The invention uses a transducer and ultrasound system to form and direct ultrasound beams through the blood stream that will detect the Doppler shift in frequency between the beams and the return echo off the blood. The transducer can be secured onto the surface of the patient's skin with a transducer...http://www.google.es/patents/US7857763?utm_source=gb-gplus-sharePatente US7857763 - Automatic signal-optimizing transducer assembly for blood flow measurement
Automatic signal-optimizing transducer assembly for blood flow measurement
