Measurement of temperature distribution using the current injection MRI

Author

Lee, S.Y. ; Khang, H.S. ; Hwang, J.S. ; Cho, M.H. ; Woo, E.J.

Author_Institution

Graduate Sch. of East-West Med. Sci., Kyung Hee Univ., Kyungki, South Korea

Volume

4

fYear

2001

fDate

2001

Firstpage

3196

Abstract

A new temperature distribution measurement method using the current injection MRI is proposed. Since electrical impedance of biological tissues is very sensitive to their temperature, formation of current density inside the tissues is strongly dependent on the temperature distribution inside the tissues when external current is applied to the tissues during the current injection MRI. Therefore, the phase change at the image domain has correlations with the temperature change inside the tissues. Both simulation and experimental results have shown that a small change of temperature distribution can be measured using the current injection MRI.

Keywords

bioelectric phenomena; biological tissues; biomedical MRI; biothermics; current density; temperature distribution; temperature measurement; biological tissues electrical tissues; current injection MRI; external current; image domain phase change; magnetic resonance imaging; medical diagnostic imaging; temperature distribution measurement; tissue temperature distribution; Biological tissues; Conductivity; Current density; Current measurement; Imaging phantoms; Magnetic resonance imaging; Space vector pulse width modulation; Temperature distribution; Temperature measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1019502

Filename

1019502