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Which Test, for Whom, and Why?

Abdulmassih S. Iskandrian, MD; A-Hamid Hakki, MD; Bernard L. Segal, MD

Arch Intern Med. 1982;142(5):872-873.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Exercise thallium 201 myocardial scintigraphy (TMS) and rest-exercise radionuclide ventriculography (RNV) are important noninvasive tests used to examine patients with cardiac diseases. Thallium 201 myocardial scintigraphy assesses myocardial perfusion. A perfusion defect during exercise is almost always an indicator of coronary artery disease. Thallium 201 myocardial scintigraphy is useful in predicting the diseased vessel or vessels, since the vascular distribution of the three major vessels can be separated when imaging is done in multiple projections. Comparison of the exercise images with the redistribution (delayed) images may help differentiate scarred from ischemic myocardium.^1,2

Radionuclide ventriculography provides information about the size, wall motion, and ejection fractions of the left and right ventricles.³ Normal subjects respond to exercise with an increase of 5% or more in the left ventricular ejection fraction. On the other hand, patients with coronary artery disease, cardiomyopathy, or valvular heart disease respond to exercise with either no . . . [Full Text PDF of this Article]

Author Affiliations
Philadelphia

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