Objective To investigate the value of two-dimensional ultrasound speckle tracking technology, putting ₁₈F-FDG PET as the gold standard. Methods 30 cases with ischemic cardiomyopathy, underwent PET-CT imaging、regular UCG and STI. Results PET-CT imaging showed 395 segments with perfusion reduce, combined with myocardial metabolic imaging, a total of 310 segments perfusion - metabolic didn"t match, which means the survival myocardium; and 85 segments showed Perfusion-metabolic match, which suggested unviability. By analysis of the mate of STI, the peak RS of segments with viability was higher than that without, and the difference was significant, Conclusion The two-dimensional ultrasound speckle tracking technology peak RS is a good way to predict cardiac activity, and can be used for detecting survival myocardium, and hopeful to take of PET/CT in clinical application.