Clinical blood flow measurements using diffraction-grating transducers

Author

Vilkomerson, D. ; Lyons, D. ; Chilipka, T. ; Delamere, M. ; Lopath, P. ; Palanchon, P. ; Shung, K.K.

Author_Institution

EchoCath Inc., Princeton, NJ, USA

Volume

2

fYear

1998

fDate

1998

Firstpage

1501

Abstract

Changing the phase or frequency of the signal driving a diffraction-grating transducer produces beams at known, multiple angles; these multiple angle beams can be used to make angle-independent Doppler measurements. This paper addresses three questions in developing a diffraction-grating instrument for measuring blood flow: how efficient and broadband can these transducers be, how close can such transducers be placed to blood vessels, and can the Doppler spectrum shape be used to determine the velocity profile

Keywords

Doppler measurement; biomedical transducers; biomedical ultrasonics; blood flow measurement; finite element analysis; ultrasonic transducers; Doppler spectrum shape; FEA; angle-independent Doppler measurements; clinical blood flow measurements; diffraction-grating transducers; limited diffraction beam; multiple angle beams; transducer design; velocity profile; Blood flow; Blood vessels; Diffraction; Doppler measurements; Fluid flow measurement; Frequency; Instruments; Shape measurement; Transducers; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.765229

Filename

765229