Cardiac function estimation for resynchronization therapy: Comparison between multislice-ct and speckle tracking imaging

New tools for the assessment of intra-ventricular dyssynchrony can enable the optimization of Bi-ventricular cardiac resynchronization therapy. Multislice-CT (MSCT) imaging may be a good complement to ultrasound (US) imaging modalities. Moreover, its potential to get a functional and anatomical description of the heart within a single exam constitutes a motivation for this work. This paper is focused on the comparison of motion descriptive features estimated from two modalities: MSCT and speckle tracking imaging (STI). The method of motion estimation in MSCT imaging that we have proposed is applied and allows to decompose motion in its main components. These motion components have been compared with those provided by STI. First results obtained on two patients databases are shown and discussed. A first qualitative evaluation shows how MSCT is powerful, providing the means to characterize dyssynchrony in 3D.