An efficient impedance method for induced field evaluation based on a stabilized Bi-conjugate gradient algorithm

Wang, H., Liu, F., Xia, L and Crozier, S. (2008) An efficient impedance method for induced field evaluation based on a stabilized Bi-conjugate gradient algorithm. Physics in Medicine and Biology, 53 22: 6363-6375. doi:10.1088/0031-9155/53/22/007


Author Wang, H.
Liu, F.
Xia, L
Crozier, S.
Title An efficient impedance method for induced field evaluation based on a stabilized Bi-conjugate gradient algorithm
Journal name Physics in Medicine and Biology   Check publisher's open access policy
ISSN 0031-9155
Publication date 2008-11-01
Year available 2008
Sub-type Article (original research)
DOI 10.1088/0031-9155/53/22/007
Open Access Status Not yet assessed
Volume 53
Issue 22
Start page 6363
End page 6375
Total pages 13
Editor Webb, S.
Place of publication United Kingdom
Publisher Institute of Physics Publishing
Language eng
Subject C1
970109 Expanding Knowledge in Engineering
090399 Biomedical Engineering not elsewhere classified
Abstract This paper presents a stabilized Bi-conjugate gradient algorithm (BiCGstab) that can significantly improve the performance of the impedance method, which has been widely applied to model low-frequency field induction phenomena in voxel phantoms. The improved impedance method offers remarkable computational advantages in terms of convergence performance and memory consumption over the conventional, successive over-relaxation (SOR)-based algorithm. The scheme has been validated against other numerical/analytical solutions on a lossy, multilayered sphere phantom excited by an ideal coil loop. To demonstrate the computational performance and application capability of the developed algorithm, the induced fields inside a human phantom due to a low-frequency hyperthermia device is evaluated. The simulation results show the numerical accuracy and superior performance of the method.
Keyword Engineering, Biomedical
Radiology, Nuclear Medicine & Medical Imaging
Engineering
Radiology, Nuclear Medicine & Medical Imaging
ENGINEERING, BIOMEDICAL
RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Thu, 16 Apr 2009, 20:07:07 EST by Ms Kimberley Nunes on behalf of School of Information Technol and Elec Engineering