关键词: 扇形扫描转换, 插值, 计算统一设备架构, 图形处理器, 并行计算

Abstract: Scan conversion is one of the most important and widely-used technologies in medical ultrasound imaging. Unfortunately, traditional scan conversion algorithm needs intensive computation, which becomes one of the performance bottlenecks of the ultrasound system. In order to overcome this shortcoming, three parallel algorithms called real-time scan conversion for ultrasound based on Compute Unified Device Architecture (CUDA) were proposed. Through assigning the best structure of threads, rationally arranging data transmission between Central Processing Unit (CPU) and Graphic Processing Unit (GPU), and dividing computing tasks, throughput of the algorithm was increased and real-time requirement was met. Finally, this paper compared the three types of real-time scan conversion algorithms on CUDA to traditional method. This paper gets a frame rate of about more than 746fps with the picture size of 3121×936, which is about 300 times faster than the CPU implementation.

Key words: sector scan conversion, interpolation, Computing Unified Device Architecture (CUDA), Graphic Processing Unit (GPU), parallel computing