Title :
Feasibility of dual-frequency conductivity imaging using MREIT and MREPT
Author :
Minhas, Atul S. ; Kim, Young Tae ; Kim, Hyung Joong ; Woo, Eung Je ; Kim, Min-Oh ; Kim, Dong-Hyun ; Seo, Jin Keun
Author_Institution :
Dept. of Biomed. Eng., Kyung Hee Univ., Yongin, South Korea
Abstract :
Magnetic resonance electrical impedance tomography (MREIT) and magnetic resonance electrical property tomography (MREPT) are new medical imaging modalities capable of visualizing distributions of electrical properties inside an electrically conducting object such as the human body. MREIT provides conductivity images at frequencies below a few kHz by processing MR phase images subject to externally injected currents, while MREPT provides both conductivity and permittivity images at the Larmor frequency (128 MHz at 3 T) by processing B1 maps. In this paper, we present experimental results of both MREIT and MREPT and highlight their distinct features in probing and visualizing the same object.
Keywords :
bioelectric phenomena; biomedical MRI; electric impedance imaging; electrical conductivity; medical image processing; permittivity; B1 maps; Larmor frequency; MR phase image processing; MREIT; MREPT; dual-frequency conductivity imaging; electrically conducting object; frequency 128 MHz; magnetic flux density 3 T; magnetic resonance electrical impedance tomography; magnetic resonance electrical property tomography; medical imaging modality; permittivity; Conductivity; Image reconstruction; Imaging phantoms; Impedance; Phantoms; Tomography; MREIT; MREPT; conductivity; permittivity;
Conference_Titel :
Noninvasive Functional Source Imaging of the Brain and Heart & 2011 8th International Conference on Bioelectromagnetism (NFSI & ICBEM), 2011 8th International Symposium on
Conference_Location :
Banff, AB
Print_ISBN :
978-1-4244-8282-5
DOI :
10.1109/NFSI.2011.5936822