Abstract #0873
Evaluation of left ventricular diastolic function with cine magnetic resonance imaging: three-dimensional volume tracking of mitral annulus motion
Vincent Wu 1 , Sohae Chung 1 , Sharath Bhagavatula 1 , and Leon Axel 1
1
Department of Radiology, New York University
School of Medicine, New York, NY, United States
Cardiac magnetic resonance (CMR) methods of assessing
diastolic dysfunction remain a developing area. This
study presents a novel CMR approach to quantification of
diastolic dynamics, using 3D volume tracking of the
mitral annulus (MA). The utility of this method is
demonstrated by distinguishing diastolic MA excursion
profiles between normal subjects and hypertrophic
cardiomyopathy (HCM) patients. Results show that HCM
hearts have slower relative MA sweep volume rates during
early diastole, but higher MA sweep volume rates during
atrial contraction. This technique offers further
insight into ventricular filling biomechanics, and it
incorporates information from both axial and
longitudinal MA motions.
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