Issa, I., Ford, K.L. orcid.org/0000-0002-1080-6193, Rao, M. et al. (1 more author) (2016) The Enhancement of Radio Frequency Magnetic Field for a 1.5 Tesla Magnetic Resonance System Using a High Impedance Surface. IET Microwaves, Antennas and Propagation. ISSN 1751-8733
Abstract
This paper presents a novel design of a High Impedance Surface (HIS) to improve the magnetic field strength of a Radio Frequency (RF) coil at 63.8 MHz, suitable for 1.5T magnetic resonance imaging (MRI) systems. The HIS is miniaturized using distributed interdigital capacitors. A HIS with an electrically small unit cell (λ/94) and is positioned between a RF transmit-receive (TR) coil and an RF shield. The magnitude of the magnetic field from an RF coil when coupled to a dielectric phantom load (mimicking a biological sample) was estimated using numerical simulation (finite integral methods) and corroborated with measurements. Simulated median improvements in magnetic field inside a dielectric phantom range from approximately 18% to 32% depending on the area of the HIS.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Institution of Engineering and Technology. This is an author produced version of a paper subsequently published in IET Microwaves, Antennas and Propagation. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Aug 2016 12:20 |
Last Modified: | 27 Jan 2020 14:01 |
Published Version: | http://dx.doi.org/10.1049/iet-map.2016.0088 |
Status: | Published |
Publisher: | Institution of Engineering and Technology (IET) |
Refereed: | Yes |
Identification Number: | 10.1049/iet-map.2016.0088 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:103268 |