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Proceedings Paper

Characterization of various tissue mimicking materials for medical ultrasound imaging
Author(s): Audrey Thouvenot; Tamie Poepping; Terry M. Peters; Elvis C. S. Chen
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Paper Abstract

Tissue mimicking materials are physical constructs exhibiting certain desired properties, which are used in machine calibration, medical imaging research, surgical planning, training, and simulation. For medical ultrasound, those specific properties include acoustic propagation speed and attenuation coefficient over the diagnostic frequency range. We investigated the acoustic characteristics of polyvinyl chloride (PVC) plastisol, polydimethylsiloxane (PDMS), and isopropanol using a time-of-light technique, where a pulse was passed through a sample of known thickness contained in a water bath. The propagation speed in PVC is approximately 1400ms-1 depending on the exact chemical composition, with the attenuation coefficient ranging from 0:35 dB cm-1 at 1MHz to 10:57 dB cm-1 at 9 MHz. The propagation speed in PDMS is in the range of 1100ms-1, with an attenuation coefficient of 1:28 dB cm-1 at 1MHz to 21:22 dB cm-1 at 9 MHz. At room temperature (22 °C), a mixture of water-isopropanol (7:25% isopropanol by volume) exhibits a propagation speed of 1540ms-1, making it an excellent and inexpensive tissue-mimicking liquid for medical ultrasound imaging.

Paper Details

Date Published: 4 April 2016
PDF: 9 pages
Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 97835E (4 April 2016); doi: 10.1117/12.2218160
Show Author Affiliations
Audrey Thouvenot, Institut Superieur d'Ingenieurs de Franche Comte (France)
Tamie Poepping, Western Univ. (Canada)
Terry M. Peters, Robarts Research Institute, Western Univ. (Canada)
Elvis C. S. Chen, Robarts Research Institute, Western Univ. (Canada)


Published in SPIE Proceedings Vol. 9783:
Medical Imaging 2016: Physics of Medical Imaging
Despina Kontos; Thomas G. Flohr, Editor(s)

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