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Cardiac Function Assessment From 3-D Tracking Of Magnetically Tagged Myocardium

Clinical assessment of the cardiac function currently relies on twodimensional analysis of cross-sectional images showing the ventricular anatomy. Potential analytical problems arise from neglecting the longitudinal component of cardiac motion, which can not be directly measured from the available data sets. This cross-planar motion of curved myocardium causes apparent changes in the observed wall thickness which result in systematic errors in the assessment of cardiac function. In this paper, an image processing method is proposed, which compensates for cross-planar motion of myocardium based on 3-D analysis of multiplanar, magnetically tagged MR images of the heart.