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  Improved longitudinal coverage for human brain at 7T: A 16 Element Transceiver Array

Avdievich, N., Pan, J., & Hetherington, H. (2011). Improved longitudinal coverage for human brain at 7T: A 16 Element Transceiver Array. In 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011).

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-4F4A-4 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-4F4B-3
Genre: Meeting Abstract

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https://www.ismrm.org/11/Session33.htm (Abstract)
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 Creators:
Avdievich, N1, Author           
Pan, JP, Author
Hetherington , HP, Author
Affiliations:
1Neurosurgery, Yale University, New Haven, CT, ou_persistent22              

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 Abstract: At 7T, interactions between the human brain and RF result in poor homogeneity and efficiency when volume coils are used for transmission. Although short (9cm) transceiver arrays can dramatically improve both axial homogeneity and efficiency (17uT/kW) using RF shimming, coverage in the longitudinal direction is limited. Increasing the length of the array to 15cm provides only modest improvements in longitudinal coverage at the cost of significant decreases in sensitivity and transmit efficiency. To overcome this limitation we have developed an inductively decoupled 16 coil transceiver array, with the individual coils arranged in two rows along the z-axis of 8 coils each (2x8 array). The array provides dramatically improved longitudinal coverage and SNR while retaining high efficiency.

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 Dates: 2011-05
 Publication Status: Issued
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Title: 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011)
Place of Event: Montréal, Canada
Start-/End Date: 2011-05-07 - 2011-05-13

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Title: 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 328 Start / End Page: - Identifier: -