Meeting Banner
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.

Abstract PDF E-Poster Video

Keywords

allowing altered apex assessed assessing assessment assist axis bottom cardiac cardiology care chamber characteristics cine clearly clinical combination commonly consideration curve curves cycle defined describes determined deviation diastole diastolic discriminant displacement distinguishing division drawn dynamics dysfunction early efficient ejection evaluated failure fraction function global heart implemented improve indicating involves junction known lateral length long longitudinal manually matched measure measured medical medicine middle motion multivariate myocardial necessarily noninvasive normalized novel onto operating patient patients position potential potentially preserved pressures previous previously projected quantitative radiology readily receiver resolution respectively retrospectively routine scanned school selected sensitivity simple since slice spatial specificity speckle studies subjects system systolic taken temporal tissue track tracked tracking trio understanding valuable velocity ventricular view wall walls years