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Full-wave attenuation reconstruction in the time domain for ultrasound computed tomography

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Pérez Liva, Mailyn and Herraiz, J. L. and Udías Moinelo, José Manuel and Cox, B. T. and Treeby, B. E. (2016) Full-wave attenuation reconstruction in the time domain for ultrasound computed tomography. In 2016 IEEE 13th International Symposium on Biomedical Imaging (ISBI). Proceedings / IEEE International Symposium on Biomedical Imaging: from nano to macro. IEEE International Symposium on Biomedical Imaging . IEEE, pp. 710-713. ISBN 978-1-4799-2349-6; 978-1-4799-2350-2

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Official URL: http://dx.doi.org/10.1109/ISBI.2016.7493365


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Abstract

Acoustical attenuation (AA) maps in Ultrasound Computed Tomography (USCT) provide enhanced contrast between tissues compared to the speed of sound (SS), which is the most common property of tissue studied with this technique. Currently, the full wave inversion (FWI) methods used for their reconstruction are very different: the AA is mainly estimated using frequency domain algorithms, while the SS is more often recovered in the time domain. In this work we present a novel strategy to recover the attenuation maps through a straightforward and simplified procedure in the time domain. A gradient descent method was employed to optimize iteratively the attenuation distribution. The expression for the functional gradient of the norm of the global deviation between experimental and simulated data was obtained using an adjoint method. The optimization code, implemented in C++, employs a CUDA version of the k-Wave software to perform forward and backward wave propagation. Noisy simulated data was used to test the performance of the proposed method. The simplicity of the formulation of this new method may facilitate the reconstruction of AA and SS maps under a common framework in USCT.


Item Type:Book Section
Additional Information:

© IEEE 2016.
ISSN: 1945-7928
IEEE International Symposium on Biomedical Imaging (ISBI)(13. 2016. Praga, República Checa).
This work was supported by Comunidad de Madrid
(S2013/MIT-3024 TOPUS-CM). The authors would like to
thank Jiri Jaros for assistance with the CUDA code.

Uncontrolled Keywords:Power law absorption; Fractional laplacian; Media
Subjects:Sciences > Physics > Nuclear physics
ID Code:42107
Deposited On:20 Apr 2017 17:03
Last Modified:10 Dec 2018 14:57

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