Quantitative relation between myocardial viability and improvement in heart failure symptoms after revascularization in patients with ischemic cardiomyopathy. - Di Carli,M.F.; Asgarzadie,F.; Schelbert,H.R.; Brunken,R.C.; Laks,H.; Phelps,M.E.; Maddahi,J. (Circulation., 1995)