MOTION TRACKING IN MRI BY HARMONIC STATE MODEL: CASE OF LEFT HEART

Abstract

We discuss about development of a new method of tracking closed contour
which is based on a Harmonic State Model (HSM), in order to carry out the
tracking of Left Ventricle (LV) during all the cardiac cycle. The Lionel'
s
method provides us the trajectories of the I.V contour from the tracking of
motion during the cardiac cycle, and information necessary to the analysis
of the cardiac motion. Using the HSM model allows a robust and correct
modeling of closed contour. The application in simulation of Lionels method
gives satisfactory results. On the real data extracted from MRI sequences,
the calculated trajectories, points of the LV contour throughout the cardiac
cycle, allow to have a clearly visible difference between a healthy heart and
a pathological heart.