title: A combined transcutaneous pulse-echo and Doppler ultrasonic technique for the measurement of brachial artery peak velocity.
abstract: The Parks Model 806 Doppler blood velocity meter was shown to have a linear voltage output with respect to input frequencies of up to 5kHz. It was linear and accurate to velocities of 70 cms-1 at angles of 50 degrees and 60 degrees to the flow, on a steady flow rig, and shown to have a linear frequency response to 9Hz. A combined pulse echo and Doppler transducer system has been developed allowing quantitation of arterial peak velocity.
mesh_terms: D001783:Blood Flow Velocity; D001916:Brachial Artery; D004301:Doppler Effect; D009862:Online Systems; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography