The Doppler-effect has made possible the ultrasonic registration of the flow in blood vessels, because ultrasonic sound is reflected from red moving red blood corpuscles. Doppler ultrasonic diagnostics – Doppler flow investigation – has become a very valuable aid particularly in neurology and neurosurgery. The velocity and the direction of the blood flow are shown on a monitor as a visible movement and in shifting colours. The method is frequently used to determine blood pressure in newborn infants and anyone in whom the sounds normally heard are difficult to hear.
- D. Callagan, T. Rowland, D. Goldman:
Ultrasonic Doppler observation of the fetal heart.
Obstetrics and Gynecology, Philadelphia, 1964, 23: 637-641.
- D. E. Strandness Jr, R. D. Schultz, D. S. Sumner, R. F. Rushmer:
Ultrasonic flow detection. A useful technic in the evaluation of peripheral vascular disease. American Journal of Surgery, New York, 1967, 113: 311-320.
- L. Pourcelot:
Clinical applications of Doppler instruments.
In: P. Perronneau, editor: Ultrasonic velocimetry. Application to blood flow studies in large vessels. Inserm, Paris 1974, 34: 213–240.