Thallium scintigraphy in patients with angina at rest.

Abstract
Sixty six patients with angina at rest were investigated bye exercise electrocardiography, thallium scintigraphy, and coronary arteriography. A positive exericse electrocardiogram was highly predictive (93%) but poorly sensitive (52%) of coronary artery disease (.gtoreq. 50% stenosis). Thallium scintigraphy was a predictive of the presence of coronary artery disease (91%) but was also highly sensitive (91%). The diagnostic contribution of the thallium scan was greatest in those patients with an inconclusive exercise elecrocardiogram without Q waves.