Open half-volume quadrature transverse electromagnetic coil for high-field magnetic resonance imaging

A half‐volume quadrature head transverse electromagnetic (TEM) coil has been constructed for 4 T imaging applications. This coil produces a sufficiently large homogeneous B1 field region for the use as a volume coil. It provides superior transmission efficiency, resulting in significantly lower powe...

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Bibliographic Details
Published in:Magnetic resonance in medicine 2005-04, Vol.53 (4), p.937-943
Main Authors: Peshkovsky, A. S., Kennan, R. P., Fabry, M. E., Avdievich, N. I.
Format: Article
Language:English
Subjects:
4 T
Brain - anatomy & histology
Electromagnetic Phenomena
half-volume
high field
Humans
Image Enhancement - methods
Magnetic Resonance Imaging - instrumentation
MRI
RF coil
TEM
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Summary:A half‐volume quadrature head transverse electromagnetic (TEM) coil has been constructed for 4 T imaging applications. This coil produces a sufficiently large homogeneous B1 field region for the use as a volume coil. It provides superior transmission efficiency, resulting in significantly lower power deposition, as well as greater sensitivity and improved patient comfort and accessibility compared with conventional full‐volume coils. Additionally, this coil suppresses the RF penetration artifact that distorts the RF magnetic field profile and alters the intensity in high‐field images recorded with linear surface and volume coils. These advantages make it possible to apply this device as an efficient transmit/receive coil for high‐field imaging with a restricted field of view. Magn Reson Med 53:937–943, 2005. © 2005 Wiley‐Liss, Inc.
ISSN:0740-3194
1522-2594
DOI:10.1002/mrm.20422