An Artificial Shield for MRI Birdcage Coil with Constructive Interference

K. Lezhennikova, A. Hurshkainen, M. Dubois, D. Berrahou, C. Simovski, A. Raaijmakers, P. Jomin, I. Melchakova, S. Enoch, R. Abdeddaim, S. Glybovski

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

Abstrakti

In this contribution, an artificial shield for an MRI birdcage coil based on a cylindrical miniaturized corrugated structure is proposed. The presence of a conventional metallic shield around the birdcage resonator leads to a destructive interference of the primary magnetic field of the coil and the reflected field inside the coil (in the region of an investigated sample). At the same time, the fields constructively interfere in the region between the coil and the shield. As a result, the efficiency of the coil may be limited. The proposed artificial shield has a miniaturized corrugated structure, which demonstrates the property of a constructive interference inside the coil. It has been shown that the proposed structure placed around the birdcage coil can increase the efficiency at its resonance similarly to an ideal cylindrical magnetic wall of the same diameter.

AlkuperäiskieliEnglanti
Otsikko14th European Conference on Antennas and Propagation, EuCAP 2020
KustantajaIEEE
Sivumäärä3
ISBN (elektroninen)9788831299008
DOI - pysyväislinkit
TilaJulkaistu - maalisk. 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaEuropean Conference on Antennas and Propagation - Copenhagen, Tanska
Kesto: 15 maalisk. 202020 maalisk. 2020
Konferenssinumero: 14

Julkaisusarja

NimiProceedings of the European Conference on Antennas and Propagation
ISSN (painettu)2164-3342

Conference

ConferenceEuropean Conference on Antennas and Propagation
LyhennettäEUCAP
Maa/AlueTanska
KaupunkiCopenhagen
Ajanjakso15/03/202020/03/2020

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