A time-harmonic inverse methodology for the design of RF coils in MRI

Ben G Lawrence; Stuart Crozier; Desmond D Yau; David M Doddrell

doi:10.1109/10.972841

A time-harmonic inverse methodology for the design of RF coils in MRI

IEEE Trans Biomed Eng. 2002 Jan;49(1):64-71. doi: 10.1109/10.972841.

Authors

Ben G Lawrence¹, Stuart Crozier, Desmond D Yau, David M Doddrell

Affiliation

¹ Centre for Magnetic Resonance, University of Queensland, St Lucia Brisbane, Australia. ben.lawrence@cmr.uq.edu.au

PMID: 11794773
DOI: 10.1109/10.972841

Abstract

An inverse methodology is described to assist in the design of radio-frequency (RF) coils for magnetic resonance imaging (MRI) applications. The time-harmonic electromagnetic Green's functions are used to calculate current on the coil and shield cylinders that will generate a specified internal magnetic field. Stream function techniques and the method of moments are then used to implement this theoretical current density into an RF coil. A novel asymmetric coil operating for a 4.5 T MRI machine was designed and constructed using this methodology and the results are presented.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electromagnetic Fields
Equipment Design
Magnetic Resonance Imaging / instrumentation*
Mathematics
Phantoms, Imaging
Radio Waves