Figure 7: Kaplan-Meier curves depicting survival free from cardiac transplant or mechanical circulatory support in ischemic cardiomyopathy patients who had both single-photon emission computed tomography perfusion imaging and echocardiographic dyssynchrony analysis before CRT. (A) Extent scar burden (SRS > 27) was associated significantly lower survival. (B) LV dyssynchrony defined as both longitudinal and radial dyssynchrony was not predictive of survival [48].