Magnetic resonance imaging (MRI) is a popular non-invasive technique for imaging soft tissue structures within the human body. Due to the increasing widespread use of MRI scanners, many design methods now exist for their principle hardware components, such as RF coils. One such method for designing RF coils is presented here following a time-harmonic target-field approach. A current density solution is found on the coil such that some desired homogeneous magnetic field is induced upon an asymmetrically located target region within the scanner. This requires solving an ill-conditioned integral equation, which is done so using regularization and a combination of penalty functions. The complex, time-dependent current density solution is approximated by a static coil winding pattern. The effect of incorporating shielding into the system is also considered.

Item Type:	Conference Extract
Research Division:	Mathematical Sciences
Research Group:	Numerical and computational mathematics
Research Field:	Optimisation
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in engineering
UTAS Author:	While, PT (Dr Peter While)
UTAS Author:	Forbes, LK (Professor Larry Forbes)
ID Code:	73424
Year Published:	2006
Deposited By:	Mathematics and Physics
Deposited On:	2011-10-05
Last Modified:	2011-10-05
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