Eddy current effects on a clinical 7T-68 cm bore scanner.

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Serval ID
serval:BIB_4F3433056F28
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Eddy current effects on a clinical 7T-68 cm bore scanner.
Journal
Magnetic Resonance Materials in Physics Biology and Medicine
Author(s)
Kickler Nils, van der Zwaag Wietske, Mekle Ralf, Kober Tobias, Marques Jose P., Krueger Gunnar, Gruetter Rolf
ISSN
0968-5243
Publication state
Published
Issued date
2010
Volume
23
Number
1
Pages
39-43
Language
english
Abstract
INTRODUCTION: Eddy currents induced by switching of magnetic field gradients can lead to distortions in short echo-time spectroscopy or diffusion weighted imaging. In small bore magnets, such as human head-only systems, minimization of eddy current effects is more demanding because of the proximity of the gradient coil to conducting structures. METHODS: In the present study, the eddy current behavior achievable on a recently installed 7 tesla-68 cm bore head-only magnet was characterized. RESULTS: Residual effects after compensation were shown to be on the same order of magnitude as those measured on two whole body systems (3 and 4.7 T), while using two to three fold increased gradient slewrates.
Keywords
7 Tesla, Head-Only Magnet, Eddy Currents, Echo-Time, Spectroscopy
Pubmed
Web of science
Open Access
Yes
Create date
24/02/2010 11:18
Last modification date
14/02/2022 8:55
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