Peng Kuan, He Ling, Zhu Ziqiang, Tang Jingtian, Xiao Jiaying
Appl Opt. 2013 Dec 1;52(34):8270-9. doi: 10.1364/AO.52.008270.
Compared with commonly used analytical reconstruction methods, the frequency-domain finite element method (FEM) based approach has proven to be an accurate and flexible algorithm for photoacoustic tomography. However, the FEM-based algorithm is computationally demanding, especially for three-dimensional cases. To enhance the algorithm's efficiency, in this work a parallel computational strategy is implemented in the framework of the FEM-based reconstruction algorithm using a graphic-processing-unit parallel frame named the "compute unified device architecture." A series of simulation experiments is carried out to test the accuracy and accelerating effect of the improved method. The results obtained indicate that the parallel calculation does not change the accuracy of the reconstruction algorithm, while its computational cost is significantly reduced by a factor of 38.9 with a GTX 580 graphics card using the improved method.
与常用的解析重建方法相比，基于频域有限元法（FEM）的方法已被证明是一种用于光声层析成像的准确且灵活的算法。然而，基于FEM的算法计算量很大，尤其是对于三维情况。为提高该算法的效率，在这项工作中，使用名为“计算统一设备架构”的图形处理单元并行框架，在基于FEM的重建算法框架内实施了一种并行计算策略。进行了一系列模拟实验以测试改进方法的准确性和加速效果。获得的结果表明，并行计算不会改变重建算法的准确性，而使用改进方法通过GTX 580图形卡其计算成本显著降低了38.9倍。
