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  4 T split TEM volume head and knee coils for improved sensitivity and patient accessibility

Avdievich, N., Bradshaw, K., Lee, J.-H., Kuznetsov, A., & Hetherington, H. (2007). 4 T split TEM volume head and knee coils for improved sensitivity and patient accessibility. Journal of Magnetic Resonance, 187(2), 234-241. doi:10.1016/j.jmr.2007.05.006.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-BC78-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-BC79-2
Genre: Journal Article

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Avdievich, NI1, Author              
Bradshaw, K, Author
Lee, J-H, Author
Kuznetsov, AM, Author
Hetherington, HP, Author
Affiliations:
1External Organizations, ou_persistent22              

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 Abstract: Split RF coils offer improved patient access by eliminating the need for the coil to be slid over the region of interest. For unshielded birdcage coils, the presence of end ring currents necessitates a direct electrical connection between two halves of the coil. For high-field (>3 T) shielded birdcage coils, both the shield and the coil must be split and reliably connected electrically. This problem can be circumvented by the use of split TEM volume coils. Since the elements of a TEM coil are coupled inductively, no direct electrical connection between the halves is necessary. In this work we demonstrate that the effects of splitting the shield for head and knee TEMs can be compensated for, and performance retained. For the knee, the improved access allowed the coil diameter to be reduced, enhancing the sensitivity by 15–20%.

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 Dates: 2007-08
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1016/j.jmr.2007.05.006
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Title: Journal of Magnetic Resonance
Source Genre: Journal
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Publ. Info: San Diego [etc.] : Academic Press
Pages: - Volume / Issue: 187 (2) Sequence Number: - Start / End Page: 234 - 241 Identifier: ISSN: 0022-2364
CoNE: https://pure.mpg.de/cone/journals/resource/954922651175_1