[Myocardial scintigraphy with pyrophosphate-99mTc in transitory myocardial ischemia in chronic ischemic heart disease].

Scintigraphy of the myocardium with pyrophosphate-99mTc was used in the examination of 45 patients with chronic ischemic heart disease and 3 patients with vegetovascular dystonia. A direct dependence of the character of the scintigram on the anginous attack was revealed. Accumulation of pyrophosphate-99mTc in the myocardium was observed in all patients with the agent injected just before the attack, during the attack or in the first 8 hours after it. Pyrophosphate-99mTc accumulation in the myocardium demonstrated on the scintigrams of the myocardium was less intense but more diffuse and extensive in chronic ischemic heart disease than in the focus of acute myocardial infarction.