编码发射技术在医学高频超声成像中的研究进展  

Advances in encoding transmission techniques in medical high frequency ultrasound imaging

作　　者：王宁浩 徐杰[1] 韩志乐[1] 崔崤峣[1] 简小华[1] WANG Ninghao;XU Jie;HAN Zhile;CUI Yaoyao;JIAN Xiaohua(Suzhou Institute of Biomedical Engineering and Technology,Chinese Academy of Sciences,Suzhou 215163,Jiangsu,China;University of Science and Technology of China,Hefei 230026,Anhui,China)

机构地区：[1]中国科学院苏州生物医学工程技术研究所,江苏苏州215163 [2]中国科学技术大学,安徽合肥230026

出　　处：《声学技术》2020年第5期517-524,共8页Technical Acoustics

基　　金：科技部重点研发计划项目(2018YFC0116201);中科院科研仪器设备研制项目(YJKYYQ20180031);江苏省自然科学基金资助(BK20161235)。

摘　　要：高频超声成像以其高分辨和实时性好等优势成为近年来医学超声成像领域研究的热点。但由于超声的衰减随频率增加呈指数级升高,导致高频超声信号幅值小,图像信噪比低。为了增强高频超声成像的信噪比,近年来编码发射(又称编码激励)技术得到了越来越多的研究和应用。文章对近几年国内外编码发射技术在医学高频超声成像方面的应用和研究进展进行了综述,重点分析了Chirp码、巴克(Barker)码和格雷(Golay)码3种主要编码发射技术在高频超声成像方面应用的优缺点,并综合对比了各种编码发射技术在高频成像方面的应用前景。High frequency ultrasound imaging is a hotspot in medical ultrasound imaging due to its high resolution and good real-time performance.However,the attenuation of ultrasound increases exponentially with the frequency,the amplitude of high-frequency ultrasonic signal is usually small and the signal-to-noise ratio of image is low.In order to enhance the signal-to-noise ratio(SNR)of high frequency ultrasound imaging,in recent years,the encoding transmission techniques have been increasingly studied and applied.In this paper,the encoding transmission techniques in the applications of high frequency ultrasound imaging are summarized.By reviewing the recent research progress of different encoding transmission techniques both at home and abroad,three main techniques with Chirp code,Barker code and Golay code in high frequency ultrasound imaging are emphatically analyzed.Also,the application prospects of various encoding transmission techniques in medical high frequency imaging are compared.

关 键 词：高频超声成像 编码发射 Chirp码 巴克(Barker)码 格雷(Golay)码 

分 类 号：TB559[理学—物理]