Title :
Beam distortion in Doppler ultrasound flow test rigs: measurement using a string phantom
Author :
Steel, R. ; Fish, P.J.
Author_Institution :
Sch. of Informatics, Univ. of Wales, Bangor, UK
Abstract :
The tube in flow rigs used for testing Doppler ultrasound instruments can attenuate and distort the beam and sample volume by refraction, reflection, absorption and mode conversion. The attenuation and degree of distortion has been measured by using a moving string test object and candidate tubes have been compared. Tubes of rubber, TFE-Teflon, Perspex, heatshrink and C-Flex have been tested leading to the choice of 0.8 mm wall C-Flex.
Keywords :
Doppler measurement; biomedical ultrasonics; blood flow measurement; 0.8 mm; C-Flex; Doppler ultrasound flow test rigs; Perspex; TFE-Teflon; beam distortion; candidate tubes; distortion degree; heatshrink; medical diagnostic technique; mode conversion; moving string test object; rubber; string phantom; Absorption; Attenuation; Distortion measurement; Fluid flow measurement; Imaging phantoms; Instruments; Optical reflection; Testing; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019531
