Weir, A. J., Sayer, R., Wang, C.-X. and Parks, S. (2015) A Wall-Less Poly(Vinyl Alcohol) Cryogel Flow Phantom with Accurate Scattering Properties for Transcranial Doppler Ultrasound Propagation Channels Analysis. In: EMBC 2015: 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Milan, Italy, 25-29 Aug 2015, pp. 2709-2712. ISBN 9781424492701 (doi: 10.1109/EMBC.2015.7318951)
Full text not currently available from Enlighten.
Abstract
Medical phantoms are frequently required to verify image and signal processing systems, and are often used to support algorithm development for a wide range of imaging and blood flow assessments. A phantom with accurate scattering properties is a crucial requirement when assessing the effects of multi-path propagation channels during the development of complex signal processing techniques for Transcranial Doppler (TCD) ultrasound. The simulation of physiological blood flow in a phantom with tissue and blood equivalence can be achieved using a variety of techniques. In this paper, poly (vinyl alcohol) cryogel (PVA-C) tissue mimicking material (TMM) is evaluated in conjunction with a number of potential scattering agents. The acoustic properties of the TMMs are assessed and an acoustic velocity of 1524ms-1, an attenuation coefficient of (0:49) × 10-4fdBm1Hz-1, a characteristic impedance of (1.72) × 106Kgm-2s-1 and a backscatter coefficient of (1.12) × 10-28f4m-1Hz-4sr-1 were achieved using 4 freeze-thaw cycles and an aluminium oxide (Al2O3) scattering agent. This TMM was used to make an anatomically realistic wall-less flow phantom for studying the effects of multipath propagation in TCD ultrasound.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Weir, Mr Alexander and Parks, Dr Stuart |
| Authors: | Weir, A. J., Sayer, R., Wang, C.-X., and Parks, S. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing |
| ISSN: | 1094-687X |
| ISBN: | 9781424492701 |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details