Hyun Chan Pyo et al 2005 Phys. Med. Biol. 50 3183 doi:10.1088/0031-9155/50/13/015
Identification of current density distribution in electrically conducting subject with anisotropic conductivity distribution
Hyun Chan Pyo1, Ohin Kwon2, Jin Keun Seo3 and Eung Je Woo1
Show affiliationsCurrent density imaging (CDI) is able to visualize a three-dimensional current density distribution J inside an electrically conducting subject caused by an externally applied current. CDI may use a magnetic resonance imaging (MRI) scanner to measure the induced magnetic flux density B and compute J via the Ampere law 
. However, measuring all three components of B = (Bx, By, Bz) has a technical difficulty due to the requirement of orthogonal rotations of the subject inside the MRI scanner. In this work, we propose a new method of reconstructing a current density image using only Bz data so that we can avoid the subject rotation procedure. The method utilizes an auxiliary injection current to compensate the missing information of Bx and By. The major advantage of the method is its applicability to a subject with an anisotropic conductivity distribution. Numerical experiments show the feasibility of the new technique.
- PACS
- Subjects
- Dates
-
Issue 13 (7 July 2005)
Received 5 January 2005, in final form 9 May 2005
Published 22 June 2005
-
Identification of current density distribution in electrically conducting subject with anisotropic conductivity distribution
Hyun Chan Pyo et al 2005 Phys. Med. Biol. 50 3183
-
Generating Hot Gas in Simulations of Disk-Galaxy Major Mergers
T. J. Cox et al 2004 ApJ 607 L87
-
Laser-assisted collisions: Investigation of the optical collision process Na(3s)+Kr+h nu to Na(3p)+Kr in a crossed beam experiment
J Grosser et al 1994 J. Phys. B: At. Mol. Opt. Phys. 27 L367
-
The electrostatic depinning mechanism of domain wall for near-stoichiometric lithium niobate crystals
Wenbo Yan et al 2006 J. Phys. D: Appl. Phys. 39 4245
-
Isothermal and anisothermal implementations of 2D shape memory alloy modeling for transient impact response calculation
Manuel Collet et al 2009 Smart Mater. Struct. 18 125019
-
Impact of hierarchical modular structure on ranking of individual nodes in directed networks
Naoki Masuda et al 2009 New J. Phys. 11 113002
-
Band-by-band decompositions of the Born effective charges
Philippe Ghosez and Xavier Gonze 2000 J. Phys.: Condens. Matter 12 9179
-
Spectral line removal in the LIGO Data Analysis System (LDAS)
Antony C Searle et al 2003 Class. Quantum Grav. 20 S721
-
Mechanisms driving alteration of the Landau state in the vicinity of a second-order phase transition
M Baldo et al 2004 J. Phys.: Condens. Matter 16 6431
-
Inner Rim of a Molecular Disk Spatially Resolved in Infrared CO Emission Lines
M. Goto et al. 2006 ApJ 652 758