thallium stress test

thallium stress test
(for coronary artery disease) stress is placed on the cardiovascular system by exercising the patient on a treadmill or bicycle ergometer. Thallous chloride Tl-201 is injected intravenously when stress is maximal, just prior to exercise cessation. Immediate (stress) and delayed (redistribution) images are obtained with a gamma camera (see thallium-201 myocardial perfusion scintigraphy); then abnormalities of radionuclide distribution and redistribution are assessed, compared with electrocardiograms obtained during exercise, and used to diagnose areas of ischemia and coronary artery disease. In patients incapable of exercise, stress is induced by injection of dipyridamole or adenosine.

Medical dictionary. 2011.

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  • Thallium — (pronEng|ˈθæliəm) is a chemical element with the symbol Tl and atomic number 81. [ [http://periodic.lanl.gov/elements/81.html thallium ] , Los Alamos National Laboratory. Retrieved November 21, 2006.] This soft gray malleable poor metal resembles …   Wikipedia

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  • Persantine thallium scan — A type of myocardial perfusion scan done to disclose any areas of the heart muscle that may not be getting enough blood to perfuse them properly. Persantine (Diprydamole) is a medication that dilates (widens) the coronary arteries. It produces an …   Medical dictionary

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