Range-Doppler detection in a pulsed ultrasound flowmeter has been performed using a SAW-CZT spectrum analyzer, providing adequate speed for real-time sequential Doppler analysis in a large number of range cells. Recent work is reported, directed at making the system clinically experimentable in vivo. Impressive real-time images of blood flow profiles in major human vessels have been obtained. Doppler signal output at 3 MHz rate from the SAW-CZT spectrum analyzer has been digitally processed to extract the mean velocity for each range cell. A microprocessor has been used to estimate the dynamic evolution of blood flow in detail.
Range-Doppler flowmeter for imaging of blood velocity profiles in arteries / P. TORTOLI; F. ANDREUCCETTI; G. MANES; C. ATZENI. - STAMPA. - (1985), pp. 959-962. (Intervento presentato al convegno 1985 IEEE Ultrasonic Symposium tenutosi a San Francisco, California, USA nel 16-18 Ottobre 1985).
Range-Doppler flowmeter for imaging of blood velocity profiles in arteries
TORTOLI, PIERO;MANES, GIANFRANCO;ATZENI, CARLO
1985
Abstract
Range-Doppler detection in a pulsed ultrasound flowmeter has been performed using a SAW-CZT spectrum analyzer, providing adequate speed for real-time sequential Doppler analysis in a large number of range cells. Recent work is reported, directed at making the system clinically experimentable in vivo. Impressive real-time images of blood flow profiles in major human vessels have been obtained. Doppler signal output at 3 MHz rate from the SAW-CZT spectrum analyzer has been digitally processed to extract the mean velocity for each range cell. A microprocessor has been used to estimate the dynamic evolution of blood flow in detail.
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