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  Design and SAR Estimation of a Segmented Loop for Dual Coil CASL at 9.4 T

Bause, J., Shajan, G., Hoffmann, J., Scheffler, K., & Pohmann, R. (2012). Design and SAR Estimation of a Segmented Loop for Dual Coil CASL at 9.4 T. Poster presented at 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012), Melbourne, Australia.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-A5C7-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-A5C8-3
Genre: Poster

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 Creators:
Bause, J1, 2, Author              
Shajan, G1, 2, Author              
Hoffmann, J1, 2, Author              
Scheffler, K1, 2, Author              
Pohmann, R1, 2, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Dual-Coil Continuous Arterial Spin Labeling (DC-CASL) can reduce magnetization transfer and increase SNR. Here a balanced detunable segmented loop coil for DC-CASL in humans at 9.4T was developed and FDTD simulations were performed to estimate the optimal phase shift as well as the local SAR. The simulations showed that sufficient labeling is possible without exceeding the IEC limits when the duty cycle is limited to 25 %. An additional safety margin of 37 % was included in the SAR calculations to account for deviations in the position of the coils.

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 Dates: 2012-05
 Publication Status: Published in print
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Title: 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012)
Place of Event: Melbourne, Australia
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Title: 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 2673 Start / End Page: - Identifier: -