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Left Ventricle Tracking in CMR Images for Measuring Myocardial Extracellular Volume Fraction

A computer-assisted tool to efficiently locate left ventricle myocardium centerline contour from short-axis MOLLI sequence of CMR images using a global and local shape tracking algorithm is presented in this paper. The algorithm can track both the changing of ventricle shape due to respiratory motion and the changing of pixel values due to different T I time when an image is scanned through the MOLLI sequence. It increases the measurement efficiency by automating the myocardial extracellular volume fraction Ve calculation for left ventricle, which is important to characterize adverse myocardial remodeling.