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Abstract #3806

Quantitative Assessment of Atrioventricular Junction Motion in Patients with Hypertrophic Cardiomyopathy-A Cine MRI Study

Sohae Chung1, Shahryar Saba2, Robert Donnino2, Monvadi B. Srichai1, Stuart D. Katz2, Leon Axel1

1Radiology Department, NYU Langone Medical Center, New York, NY, United States; 2Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, NY, United States

Assessment of diastolic function involves consideration of its dynamics, which are determined by a combination of pressures and myocardial relaxation. In our previous study, we demonstrated a method for assessing diastolic function with MRI in patients with heart failure, using cine MRI to track the motion of the atrioventricular junction (AVJ). Since the AVJ is clearly defined in long-axis cine MRI, its position can be readily tracked, allowing us to measure its longitudinal motion. In this work, we measured the AVJ motion in patients with hypertrophic cardiomyopathy, a group known to have altered LV relaxation, to assess their diastolic function.