NDLI: Motion and deformation estimation of cardiac ultrasound sequences using an anatomical B-spline transformation model

Content Provider	IEEE Xplore Digital Library
Author	Heyde, B. Claus, P. Jasaityte, R. Barbosa, D. Bouchez, S. Vandenheuvel, M. Wouters, P. Maes, F. D'hooge, J.
Copyright Year	2012
Description	Author affiliation: Cardiovascular Imaging and Dynamics, Catholic University of Leuven, Leuven, Belgium (Heyde, B.; Claus, P.; Jasaityte, R.; Barbosa, D.; D'hooge, J.) \|\| Medical Image Computing, Catholic University of Leuven, Leuven, Belgium (Maes, F.) \|\| Department of Anesthesiology, Ghent University, Ghent, Belgium (Bouchez, S.; Vandenheuvel, M.; Wouters, P.)
Abstract	We present a novel method for tracking myocardial motion in 2D ultrasound sequences based on non-rigid registration using an anatomical free-form deformation (AFFD) model where the basis functions are locally oriented along the radial and circumferential direction of the left ventricle (LV). This formulation allows us to model the LV motion more naturally compared to previously proposed FFD's defined on a regular Cartesian grid (CFFD). In this paper we compare the performance of the AFFD against the CFFD model in an in-vivo setting. Short-axis images were acquired in five open-chest sheep using sonomicrometry as ground-truth deformation estimates. We demonstrated that regional end-systolic strain values assessed with the AFFD model are comparable with CFFD, while also displaying a statistically lower drift at the end of the cardiac cycle and a better agreement with a manual end-systolic reference. Furthermore, tracking using AFFD was visually more appealing to clinical experts.
Starting Page	266
Ending Page	269
File Size	213896
Page Count	4
File Format	PDF
ISBN	9781457718571
ISSN	19457928
e-ISBN	9781457718588
DOI	10.1109/ISBI.2012.6235535
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-02
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Strain Myocardium Splines (mathematics) Crystals Ultrasonic imaging Deformable models Correlation in-vivo Non-rigid registration anatomical deformation model strain echocardiography
Content Type	Text
Resource Type	Article

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