基于PC机的冠状动脉血管阻抗估计  

PC-based Resistance Estimation for the Coronary Artery

作　　者：罗忠池[1] 汪源源[1] 王威琪[1] 

机构地区：[1]复旦大学电子工程系,上海200433

出　　处：《仪器仪表学报》2002年第z1期182-183,共2页Chinese Journal of Scientific Instrument

基　　金：上海市青年科技启明星计划跟踪资助

摘　　要：利用 PC机和图像、信号采集设备 ,建立冠状动脉血管阻抗的测量方法。从血管内超声和血压检测仪器采集冠状动脉内的图像、血流多普勒信号和血压信息 ,使用动态轮廓模型从血管内的视频超声图像测量出管腔的截面积曲线 ,使用小波奇异点检测法提取多普勒信号的最大频率曲线 ,继而算出相应的平均频率曲线 ,从而结合管内的血压信息 。A PC based method is presented to estimate the resistance of the coronary artery.In this method, intra vascular ultrasound (IVUS) images,intra coronary Doppler and blood pressure signals from the medical ultrasound and pressure instruments,are respectively sampled into a PC using the image and signal acquisition cards and the corresponding softwares.With the ECG as the synchronization pulse,the resistance of the coronary artery can be figured out.Here a modified active contour model is used to estimate the lumen area of the coronary artery from IVUS images,and a wavelet based singularity detection method is applied to extract the maximal frequency curve from the Doppler spectrum followed by the calculation of the mean frequency curve.With the blood pressure curve detected,the resistance of the coronary artery can be estimated.

关 键 词：血管阻抗 血管内超声 动态轮廓检测 多普勒 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]