中国医疗设备2018，Vol.33Issue(1)：34-38,56,6.DOI:10.3969/j.issn.1674-1633.2018.01.008
Chirp编码激励用于高频医学超声系统的实验及性能评价
Experiments and Performance Evaluation of the Chirp Coded Excitation for High-Frequency Medical Ultrasound Systems
摘要
Abstract
Aiming at the performance evaluation problem of various excitation modes of coding excitation technology used in high frequency ultrasound imaging system, this paper designed an experimental system which could carry out coding and pulse excitation and conducted a series of experiments based on it. The experimental system was composed of FPGA chip XC7K325T, excitation module, AD7982, T/R switch, probe, two-dimensional control platform, software components, and so on, which was based on the TR circuit board of Neusoft medical N7 system. In the experiments, comparing with the traditional excitation mode, the resolution, the detection depth, the signal to noise ratio and the frame rate of the high frequency ultrasound imaging system were discussed. The high frequency ultrasound imaging system was further applied to the imaging of the various phantoms. The advantages and disadvantages of the coded excitation mode were obtained in the practical application in comparison with traditional mode. The experimental results showed that the chirp mode could be used to optimize the penetration depth, lateral resolution, CNR and other imaging parameters of high frequency ultrasound with some sacrifices in axial resolution.关键词
医学超声/编码激励技术/高频超声成像/分辨率/信噪比Key words
medical ultrasound/coded excitation technology/high-frequency ultrasonic imaging/resolution ratio/signal-to-noise ratio分类
医药卫生引用本文复制引用
张耀楠,付强,唐亮..Chirp编码激励用于高频医学超声系统的实验及性能评价[J].中国医疗设备,2018,33(1):34-38,56,6.基金项目
陕西省自然科学基础研究计划(2017JM8085) （2017JM8085）
西安思源学院校级重大科研项目(XASY-B1601).思源学院校级重大科研项目 （XASY-B1601）
