A Data Standardization and Reconstruction Method for Magnetic Induction Tomography

Article Preview

Abstract:

Magnetic induction tomography (MIT) is a biologic tomography technology, which is to obtain the conductivity distribution by detecting the data on the boundary of the imaging area based on the eddy current principle. The small impedance difference between biological tissues makes the eddy current weak, and it leads to a direct effect on the biological impedance measurement and imaging sensitivity. A measured data standardization method is presented in this paper for enhancing the measured data sensitivity, and combined with the back-projection reconstruction algorithm to get reconstruction image. It is applied to a variety of measurement and the simulation experiment based on the calculation results of finite-element methods. The reconstructed images indicate that the method can improve the image resolution and sensitivity, and which provides an effective data standardization and reconstruction algorithm for the magnetic induction tomography.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

560-565

Citation:

Online since:

January 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Griffiths H. Magnetic induction tomography [J]. Meas. Sci. Technol. 2001, 12(8): 1126-1131.

Google Scholar

[2] Johannes N, wald F, Sabine H. Contactless impedance measurement by magnetic induction-a possible method for investigation of brain impedance [J]. Physiol Meas, 1993, 14(4): 463-471.

DOI: 10.1088/0967-3334/14/4/007

Google Scholar

[3] Morris A, Giffiths H, Gough W. A numerical model for induction tomographic measurements in biological tissues [J]. Physiol Meas, 2001, 22(1): 113-119.

DOI: 10.1088/0967-3334/22/1/315

Google Scholar

[4] Korzhenevskii A V, Cherepenin V A. Magnetic induction tomography [J]. Commun. Tech. Electron, 1997; 42: 469 - 474.

Google Scholar

[5] Nevzat G, Gencer M, Nejat Tek. Electrical Conductivity Imaging via Contactless Measurements [J]. IEEE Transactions on medical imaging, 1999; 18: 617-627.

DOI: 10.1109/42.790461

Google Scholar

[6] Tozer J C, Ireland R H, Barker D C. Magnetic Impedance Tomography [J]. Annals of the New York Academy of Sciences. 1999; 873: 353-359.

DOI: 10.1111/j.1749-6632.1999.tb09483.x

Google Scholar

[7] Robert Merwa, Patricia Brunner, Andreas Missner, et al. Solution of the inverse problem of magnetic induction tomography (MIT) in silicio and in vitro [J]. Physiol. Meas, 2005; 26: 241-250.

DOI: 10.1088/0967-3334/26/2/023

Google Scholar

[8] Li Shijun, Qin Mingxin and Dong Xiuzhen 2002 Magnetic induction tomography and the methods of its experimental realization Foreign Medical Science(biomedical engineering fascicle) 25 161-64.

Google Scholar

[9] Merwa R, Hollaus K, Brandsttter B, et a1. Numerical solution of the general 3D eddy current problem for magnetic induction tomography(spectroscopy) [J]. Physiol. Meas, 2003, 24: 545-554.

DOI: 10.1088/0967-3334/24/2/364

Google Scholar