The comprehensive assessment of left ventricular (LV) remodeling by cardiac magnetic resonance (CMR) imaging with T1 mapping and feature tracking (FT) technology in obstructive sleep apnea (OSA) was conducted in this study. Indexed extracellular volume (iECV) and indexed cellular volume (iCV) of myocardial tissue construction were derived from T1 mapping. The results show that elevated LV mass index (LVMi) in OSA was mainly from iCV, while not from iECV, with no LV ejection function (LVEF) or strain parameters impairment. Cellular hypertrophy accompanied with normal LV systolic function in patients with OSA may contribute to adaptive LV remodeling phase.
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