Efficient hybrid eddy current simulation in thick cylinders and thin surfaces of arbitrary geometry induced by MRI gradient coils

Sanchez Lopez, Hector, Poole, Michael, Weber, Ewald, Liu, Limei and Crozier, Stuart (2012). Efficient hybrid eddy current simulation in thick cylinders and thin surfaces of arbitrary geometry induced by MRI gradient coils. In: 20th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM), Melbourne, Australia, (). 5-11 May 2012.

Author Sanchez Lopez, Hector
Poole, Michael
Weber, Ewald
Liu, Limei
Crozier, Stuart
Title of paper Efficient hybrid eddy current simulation in thick cylinders and thin surfaces of arbitrary geometry induced by MRI gradient coils
Conference name 20th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM)
Conference location Melbourne, Australia
Conference dates 5-11 May 2012
Publication Year 2012
Sub-type Poster
Language eng
Abstract/Summary Eddy currents are one of the main causes of deleterious cross-talk within hybrid MRI scanners such as (IGRT-MRI) Image Guided Radiotherapy-MRI or PET-MRI systems. Currents induced in the conducting parts of scanners produce acoustic noise, power heating, magnetic field asymmetries. In this paper we present a new fast and efficient eddy current simulation method which combines current densities expressed as normalized Fourier series and linear basis functions. The new method is capable of accurately simulating currents induced in thick cylinders of finite length (such as a cryostat) and thin surfaces of arbitrary shape by coils of arbitrary geometry.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Electronic Poster Session - Engineering: MR Engineering Safety & Systems (Non-RF) - Poster 2751.

 
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Created: Mon, 08 Apr 2013, 16:44:52 EST by Ms Kimberley Nunes on behalf of Centre for Medical Diagnostic Technologies in Qld