The Efficient Realization of B Mode Ultrasonic Digital Scan Conversion Based On Radix-4 CORDIC Algorithm

摘要：

Coordinate transform is the core technology in Digital Scan Conversion (DSC) of B-mode ultrasonic, and its speed mostly determines the frame rate of Bmode imaging. In the traditional coordinate transform process, ultrasonic echo data is converted from polar coordinate to rectangular directly; the process is time-consuming and the data is unsuitable for posttreatment In this paper, we employed the CORDIC Algorithm in coordinate transform. We compared the conventional radix-2 CORDIC algorithm with the improved radix-4 CORDIC algorithm and found the later saved half iterations at the same frequency. Whats more, radix-4 CORDIC algorithm had smaller hardware consumption when using the pipelined structure. These results revealed that radix-4 CORDIC is an excellent method for high-speed DSC of B-mode ultrasonic.

关键词： coordinate transform DSC radix-4 CORDIC algorithm FPGA architecture

作者: Peng Zeng Fanshui Lu Xingqun Zhao

作者单位: Department of Biomedical Engineering, Southeast University, Nanjing Jiangsu, 210096, China

会议类型: 国际会议

会议名称: 2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

会议地点: 上海

会议语种:英文

页码: 2714-2717

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）