COMPUTATIONAL FRAMEWORK FOR APPLYING ELECTRICAL IMPEDANCE TOMOGRAPHY TO HEAD IMAGING

被引:11
作者
Candiani, Valentina [1 ]
Hannukainen, Antti [1 ]
Hyvonen, Nuutti [1 ]
机构
[1] Aalto Univ, Dept Math & Syst Anal, FI-00076 Aalto, Finland
基金
芬兰科学院;
关键词
electrical impedance tomography; inaccurate measurement model; computational head model; shape derivatives; principal components; detection of stroke; ELECTRODE CONTACT IMPEDANCES; INVERSE CONDUCTIVITY PROBLEM; SIMULTANEOUS RECONSTRUCTION; DOMAIN BOUNDARY; MODELING ERRORS; SHAPE; TISSUES;
D O I
10.1137/19M1245098
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
This work introduces a computational framework for applying absolute electrical impedance tomography to head imaging without accurate information on the head shape or the electrode positions. A library of 50 heads is employed to build a principal component model for the typical variations in the shape of the human head, which leads to a relatively accurate parametrization for head shapes with only a few free parameters. The estimation of these shape parameters and the electrode positions is incorporated in a regularized Newton-type output least squares reconstruction algorithm. The presented numerical experiments demonstrate that strong enough variations in the internal conductivity of a human head can be detected by absolute electrical impedance tomography even if the geometric information on the measurement configuration is incomplete to an extent that is to be expected in practice.
引用
收藏
页码:B1034 / B1060
页数:27
相关论文
共 40 条
  • [1] A NEURAL-NETWORK IMAGE-RECONSTRUCTION TECHNIQUE FOR ELECTRICAL-IMPEDANCE TOMOGRAPHY
    ADLER, A
    GUARDO, R
    [J]. IEEE TRANSACTIONS ON MEDICAL IMAGING, 1994, 13 (04) : 594 - 600
  • [2] [Anonymous], 1999, P 11 SCAND C IM AN S
  • [3] [Anonymous], ANAL MINING, DOI DOI 10.1007/S13278-012-0093-5
  • [4] [Anonymous], 1997, THESIS
  • [5] Reproducible 3D printed head tanks for electrical impedance tomography with realistic shape and conductivity distribution
    Avery, James
    Aristovich, Kirill
    Low, Barney
    Holder, David
    [J]. PHYSIOLOGICAL MEASUREMENT, 2017, 38 (06) : 1116 - 1131
  • [6] Errors in reconstruction of resistivity images using a linear reconstruction technique
    Barber, D.C.
    Brown, B.H.
    [J]. Clinical Physics and Physiological Measurement, 1988, 9 (SUPPL. A): : 101 - 104
  • [7] APPLIED POTENTIAL TOMOGRAPHY
    BARBER, DC
    BROWN, BH
    [J]. JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1984, 17 (09): : 723 - 733
  • [8] Electrical impedance tomography
    Borcea, L
    [J]. INVERSE PROBLEMS, 2002, 18 (06) : R99 - R136
  • [9] Data errors and reconstruction algorithms in electrical impedance tomography
    Breckon, W.R.
    Pidcock, M.K.
    [J]. Clinical Physics and Physiological Measurement, 1988, 9 (SUPPL. A): : 105 - 109
  • [10] Electrical impedance tomography
    Cheney, M
    Isaacson, D
    Newell, JC
    [J]. SIAM REVIEW, 1999, 41 (01) : 85 - 101