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Chest, Vol 69, 168-173, Copyright © 1976 by American College of Chest Physicians

ARTICLES

Detection of unstable angina by 99m technetium pyrophosphate myocardial scintigraphy

AM Abdulla, MI Canedo, BC Cortez, KD McGinnis and SK Wilhelm

99mTechnetium stannous pyrophosphate has been shown to accumulate in acutely infarcted myocardium. To determine if the isotope is also taken up by severely ischemic, but not necrotic myocardium, we performed myocardial scintigraphic studies in 17 patients with chest pains. Seven of the patients satisfied conventional clinical, electrographic, and laboratory criteria for the diagnosis of unstable angina and showed no electrocardiographic or enzymatic evidence of myocardial necrosis. Five of these seven patients with unstable angina demonstrated abnormal localized patterns, and one showed a borderline picture. Myocardial scintiscans were normal in all of a control group of ten patients with stable angina. Thus, scanning with 99mtechnetium stannous pyrophosphate is shown to be of value in the objective demonstration of myocardial abnormality in unstable angina.




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Copyright © 1976 by the American College of Chest Physicians.