在超声多普勒血流测量技术中最早出现的是连续波多普勒血流计,它可以在皮肤外无损伤地对血流作定性测量。不久,又出现了脉冲超声多普勒系统(图1),它能提供距离信息。最近又出现了各种定量检测技术。本文将着重介绍国外方向性血流检测技术和频谱处理技术的进展。当然,这些技术同样可用于连续波超声多普勒。 The earliest appearance of ultrasound Doppler flow measurement technology is the continuous wave Doppler flowmeter, which can qualitatively measure blood flow without damage outside the skin. Soon there was a pulsed ultrasound Doppler system (Figure 1) that provided distance information. Recently there have been various quantitative detection techniques. This article will highlight the progress of foreign directional blood flow detection techniques and spectrum processing techniques. Of course, these techniques are equally applicable to continuous wave Doppler ultrasound.