具有倾角传感的乳腺电阻抗扫描检测探头设计  

Design of breast electrical impedance scanning detection probe with angle sensing function

作　　者：陈盟 李靖[2] 王瑞青 董秀珍 季振宇 CHEN Meng;LI Jing;WANG Rui-qing;DONG Xiu-zhen;JI Zhen-yu(Department of Medical Electronic Engineering,School of Biomedical Engineering,Air Force Medical University,Xi'an 710032,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]空军军医大学军事生物医学工程学系医学电子工程教研室,西安710032 [2]西北工业大学机械工程学院,西安710072

出　　处：《医疗卫生装备》2020年第9期15-20,共6页Chinese Medical Equipment Journal

基　　金：国家自然科学基金面上项目(81671846);军委科技委基础加强计划技术领域基金项目(2019-JCJQ-JJ-090)。

摘　　要：目的:研制具有倾角传感的乳腺电阻抗扫描(electrical impedance scanning,EIS)检测探头,实现在EIS检测过程中获取检测探头的倾角信息。方法:建立乳腺EIS仿真模型,研究探头倾角对检测电极面电流密度分布的影响。以三轴加速度传感器为核心器件设计倾角检测模块,利用最小二乘拟合方法对输出角度进行标定。将倾角检测模块集成于原有的乳腺EIS检测探头内,配合相应的软件程序,实现对探头倾角的实时检测。结果:在-45°~45°范围内,具有倾角传感的乳腺EIS检测探头所测量的角度误差可控制在0.05°~1.08°之内,角度检测精度在1.1%~1.5%之内,可满足EIS实际应用中的检测需求。结论:具有倾角传感的乳腺EIS检测探头符合设计要求,有望对提升EIS检测精度发挥作用。Objective To develop an electrical impedance scanning(EIS)probe with angle sensing function for detecting inclination of the plane electrode array during EIS detection.Methods A simulation model of breast EIS was established to study the influence of probe angle on the current density distribution of the detection electrodes.The angle detection module was designed with triaxial acceleration sensor as the core device,and the output angle was calibrated by the least square fitting method.The angle detection module could be integrated in the EIS probe to realize real-time detection of the probe angle when combined with the corresponding software program.Results The angle error of the EIS probe angle detection module could be restricted within 0.05°to 1.08°in the angle range from-45°to 45°,and the angle detection accuracy was within 1.1%to 1.5%,which met the needs of EIS practical application.Conclusion EIS probe with angle sensing function scarifies the desired requirements,and is expected to contribute to improving the clinical operation of EIS and the detection accuracy of EIS.

关 键 词：乳腺 电阻抗扫描 检测探头 探头倾角 倾角检测 

分 类 号：R318[医药卫生—生物医学工程] R197.39[医药卫生—基础医学]