环形内窥镜超声换能器的研制  

Development of Endoscopic Ultrasound Radial Arrays

作　　者：陈燕[1] 周丹 林国豪[3] 吴锦川 戴吉岩[1] 罗豪甦[5] 陈王丽华[1] 

机构地区：[1]香港理工大学应用物理系 [2]深圳市理邦精密仪器股份有限公司,深圳518067 [3]香港理工大学电机工程系 [4]汕头市超声仪器研究所有限公司,汕头515041 [5]中国科学院上海硅酸盐研究所信息功能材料与器件研究中心,上海200050

出　　处：《中国医疗器械信息》2014年第4期6-10,共5页China Medical Device Information

基　　金：国家重点基础研究发展计划"973"项目(项目编号:2013CB632900)

摘　　要：本论文报道了当前环形内窥镜超声换能器的两种不同的制备方法以及其性能的表征。方法一为先采用切割薄片高性能压电PMN-PT单晶和其1~3复合材料制备平面阵列，然后将平面阵列卷曲成圆环形阵列。所制备的128阵元PMN-PT单晶阵列具有较宽带宽达78%，64阵元PMN-PT单晶/环氧1~3复合阵列带宽高达102%。方法二为旋转切割法，通过直接对带有匹配层和背衬材料的压电陶瓷管进行切割，制作不同尺寸及频率的环形超声内窥镜阵列。We report the fabrication and characterization of endoscopic ultrasound radial arrays transducers for medical imaging by two different methods. The ifrst approach is cal ed wrapping method, high-performance PMN-PT single crystal and PMN-PT/epoxy 1-3 composite plates are used as active elements. After bonded with backing and matching layers and being cut into arrays, transducers are wrapped across a metal tube to form the radial arrays. The bandwidth of the 128-element PMN-PT single crystal radial array and 64-element PMN-PT/epoxy 1-3 composite radial array transducers can achieved 78%and 102%, respectively. In the second method, the PZT tube was selected to fabricate the 50-element 14 MHz and 100-element 3 MHz radial arrays by a rotate-and-dice method. The results show that these two methods are feasible to fabricate radial arrays for endoscopic applications.

关 键 词：内窥镜超声换能器 环形阵列 制备方法 性能表征 

分 类 号：R445.1[医药卫生—影像医学与核医学]