Detection of viable myocardium by thallium-201 compared to pet in patients with moderate versus severe ischemic left ventricular dysfunction - Marin Neto, J A; Arrighi, J A; Brandão, Roberto de Oliveira; Dilszian, V; Filardi, P P; Bacharach, S L; Maurea, S (Journal of the American College of Cardiology, 1992)