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Thallium-201 myocardial perfusion imaging is an established modality for the detection and risk stratification of ischemic heart disease.
Myocardial perfusion imaging with thallium-201 has been used to improve detection and risk stratification in ischemic heart disease. Thallium-201 is administered intravenously as a monovalent cation during peak exercise, during the infusion of the coronary vasodilating agent dipyridamole (or possibly adenosine), or at rest in patients with unstable angina. Like potassium, intravenously injected thallium is efficiently extracted by viable myocardium; thus, its initial distribution is related to myocardial perfusion and viability. Imaging is performed with widely available gamma cameras: either a stationary type for planar or two-dimensional imaging or a rotational type for single-photon-emission computed tomography or tomographic imaging.The . . .
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Pohost et al. (1990) studied this question.
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