201 quantitative lung ...

Exercise-induced increases in pulmonary uptake of thallium-201 (201 Tl) have been associated with exercise-induced myocardial dysfunction. To evaluate this phenomenon more replicably, a quantitative semi-automated computer program was used to generate, from anterior exercise and delayed views, lung-myocardial ratios (LMR) of 201 Tl uptake in 78 patients [40 normal, 38 with coronary artery

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Prognostic utility of the exercise thallium-201 test in ...

The goal of this study was to determine the prognostic utility of the exercise thallium-201 stress test in ambulatory patients with chest pain who were also referred for cardiac catheterization. Accordingly, 4 to 8 year (mean +/- 1SD, 4.6 +/- 2.6 years) follow-up data were obtained for all but one of 383 patients who underwent both exercise thallium-201 stress testing and cardiac ...

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References in Thallium-201 Myocardial Perfusion Imaging ...

Thallium-201 myocardial perfusion imaging is being widely used to assess patients with suspected coronary artery disease.1,2 Initially after injection of the thallium, regional thallium myocardial uptake reflects regional coronary blood flow.3 Images two or three hours later are obtained to determine if the regions with reduced thallium uptake initially fill-in (redistribute), which indicates ...

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Thallium Stress Test: Purpose, Procedure, and Risks

17-09-2018  A radioisotope or radiopharmaceutical medication, such as thallium or sestamibi, is injected through the IV. The radioactive material marks your blood flow and is picked up by the gamma camera.

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Article - Myocardial viability - Applied Radiology

Myocardial viability with Tl-201. The most widely used radionuclide method to assess myocardial viability is rest/delayed thallium-201 SPECT. When Tl-201 is injected at rest, it is distributed to the myocardium proportionally to coronary arterial blood flow. At a delayed 3- to 5-hour interval, the radiotracer washes out and redistributes.

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