基于超声多普勒技术的气栓检测研究  

Research on Gas Embolism Detection Based on Ultrasonic Doppler Technology

作　　者：戴鹤锋 李晓高 沈国浪 朱文 王兴国 DAI Hefeng;LI Xiaogao;SHEN Guolang;ZHU Wen;WANG Xingguo(School of Mechanical and Electronic Engineering,Jingdezhen Ceramic University,Jingdezhen 333403,China)

机构地区：[1]景德镇陶瓷大学机械电子工程学院,江西景德镇333403

出　　处：《现代信息科技》2023年第13期131-135,共5页Modern Information Technology

基　　金：国家自然科学基金(52265020);大学生创新训练计划项目(202110408017)。

摘　　要：针对人体血流中的气体栓子难以被识别和测量的问题,提出一种气栓超声多普勒检测方法。利用气栓和红细胞具有不同声学特征,分析基于自相关技术提取的特征参数,实现气栓的识别与特征检测。进行气栓仿真物理实验,设定中心频率后以不同的入射角发射超声信号,分析实验获得的流体速度分布与多普勒振幅数据并求解最优化检测参数以提高气栓检测精确度。实验结果表明,当入射角增大时,气栓和红细胞的速度分布、测量区间和血管与换能器之间的声衰减也增加。通过分析发现入射角为60°时检测效果最佳,该方法对血液气栓的临床检测有重要应用价值。To address the problem that gas embolism in human blood flow are difficult to be identified and measured,an ultrasonic Doppler detection method for gas embolism is proposed.Using the different acoustic characteristics of gas embolism and red blood cells,the characteristic parameters extracted based on autocorrelation technology are analyzed to realize the identification and feature detection of gas embolism.The gas embolism simulation physics experiment is carried out.After setting the center frequency,the ultrasonic signal is transmitted at different incident angles.The fluid velocity distribution and Doppler amplitude data obtained by the experiment are analyzed and the optimal detection parameters are solved to improve the detection accuracy of the gas embolism.The experimental results show that when the incident angle increases,the velocity distribution of the air embolism and the red blood cells,the measurement interval and the sound attenuation between the blood vessel and the transducer also increase.Through the analysis,it is found that the detection effect is the best when the incident angle is 60°.This method has important application value for the clinical detection of blood gas embolism.

关 键 词：气体栓子 超声多普勒 入射角 血流速度分布 多普勒振幅 

分 类 号：TN911.6[电子电信—通信与信息系统]