Title :
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
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 Bz of the induced magnetic flux density B=(Bx, By, Bz). Using the harmonic Bz algorithm, we reconstructed cross-sectional conductivity images from the measured Bz 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;
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
DOI :
10.1109/IEMBS.2004.1403406
