Comparison of rest thallium-201 imaging and rest technetium-99m sestamibi imaging for assessment of myocardial viability in patients with coronary artery disease and severe left ventricular dysfunction. - Kauffman,G.J.; Boyne,T.S.; Watson,D.D.; Smith,W.H.; Beller,G.A. (J Am Coll Cardiol, 1996)