PURPOSE: We aimed to evaluate the feasibility of positron emission tomography feature tracking (PETFT) for assessing endocardial wall strain by comparing it with cardiac magnetic resonance (CMR)-derived feature tracking (CMRFT). METHODS: We enrolled 83 consecutive patients with coronary artery disease who underwent rest-pharmacologic stress RESULTS: PETFT and CMRFT showed significant correlations (R = 0.57 [95% CI 0.41-0.70], R = 0.71 [95% CI 0.58-0.80], R = 0.59 [95% CI 0.43-0.71], and R = 0.69 [95% CI 0.56-0.79] for rest GLS, rest GCS, stress GLS, and stress GCS, respectively
p <
0.001 for all). Bland-Altman plot showed good agreements, while a systematic error was observed (LOA -10.2-8.8, -8.7-10.7, -10.5-8.5, and -9.4-12.0
bias -0.7, 1.0, -1.0, and 1.3
for rest GLS, rest GCS, stress GLS, and stress GCS
respectively). CONCLUSION: PETFT has been identified as a feasible technique compared to CMRFT, highlighting its potential as a novel tool for assessing wall strain in routine clinical settings.