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Figure 3 Accuracy of Stress Deformation Parameters for Diagnosis of CAD

The sensitivity, specificity, and accuracy of the 3 most important strain rate imaging parameters during peak stress are shown in the 2 figures for the patients with coronary angiography. Values for the segment length method and the velocity gradient method are given in the 2 figures. The sensitivity, specificity, and accuracy for the optimal cutoffs values are based on receiver-operating characteristics curves in group A and are evaluated here in group B. CAD = coronary artery disease; PSI = postsystolic strain index; S_es = end-systolic strain; SR_s = peak systolic strain rate.