皮肤囊肿成像用高频超声换能器及扫描方法  

High Frequency Ultrasonic Transducer and Scanning Method for Ultrasound Imaging of Skin Cyst

作　　者：周洁文 李晓兵 丁伟艳 姜立新 聂生东[1] 陈兴飞 李昕伦 苏一凡 赵祥永 ZHOU Jiewen;LI Xiaobing;DING Weiyan;JIANG Lixin;NIE Shengdong;CHEN Xingfei;LI Xinlun;SU Yifan;ZHAO Xiangyong(School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology,Shanghai 200093,China;Ultrasonography Dept. Shanghai Renji Hospital,School of Medicine,Shanghai Jiaotong University,Shanghai 200025,China;School of Mathematics and Physics,Shanghai Normal University,Shanghai 200233,China)

机构地区：[1]上海理工大学医疗器械与食品学院,上海200093 [2]上海交通大学医学院附属仁济医院超声科,上海200025 [3]上海师范大学数理学院,上海200233

出　　处：《压电与声光》2022年第1期134-138,共5页Piezoelectrics & Acoustooptics

基　　金：上海自然科学基金资助项目(19ZR1436200,19440760800)。

摘　　要：高频超声成像具有几十微米级的纵向分辨率,适用于皮肤等人体组织的微结构成像。该文针对皮肤囊肿等凸形的人体组织内部微结构,提出了一种适用于凸形组织的非接触式弧形超声扫描成像方法,设计并制备了一款41.5 MHz的高频超声换能器。首先采用脉冲回波法对其性能进行系统表征,然后设计了凸形旋转扫描成像装置,并对凸形皮肤囊肿模型进行扫描、滤波、补偿等信号采集和处理,最终实现了高频超声成像。结果表明,此方法所用换能器纵向分辨率为50μm,能够对皮肤囊肿模型内部精细结构进行成像,这将促进相关临床医学和超声成像技术的发展。The high-frequency ultrasound imaging has a spatial resolution of tens of microns,which is suitable for microstructure imaging of human tissues such as skin.In this paper,aiming at the internal microstructure of convex human tissue such as skin cyst,a non-contact arc ultrasonic scanning imaging method suitable for convex tissue is proposed,and a 41.5 MHz high frequency ultrasonic transducer is designed and fabricated.First,the performance of the transducer is characterized by the pulse echo method,and a convex rotating scanning imaging device is designed.Then the signal acquisition and processing,such as scanning,filtering,compensating and so on,of the model of convex skin cyst was carried out,and finally the high frequency ultrasound imaging was realized.The results show that the proposed transducer has a longitudinal resolution of 50μm and can image the fine structure of the skin cyst model,which will promote the development of related clinical medicine and ultrasound imaging technology.

关 键 词：超声换能器 高频超声成像 皮肤囊肿 极坐标成像 

分 类 号：TN384[电子电信—物理电子学]