ASA 127th Meeting M.I.T. 1994 June 6-10

2pBV6. How accurate are volume flow measurements using Doppler ultrasound from commercial systems?

Andrew J. Winkler

Junru Wu

Dept. of Phys., Univ. of Vermont, Burlington, VT 05405

The accuracy of volume flow measurements using Doppler ultrasound was tested on a calibrated volume flow phantom for several commercial systems (ATL Ultramark4 and Ultramark9, Hewlett-Packard Sonos 1000, Quantum Quad1 and Acuson 128). The phantom consists of a plastic tubing (inner diameter: 0.64 cm) running through a rectangular plastic container filled with gelatin-based tissue-mimicking material. Solutions of glycerol, water, and cellulose powder mixture, whose viscosity was 5 cp at 25 (degrees)C, were circulated through the tubing with a variable speed roller pump. The preliminary results showed that the volume flow measured by the above-mentioned commercial systems were overestimated by 25%--50%.