TY - JOUR
T1 - Rotational magneto-acousto-electric tomography (MAET)
T2 - Theory and experimental validation
AU - Kunyansky, L.
AU - Ingram, C. P.
AU - Witte, R. S.
N1 - Publisher Copyright:
© 2017 Institute of Physics and Engineering in Medicine.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/3/21
Y1 - 2017/3/21
N2 - We present a novel two-dimensional (2D) MAET scanner, with a rotating object of interest and two fixed pairs of electrodes. Such an acquisition scheme, with our novel reconstruction techniques, recovers the boundaries of the regions of constant conductivity uniformly well, regardless of their orientation. We also present a general image reconstruction algorithm for the 2D MAET in a circular chamber with point-like electrodes immersed into the saline surrounding the object. An alternative linearized reconstruction procedure is developed, suitable for recovering the material interfaces (boundaries) when a non-ideal piezoelectric transducer is used for acoustic excitation. The work of the scanner and the linearized reconstruction algorithm is demonstrated using several phantoms made of high-contrast materials and a biological sample.
AB - We present a novel two-dimensional (2D) MAET scanner, with a rotating object of interest and two fixed pairs of electrodes. Such an acquisition scheme, with our novel reconstruction techniques, recovers the boundaries of the regions of constant conductivity uniformly well, regardless of their orientation. We also present a general image reconstruction algorithm for the 2D MAET in a circular chamber with point-like electrodes immersed into the saline surrounding the object. An alternative linearized reconstruction procedure is developed, suitable for recovering the material interfaces (boundaries) when a non-ideal piezoelectric transducer is used for acoustic excitation. The work of the scanner and the linearized reconstruction algorithm is demonstrated using several phantoms made of high-contrast materials and a biological sample.
KW - Lorentz force tomography
KW - electric impedance tomography
KW - imaging of conductivity
KW - lead currents
KW - magneto-acousto-electric tomography
KW - synthetic transducer
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U2 - 10.1088/1361-6560/aa6222
DO - 10.1088/1361-6560/aa6222
M3 - Article
C2 - 28323633
AN - SCOPUS:85016950951
VL - 62
SP - 3025
EP - 3050
JO - Physics in Medicine and Biology
JF - Physics in Medicine and Biology
SN - 0031-9155
IS - 8
ER -