Dynamic programming on a tree for ultrasound elastography

Roozbeh Shams; Mathieu Boily; Paul A. Martineau; Hassan Rivaz

doi:10.1117/12.2217345

1 April 2016 Dynamic programming on a tree for ultrasound elastography

Roozbeh Shams, Mathieu Boily, Paul A. Martineau, Hassan Rivaz

Author Affiliations +

Proceedings Volume 9790, Medical Imaging 2016: Ultrasonic Imaging and Tomography; 97901F (2016) https://doi.org/10.1117/12.2217345
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

Ultrasound Elastography is an emerging imaging technique that allows estimation of the mechanical characteristics of tissue. Two issues that need to be addressed before widespread use of elastography in clinical environments are real time constraints and deteriorating effects of signal decorrelation between pre- and post-compression images. Previous work has used Dynamic Programming (DP) to estimate tissue deformation. However, in case of large signal decorrelation, DP can fail. In this paper we, have proposed a novel solution to this problem by solving DP on a tree instead of a single Radio-Frequency line. Formulation of DP on a tree allows exploiting significantly more information, and as such, is more robust and accurate. Our results on phantom and in-vivo human data show that DP on tree significantly outperforms traditional DP in ultrasound elastography.

Citation Download Citation

Roozbeh Shams, Mathieu Boily, Paul A. Martineau, and Hassan Rivaz "Dynamic programming on a tree for ultrasound elastography", Proc. SPIE 9790, Medical Imaging 2016: Ultrasonic Imaging and Tomography, 97901F (1 April 2016); https://doi.org/10.1117/12.2217345

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