Myocardial imaging using selective intracoronary injection of Thallium-201

After selective coronary arteriography 150 muCi of Thallium-201 was injected into each coronary artery. Scintigraphy of the myocardium was performed about half an hour after the injection. In a series of ten patients the myocardium was clearly visualized in the gamma images. No adverse effects were noted.