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Background Left ventricular (LV) mechanics (e.g., strain) provide a clinically relevant description of LV function. Automated endocardial feature tracking (FT) for steady state free precession (SSFP) images is increasingly used to quantify strain, yet accuracy limitations have been noted. Furthermore, similarities between FT and global strain calculated from endocardial contour lengths have been noted, but the contribution of epicardial contour strain are unknown. Displacement encoding with stimulated echoes (DENSE) CMR measures myocardial motion and thus provides a gold standard to evaluate these differences. We hypothesized that FT or endo-/epicardial contour strains would not agree with DENSE strains.

Differences in left ventricular strain measurements between cine DENSE cardiac magnetic resonance and SSFP feature tracking