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%. [
出处
《中国工程科学》
2000年第1期41-46,共6页
Strategic Study of CAE
关键词
肺动肺压
无创伤估测
临床诊断
超声
心电
pulmonary artery pressure
non\|invasive evaluation
wavelet
de\|noising
envelope curve
characteristic point
