论文部分内容阅读
多普勒超声心动图(dopplcr echocardiography,以下简称DE)是利用超声多普勒效应来探测心脏和大血管中血流动力学的一种新兴非侵入性检查技术。80年代以来,DE技术有了极为迅速的发展,从早期的连续波式多普勒发展到脉冲式多普勒、高脉冲重复频率式多普勒、多点选通式多普勒和彩色多普勒血流显象。多普勒仪器也从早期的单一多普勒超声仪发
Doppler echocardiography (dopplcr echocardiography, hereinafter referred to as DE) is the use of ultrasound Doppler effect to detect cardiac and blood vessels in the hemodynamics of a new non-invasive inspection technology. Since the 1980s, there has been a very rapid development of DE technology. From the early continuous wave Doppler to pulsed Doppler, high pulse repetition frequency Doppler, multi-point selective Doppler and color multi Pulmonary blood flow imaging. Doppler instruments are also available from earlier single Doppler ultrasound