Improved Myocardial Motion Estimation Combining Tissue Doppler and B-Mode Echocardiographic Images

Abstract : We propose a technique for myocardial motion estimation based on image registration using both B-mode echocardiographic images and tissue Doppler sequences acquired interleaved. The velocity field is modeled continuously using B-splines and the spatiotemporal transform is constrained to be diffeomorphic. Images before scan conversion are used to improve the accuracy of the estimation. The similarity measure includes a model of the speckle pattern distribution of B-mode images. It also penalizes the disagreement between tissue Doppler velocities and the estimated velocity field. Registration accuracy is evaluated and compared to other alternatives using a realistic synthetic dataset, obtaining mean displacement errors of about 1 mm. Finally, the method is demonstrated on data acquired from six volunteers, both at rest and during exercise. Robustness is tested against low image quality and fast heart rates during exercise. Results show that our method provides a robust motion estimate in these situations.
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IEEE Transactions on Medical Imaging, Institute of Electrical and Electronics Engineers, 2014, 33 (11), pp.2098 - 2106. 〈10.1109/TMI.2014.2331392〉
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https://hal.inria.fr/hal-01095151
Contributeur : Sophie Giffard-Roisin <>
Soumis le : lundi 15 décembre 2014 - 10:55:06
Dernière modification le : vendredi 12 janvier 2018 - 11:03:34

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Antonio Porras, Martino Alessandrini, Mathieu De Craene, Nicolas Duchateau, Marta Sitges, et al.. Improved Myocardial Motion Estimation Combining Tissue Doppler and B-Mode Echocardiographic Images. IEEE Transactions on Medical Imaging, Institute of Electrical and Electronics Engineers, 2014, 33 (11), pp.2098 - 2106. 〈10.1109/TMI.2014.2331392〉. 〈hal-01095151〉

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