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Proceedings Paper

Sound speed estimation using wave-based ultrasound tomography: theory and GPU implementation
Author(s): O. Roy; I. Jovanović; A. Hormati; R. Parhizkar; M. Vetterli
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Paper Abstract

We present preliminary results obtained using a time domain wave-based reconstruction algorithm for an ultrasound transmission tomography scanner with a circular geometry. While a comprehensive description of this type of algorithm has already been given elsewhere, the focus of this work is on some practical issues arising with this approach. In fact, wave-based reconstruction methods suffer from two major drawbacks which limit their application in a practical setting: convergence is difficult to obtain and the computational cost is prohibitive. We address the first problem by appropriate initialization using a ray-based reconstruction. Then, the complexity of the method is reduced by means of an efficient parallel implementation on graphical processing units (GPU). We provide a mathematical derivation of the wave-based method under consideration, describe some details of our implementation and present simulation results obtained with a numerical phantom designed for a breast cancer detection application. The source code of our GPU implementation is freely available on the web at www.usense.org.

Paper Details

Date Published: 12 March 2010
PDF: 12 pages
Proc. SPIE 7629, Medical Imaging 2010: Ultrasonic Imaging, Tomography, and Therapy, 76290J (12 March 2010); doi: 10.1117/12.844691
Show Author Affiliations
O. Roy, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
I. Jovanović, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
A. Hormati, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
R. Parhizkar, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
M. Vetterli, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 7629:
Medical Imaging 2010: Ultrasonic Imaging, Tomography, and Therapy
Jan D'hooge; Stephen A. McAleavey, Editor(s)

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