肺动脉压无创伤估测系统及其应用价值研究  

A Non-invasive Evaluation System for Pulmonary Artery Pressure and its Application Value

作　　者：王威琪[1] 陈树宝[2] 汪源源[1] 刘斌[1] 张玉奇 余建国[1] 孙锟[2] 陈斯中[1] 

机构地区：[1]复旦大学电子工程系,上海200433 [2]上海第二医科大学新华医院,上海200093 [3]上海儿童医学中心,上海200120

出　　处：《中国工程科学》2000年第1期41-46,共6页Strategic Study of CAE

摘　　要：肺动脉压是临床诊断、生理研究的一项重要指标,常规采用有创伤的心导管术测量。文章提出了一种基于超声和心电的无创伤估测方法,研制了肺动脉压无创伤估测系统。文中报告了所用的关键技术要点,动物实验和临床试用。所用的关键技术是小波变换降噪;新型百分比法提取声谱包络;小波变换识别定位超声、心电信号特征点。经9条狗的动物实验和60例临床试用,与心导管术相关性在80%以上。Pulmonary artery pressure is an important parameter for clinical diagnosis and physiological research.It used to be measured by the traditional invasive method,cardiac catheterization. A non\|invasive method based on audio pulsed\|wave Doppler signal and ECG is presented and the noninvasive evaluation system is developed.The key techniques,animal experiment and clinical probation are described in this paper.The key techniques include:wavelet de\|noising,new percentile method as well as locating characteristic point with wavelet.According to the data obtained from animal experiments of 9 dogs and 60 cases,the relativity with cardiac catheterization exceeds 80%. [

关 键 词：肺动肺压 无创伤估测 临床诊断 超声 心电 

分 类 号：R443.5[医药卫生—诊断学]