Contrast-Enhanced Look-Locker and Delayed-Enhancement MRI in Patients with Apical Hypertrophic Cardiomyopathy: Distribution of Myocardial Damages and Its Association with Risk Factors and Cardiac Function

Yasuo Amano¹, Masaki Tachi¹, Hitomi Tani¹, Shinichiro Kumita¹, Makoto Obara²

Apical hypertrophic cardiomyopathy (APH) showed myocardial hypertrophy and scarring dominantly in the left ventricular apex. The mass percentage of myocardial scarring is associated with the decrease in the LV ejection fraction and traditional risk factors plus family history of hypertrophic cardiomyopathy in APH. Conversely, we do not have to quantify myocardial T1 value for the risk stratification of APH, because the T1 value did not differ between the apex and other non-hypertrophied myocardium and had no association with the risk factors.