000143734 001__ 143734
000143734 005__ 20180317094139.0
000143734 0247_ $$2doi$$a10.1117/12.844691
000143734 02470 $$2ISI$$a000284751400018
000143734 037__ $$aCONF
000143734 245__ $$aSound Speed Estimation Using Wave-based Ultrasound Tomography: Theory and GPU Implementation
000143734 269__ $$a2010
000143734 260__ $$bSpie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa$$c2010
000143734 336__ $$aConference Papers
000143734 490__ $$aProceedings of SPIE-The International Society for Optical Engineering
000143734 520__ $$aWe 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.
000143734 6531_ $$aacoustic wave equation
000143734 6531_ $$agraphical processing units
000143734 6531_ $$ainverse problems
000143734 6531_ $$aultrasound tomography
000143734 700__ $$0244019$$aRoy, Olivier$$g118640
000143734 700__ $$0241124$$aJovanovic, Ivana$$g154787
000143734 700__ $$0242499$$aHormati, Ali$$g171232
000143734 700__ $$0242502$$aParhizkar, Reza$$g177240
000143734 700__ $$0240184$$aVetterli, Martin$$g107537
000143734 7112_ $$aSPIE Medical Imaging$$cSan Diego, CA$$d2010
000143734 773__ $$tProceedings of the SPIE Medical Imaging
000143734 8564_ $$s789915$$uhttps://infoscience.epfl.ch/record/143734/files/76290J_1.pdf$$yn/a$$zn/a
000143734 909CO $$ooai:infoscience.tind.io:143734$$pIC$$pconf
000143734 909C0 $$0252056$$pLCAV$$xU10434
000143734 917Z8 $$x222073
000143734 937__ $$aLCAV-CONF-2010-002
000143734 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000143734 980__ $$aCONF