Design of a 7 T Spiral Resonator-Based Filter for MRI Planar Array Coupling Reduction

Gianluigi Tiberi

doi:10.1109/ieeeconf35879.2020.9329519

Design of a 7 T Spiral Resonator-Based Filter for MRI Planar Array Coupling Reduction

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Abstract

The design of a filter for the decoupling of a 7 T RF MRI planar array by using miniaturized spiral resonators is presented. First, we introduce the filter design guidelines and, then, we perform full-wave simulations on an arrangement of three adjacent MRI RF rectangular loops. The numerical results demonstrate that the proposed solution achieves excellent decoupling levels both between strictly adjacent and next-neighbors coils couples (better than -20 dB), while avoiding the use of additional lossy decoupling lumped elements connected into the coil array, hence accomplishing a mechanically robust and versatile design.

Original language	English
Pages	57-58
Number of pages	2
DOIs	https://doi.org/10.1109/ieeeconf35879.2020.9329519
Publication status	Published - 17 Feb 2021
Event	2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings - Duration: 17 Feb 2021 → …

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Conference	2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings
Period	17/02/21 → …

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10.1109/ieeeconf35879.2020.9329519Licence: CC BY 4.0

APS 2020 MRI rev

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abstract = "The design of a filter for the decoupling of a 7 T RF MRI planar array by using miniaturized spiral resonators is presented. First, we introduce the filter design guidelines and, then, we perform full-wave simulations on an arrangement of three adjacent MRI RF rectangular loops. The numerical results demonstrate that the proposed solution achieves excellent decoupling levels both between strictly adjacent and next-neighbors coils couples (better than -20 dB), while avoiding the use of additional lossy decoupling lumped elements connected into the coil array, hence accomplishing a mechanically robust and versatile design.",

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AB - The design of a filter for the decoupling of a 7 T RF MRI planar array by using miniaturized spiral resonators is presented. First, we introduce the filter design guidelines and, then, we perform full-wave simulations on an arrangement of three adjacent MRI RF rectangular loops. The numerical results demonstrate that the proposed solution achieves excellent decoupling levels both between strictly adjacent and next-neighbors coils couples (better than -20 dB), while avoiding the use of additional lossy decoupling lumped elements connected into the coil array, hence accomplishing a mechanically robust and versatile design.

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T2 - 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings

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Design of a 7 T Spiral Resonator-Based Filter for MRI Planar Array Coupling Reduction

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