High-frequency Doppler Ultrasound Flowmeter

A. Nowicki; W. Secomski; P. Karłowicz; G. Łypacewicz

Authors

A. Nowicki Ultrasonic Department, Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, Świętokrzyska 21
Poland
W. Secomski Ultrasonic Department, Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, Świętokrzyska 21
Poland
P. Karłowicz Ultrasonic Department, Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, Świętokrzyska 21
Poland
G. Łypacewicz Ultrasonic Department, Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, Świętokrzyska 21
Poland

Abstract

This paper discusses a new Doppler device for measuring blood flow in small vessels. The ultrasound frequency applied is 20MHz. Two different ultra:;ound probes were designed with transducer diameters of 0.9mm and 1.6mm. The transducers were located at the point of a catheter. As measured at 1.5mm depth, the lateral resolutions were 1mm and 1.7mm, respectively. The flowmeter is very sensitive. Compared with standard flowmeters (from 2 to 8MHz), signals from subcutaneous vessels are greater by 10-20dB.

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High-frequency Doppler Ultrasound Flowmeter

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