Minimum stored energy MRI superconducting magnets: From low to high field

Vegh, V., Tieng, Q.M. and Brereton, I.M. (2009) Minimum stored energy MRI superconducting magnets: From low to high field. Concepts in Magnetic Resonance Part B- Magnetic Resonance Engineering, 35B 3: 180-189. doi:10.1002/cmr.b.20143


Author Vegh, V.
Tieng, Q.M.
Brereton, I.M.
Title Minimum stored energy MRI superconducting magnets: From low to high field
Journal name Concepts in Magnetic Resonance Part B- Magnetic Resonance Engineering   Check publisher's open access policy
ISSN 1552-5031
1552-504X
Publication date 2009-07
Year available 2009
Sub-type Article (original research)
DOI 10.1002/cmr.b.20143
Volume 35B
Issue 3
Start page 180
End page 189
Total pages 10
Editor Daniel D. Traficante
Place of publication United States
Publisher Wiley Periodicals
Collection year 2010
Language eng
Subject C1
090303 Biomedical Instrumentation
920203 Diagnostic Methods
Abstract The aim of this article is to describe superconducting magnet coil arrangements from low to high field, particularly from 1T to 7T, within the context of the minimum stored energy designs. The findings illustrate that at low field, the maximum peak magnetic fields are located away from the most inner coils of the magnet configuration, whereas in high field designs, the maximum peak magnetic fields are created on coils lying on the inner diameter of the magnet bore. This becomes a critical aspect of any high field design, since there appears to be much less freedom of design at higher fields, due to the inherent limitations posed by peak magnetic fields on superconductors. Our findings also indicate that at low fields, 3T and less, reverse current coils can be used to shorten superconducting magnets, whereas at high field, above 3T, this is not necessarily the case, due to the large peak fields produced between adjacent, alternating current coils.
Keyword superconducting magnet
minimum stored energy
clinical MRI system
superconducting coil arrangement
RESONANCE-IMAGING MAGNETS
INVERSE APPROACH
MAIN MAGNETS
DESIGN
SYSTEMS
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Centre for Advanced Imaging Publications
 
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Created: Fri, 04 Sep 2009, 10:25:05 EST