Abstract:
The development of an ultrcisonic system for the transcutaneous measurement of blood velocity in rrnjor veins and arteries is described. The techniques used allow range discrimination of moving targets, together with a measurement of both positive and negative radial veloaity components. Cliniaal measurements have been rrnde of the blood velocity in the external iliac vessels of pregnant patients, and typical results are presented in the form of dynamic power spectral analyses of the Doppler shifted signals.
