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M型超声心动图和B型心脏超声显像(二维超声心动图)已为心血管疾病的诊断开辟了一个崭新的无创伤途径。但是,它们还不能直接检测心脏血管内的血流状态。多普勒超声、特别是脉冲多普勒超声技术近年来发展迅速,它为研究血流和诊断各种先天性和后天获得性心脏血管疾病所引起的血液动力学改变增添了一个有效工具,从而使心脏超声诊断技术进一步完善。现就脉冲多普勒超声基本原理及其临床应用作一综合介绍。
M-mode echocardiography and B-mode echocardiography (2D echocardiography) have opened up a whole new and noninvasive way to the diagnosis of cardiovascular disease. However, they are not yet able to directly detect the state of blood flow in the heart vessels. Doppler ultrasound, particularly pulsed Doppler ultrasound, has developed rapidly in recent years and adds an effective tool to study blood flow and to diagnose hemodynamic changes caused by various congenital and acquired acquired cardiovascular diseases. The heart ultrasound diagnostic technology to further improve. Now on the basic principles of pulsed Doppler ultrasound and its clinical application for a comprehensive introduction.