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Effect of tank liquid acoustic velocity on Doppler string phantom measurements.
Author(s) -
Goldstein A
Publication year - 1991
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1991.10.3.141
Subject(s) - transducer , doppler effect , imaging phantom , calibration , acoustics , flow velocity , range (aeronautics) , string (physics) , medicine , optics , flow (mathematics) , mechanics , physics , materials science , quantum mechanics , astronomy , composite material
The quantitative effects of degassed water in string phantom tank Doppler measurements are derived theoretically. The Doppler parameter measurements considered are range gate registration, range gate profile, image flow angle measurements, and velocity calculation. The equipment velocity calculation is demonstrated to have an appreciable error which is due to the water acoustic velocity and the transducer acquisition geometry. A velocity calibration technique is proposed that only needs a simple multiplicative factor to compensate for the water in the tank.