ArticleMagnetic resonance in medicine2018
Modular transmit/receive arrays using very-high permittivity dielectric resonator antennas.
Article in Magnetic resonance in medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Enhancing SNR in MRI at 7T using wearable coils, dielectric resonators, and dipole antennas.Magma (New York, N.Y.) · 2026Article
- Effect of an air layer on the design of high-permittivity material helmets for 7 T magnetic resonance imaging.Magma (New York, N.Y.) · 2026Article
- Multi-feed, loop-dipole combined dielectric resonator antenna arrays for human brain MRI at 7 T.Magma (New York, N.Y.) · 2023Article
- Novel materials in magnetic resonance imaging: high permittivity ceramics, metamaterials, metasurfaces and artificial dielectrics.Magma (New York, N.Y.) · 2022Review
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Authors and funding
3 authors.
Funding
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Abstract
purposeDielectric resonator antenna (DRAs) are compact structures that exhibit low coupling between adjacent elements and therefore can be used as MRI transmit arrays. In this study, we use very high permittivity materials to construct modular flexible transceive arrays of a variable numbers of elements for operation at 7T.
methodsDRAs were constructed using rectangular blocks of ceramic (lead zirconate titanate, ε
resultsCoupling between DRAs spaced 5 mm apart on a phantom was -18.2 dB compared to -9.1 dB for equivalently spaced surface coils. DRAs showed a higher B1+ intensity close to the antenna but a lower penetration depth compared to the surface coil.
conclusionDRAs show very low coupling compared to equally sized surface coils and can be used in transceive arrays without requiring decoupling networks. The penetration depth of the current DRA geometry means they are ideally suited to imaging of extremities. Magn Reson Med 79:1781-1788, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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