Hatle L
Ultrasound Med Biol. 1984 Mar-Apr;10(2):225-37. doi: 10.1016/0301-5629(84)90221-7.
With continuous wave (CW) Doppler the maximal velocity in intracardiac jets can be recorded and simultaneous imaging makes the localization of these jets easier and unambiguous. The image may indicate the angle to the velocity, but the Doppler signal should be used to obtain the smallest angle and the highest velocity. Corrections for an assumed angle should be avoided since this may cause overestimation. With the maximal velocity a pressure drop can be calculated across obstructions and between chambers in regurgitations and shunts. The combined anatomic and haemodynamic information obtained with simultaneous two-dimensional echo and CW Doppler provides a good noninvasive assessment of most congenital and valvular lesions, including prosthetic valves.
使用连续波（CW）多普勒可记录心内血流束的最大速度，同时成像能使这些血流束的定位更简单且明确。图像可显示血流速度的角度，但应使用多普勒信号获取最小角度和最高速度。应避免对假定角度进行校正，因为这可能导致高估。利用最大速度可计算梗阻部位以及反流和分流时各腔室间的压力阶差。二维超声心动图和CW多普勒同时提供的解剖学和血流动力学综合信息，能对大多数先天性和瓣膜性病变（包括人工瓣膜）进行良好的无创评估。
