GPU based simulator of ultrasound pressure fields

Yang Wei, Y. Yang, Wenxi Fei
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Abstract

Simulation of ultrasound pressure fields is representative computationally demanding algorithm. In order to get results back in finite time, the number of source points and observation points are often limited. The introduction of graphics processing unit (GPU) can significantly speed up this algorithm. We implemented the simulator which based on the same principle as the Ultrasim toolbox, where spherical waves responses from several point sources are accumulated in a set of observation points, hence solving the Rayleigh-Sommerfeld integral. For each calculation at a given observation point is independent of the result at all other observation points, the problem is therefore perfect for GPU computing. Compared with Ultrasim we give a 400 times speedup when simulating on 150K observation points.
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基于GPU的超声压力场模拟器
超声压力场仿真是计算量大的典型算法。为了在有限的时间内得到结果,源点和观测点的数量往往是有限的。图形处理单元(GPU)的引入可以显著加快该算法的速度。我们基于与Ultrasim工具箱相同的原理实现了模拟器,其中来自多个点源的球面波响应累积在一组观测点中,从而求解Rayleigh-Sommerfeld积分。对于给定观测点的每个计算都独立于所有其他观测点的结果,因此该问题非常适合GPU计算。与Ultrasim相比,我们在150K的观测点上进行模拟时,速度提高了400倍。
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