Myocardial motion and strain rate analysis from ultrasound sequences

Authors:
Michael Sühling;Muthuvel Arigovindan;Christian Jansen;Patrick Hunziker;Michael Unser
Affiliations:
Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland;Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland;University Hospital Basel, Basel, Switzerland;University Hospital Basel, Basel, Switzerland;Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Venue:
IWCM'04 Proceedings of the 1st international conference on Complex motion
Year:
2004

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Abstract

We present an optical flow-based algorithm to estimate heart wall motion from ultrasound sequences. The method exploits two ultrasound modalities, i.e., B-mode (grayscale data) and tissue Doppler (partial velocity measurements). We use a local affine velocity model to account for typical heart motions such as contraction/expansion and shear. The affine model parameters give also access to so-called strain rate parameters that describe local myocardial deformation such as wall thickening. The estimation of large motions is made possible through the use of a coarse-to-fine multi-scale strategy, which also adds robustness to the method.