Conductivity images of biological tissue phantoms using a 3.0 tesla MREIT system

Author

Woo, E.J. ; Lee, S.Y. ; Seo, J.K. ; Kwon, O. ; Oh, S.H. ; Lee, B.I.

Author_Institution

Dept. of Biomed. Eng., Kyung Hee Univ., Seoul, South Korea

Volume

1

fYear

2004

fDate

1-5 Sept. 2004

Firstpage

1287

Lastpage

1289

Abstract

We present cross-sectional conductivity images of a biological tissue phantom obtained by using a 3.0 Tesla magnetic resonance electrical impedance tomography (MREIT) system. Inside the cylindrical phantom with 140 mm diameter and 140 mm height, biological tissues such as bovine tongue and liver, porcine muscle, and chicken breast were placed within an agar gelatin. Injecting current of 480 mA·ms into the tissue phantom, we measured the z-component B_z of the induced magnetic flux density B=(B_x, B_y, B_z). Using the harmonic B_z algorithm, we reconstructed cross-sectional conductivity images from the measured B_z data. Reconstructed images clearly distinguish different tissues in terms of both their shapes and conductivity values.

Keywords

bioelectric phenomena; biomedical MRI; biomedical measurement; electric impedance imaging; gelatin; image reconstruction; liver; medical image processing; muscle; phantoms; 140 mm; 3.0 T; agar gelatin; biological tissue phantoms; bovine tongue; chicken breast; harmonic B/sub z/ algorithm; image conductivity; image reconstruction; liver; magnetic resonance electrical impedance tomography system; porcine muscle; z-component B/sub z/ measurement; Biological tissues; Bovine; Conductivity; Image reconstruction; Imaging phantoms; Impedance; Liver; Magnetic resonance; Tomography; Tongue; MREIT; conductivity image; tissue phantom;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-8439-3

Type

conf

DOI

10.1109/IEMBS.2004.1403406

Filename

1403406