PETDISCUSSION
It has been postulated that the presence of viable myocardium
represents an unstable situation, prone to ischemic
and arrhythmic events in patients who do not undergo
revascularization; on the basis of this hypothesis, the extent
of jeopardized, viable myocardium might be of less importance
than the simple presence of viable tissue. The results
of the current study, however, indicate that not simply the
presence of a perfusion-FDG mismatch but rather the
extent of mismatch determines the long-term mortality in
patients with ischemic cardiomyopathy who are medically
treated.