医学超声中音频多普勒信号的零极点分析法  

Zero-pole analysis method for audio Doppler signal in medical ultrasound

作　　者：汪源源[1] 王威琪[1] 蔡大卫[1] 吴瑞良[1] 

机构地区：[1]复旦大学,上海第一人民医院,复旦大学电子工程系

出　　处：《复旦学报（自然科学版）》1994年第5期533-539,共7页Journal of Fudan University：Natural Science

摘　　要：建立了超声多普勒血流信号的驱动点模型，分析音频多普勒信号的零极点随心动周期变化的轨迹，并提取相应的特征值，讨论了这些特征值与临床生理状况的联系．通过对临床采集到的病例信息的零极点分析，得到了零极点轨迹和特征值对病例诊断的一些标准，对临床血管疾病的无损诊断具有一定的意义．A model for Doppler ultrasound blood flow signals is proposed in this paper, with which zeroes, poles and some characteristic values of audio Dopplersignals can be obtained. The relationship between characteristic values and physiological states is discussed. From the experiments of zero-pole analysis for clinical audio Doppler signlas, it can be seen that zeroes, poles and characteristic values can be used to diagnose diseases in the clinic.

关 键 词：多普勒 零极点分析 超声波诊断 血管疾病 

分 类 号：R543.04[医药卫生—心血管疾病] R445.1[医药卫生—内科学]