TY - JOUR
T1 - A reconstruction algorithm of magnetoacoustic tomography with magnetic induction for an acoustically inhomogeneous tissue
AU - Zhou, Lian
AU - Zhu, Shanan
AU - He, Bin
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2014/6
Y1 - 2014/6
N2 - Magnetoacoustic tomography with magnetic induction (MAT-MI) is a noninvasive electrical conductivity imaging approach that measures ultrasound wave induced by magnetic stimulation, for reconstructing the distribution of electrical impedance in a biological tissue. Existing reconstruction algorithms for MAT-MI are based on the assumption that the acoustic properties in the tissue are homogeneous. However, the tissue in most parts of human body has heterogeneous acoustic properties, which leads to potential distortion and blurring of small buried objects in the impedance images. In this study, we proposed a new algorithm for MAT-MI to image the impedance distribution in tissues with inhomogeneous acoustic speed distributions. With a computer head model constructed from MR images of a human subject, a series of numerical simulation experiments were conducted. The present results indicate that the inhomogeneous acoustic properties of tissues in terms of speed variation can be incorporated in MAT-MI imaging.
AB - Magnetoacoustic tomography with magnetic induction (MAT-MI) is a noninvasive electrical conductivity imaging approach that measures ultrasound wave induced by magnetic stimulation, for reconstructing the distribution of electrical impedance in a biological tissue. Existing reconstruction algorithms for MAT-MI are based on the assumption that the acoustic properties in the tissue are homogeneous. However, the tissue in most parts of human body has heterogeneous acoustic properties, which leads to potential distortion and blurring of small buried objects in the impedance images. In this study, we proposed a new algorithm for MAT-MI to image the impedance distribution in tissues with inhomogeneous acoustic speed distributions. With a computer head model constructed from MR images of a human subject, a series of numerical simulation experiments were conducted. The present results indicate that the inhomogeneous acoustic properties of tissues in terms of speed variation can be incorporated in MAT-MI imaging.
KW - Acoustic inhomogeneity
KW - bioimpedance
KW - electrical impedance imaging
KW - magnetoacoustic imaging
KW - magnetoacoustic tomography with magnetic induction (MAT-MI)
UR - http://www.scopus.com/inward/record.url?scp=84901278134&partnerID=8YFLogxK
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U2 - 10.1109/TBME.2014.2304494
DO - 10.1109/TBME.2014.2304494
M3 - Article
C2 - 24845284
AN - SCOPUS:84901278134
VL - 61
SP - 1739
EP - 1746
JO - IEEE Transactions on Biomedical Engineering
JF - IEEE Transactions on Biomedical Engineering
SN - 0018-9294
IS - 6
M1 - 6731516
ER -