Sound speed estimation using wave-based ultrasound tomography: theory and GPU implementation
| Autor: | Ali Hormati, Martin Vetterli, Olivier Roy, Ivana Jovanovic, Reza Parhizkar |
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| Rok vydání: | 2010 |
| Předmět: |
inverse problems
Computer science business.industry graphical processing units ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Initialization Reconstruction algorithm Inverse problem medicine.disease Imaging phantom acoustic wave equation Ultrasound Tomography Computational science Breast cancer ultrasound tomography medicine Ultrasound transmission tomography Acoustic wave equation Computer vision Tomography Artificial intelligence business ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.844691 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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