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  Near-field homogeneity optimization for several MRI dual-row RF head array geometries at 300 MHz

Kozlov, M., Turner, R., & Boulant, N. (2014). Near-field homogeneity optimization for several MRI dual-row RF head array geometries at 300 MHz. In 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI) (pp. 1915-1916). Piscataway, NJ: IEEE. doi:10.1109/APS.2014.6905284.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0025-73C6-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-D267-4
Genre: Conference Paper

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 Creators:
Kozlov, Mikhail1, Author              
Turner, Robert1, Author              
Boulant, N.2, Author
Affiliations:
1Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634550              
2NMR methodological research for imaging and spectroscopy (UNIRS), Neurospin, French Alternative Energies and Atomic Energy Commission (CEA), Saclay, France, ou_persistent22              

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Free keywords: Magnetic resonance imaging; Near-field communication; Optimisation; MRI dual row RF head array geometries; Dual row magnetic resonance; Imaging arrays; Interior point optimization algorithm; Near field homogeneity optimization; Radiative elements; Arrays; Geometry; Head; Magnetic heads; Magnetic resonance imaging; Optimization; Radio frequency
 Abstract: We used the interior-point optimization algorithm to perform static RF shimming of three overlapped dual-row magnetic resonance imaging (MRI) arrays. These had radiative elements of axial lengths 80, 100, and 110 mm respectively. We evaluated the robustness of the static shims thus obtained. The head-and-torso model was located at different axial positions, including one where the distance between the crown of the head and the array's axial centre was about 50 mm. In this head position, with radiative elements of axial length 110 mm, the inhomogeneity, calculated over a brain volume with and without the cerebellum, could be reduced to as little as 5.4 % and 8.9 % respectively.

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Language(s): eng - English
 Dates: 2014-07
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1109/APS.2014.6905284
 Degree: -

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Title: 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
Place of Event: Memphis, TN, USA
Start-/End Date: 2014-07-06 - 2014-06-11

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Title: 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
Source Genre: Proceedings
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Publ. Info: Piscataway, NJ : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1915 - 1916 Identifier: ISBN: 978-1-4799-3540-6