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Journal of Ultrasound in Medicine, Vol 10, Issue 3 141-148, Copyright © 1991 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Effect of tank liquid acoustic velocity on Doppler string phantom measurements

A. Goldstein
Department of Obstetrics & Gynecology, Wayne State University School of Medicine, Detroit, Michigan 48201.

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.




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Copyright © 1991 by the American Institute of Ultrasound in Medicine.