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  The electromagnetic fields of a 64 MHz quadrature driven birdcage coil in ASTM phantom

Kozlov, M., Angelone, L. M., & Kainz, W. (2017). The electromagnetic fields of a 64 MHz quadrature driven birdcage coil in ASTM phantom. In 47th European Microwave Conference (EuMC). doi:10.23919/EuMC.2017.8230947.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-1C7D-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-F611-6
Genre: Conference Paper

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 Creators:
Kozlov, Mikhail1, Author              
Angelone, L. M., Author
Kainz, W., Author
Affiliations:
1Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205649              

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Free keywords: Phantoms; Load modeling; Feeds; Radio frequency; Tuning; Trajectory
 Abstract: This study investigates the effect of the tuning conditions and losses of a radiofrequency birdcage coil on the incident field generated in a phantom. Several numerical implementations of a birdcage body coil model with variable coil losses were studied. The results showed that magnetic field at the coil isocenter (||H||iso), normalized to the square root of the whole body specific absorption rate, depends linearly on the coil quality factor. The latter depends non-linear on the birdcage tuning conditions and coil losses. Additionally, when realistic tuning and losses are neglected, results suggest that systematic errors of up to 35% could occur in calculated induced electric fields inside ASTM phantom.

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Language(s): eng - English
 Dates: 2017-12-21
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.23919/EuMC.2017.8230947
 Degree: -

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Title: 47th European Microwave Conference (EuMC)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISBN: 978-2-87487-047-7