Doppler ultrasound in the fetus: A review of current applications

With the recent introduction of Doppler pulsed and continuous wave as well as color‐flow mapping, assessment of blood velocity in the human fetus has added a new dimension to fetal assessment. Although investigators initially examined blood flow in the descending aorta and umbilical vein, there was a wide variation in normal values because of the difficulty of accurately measuring the area of the vessels, a requirement for computation of blood...