A Comparative Study of Birdcage RF Coil Configurations for Ultra-High Field Magnetic Resonance Imaging
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Seo, Jeung-Hoon | - |
dc.contributor.author | Han, Yeji | - |
dc.contributor.author | Chung, Jun-Young | - |
dc.date.accessioned | 2022-04-13T02:40:07Z | - |
dc.date.available | 2022-04-13T02:40:07Z | - |
dc.date.created | 2022-04-13 | - |
dc.date.issued | 2022-03 | - |
dc.identifier.issn | 1424-8220 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/83944 | - |
dc.description.abstract | Improvements in transmission and reception sensitivities of radiofrequency (RF) coils used in ultra-high field (UHF) magnetic resonance imaging (MRI) are needed to reduce specific absorption rates (SAR) and RF power deposition, albeit without applying high-power RF. Here, we propose a method to simultaneously improve transmission efficiency and reception sensitivity of a band-pass birdcage RF coil (BP-BC RF coil) by combining a multi-channel wireless RF element (MCWE) with a high permittivity material (HPM) in a 7.0 T MRI. Electromagnetic field (EM-field) simulations, performed using two types of phantoms, viz., a cylindrical phantom filled with oil and a human head model, were used to compare the effects of MCWE and HPM on BP-BC RF coils. EM-fields were calculated using the finite difference time-domain (FDTD) method and analyzed using Matlab software. Next, to improve RF transmission efficiency, we compared two HPM structures, namely, a hollow cylinder shape HPM (hcHPM) and segmented cylinder shape HPM (scHPM). The scHPM and MCWE model comprised 16 elements (16-rad BP-BC RF coil) and this coil configuration demonstrated superior RF transmission efficiency and reception sensitivity along with an acceptable SAR. We expect wider clinical application of this combination in 7.0 T MRIs, which were recently approved by the United States Food and Drug Administration. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
dc.relation.isPartOf | SENSORS | - |
dc.title | A Comparative Study of Birdcage RF Coil Configurations for Ultra-High Field Magnetic Resonance Imaging | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000771108200001 | - |
dc.identifier.doi | 10.3390/s22051741 | - |
dc.identifier.bibliographicCitation | SENSORS, v.22, no.5 | - |
dc.description.isOpenAccess | N | - |
dc.citation.title | SENSORS | - |
dc.citation.volume | 22 | - |
dc.citation.number | 5 | - |
dc.contributor.affiliatedAuthor | Seo, Jeung-Hoon | - |
dc.contributor.affiliatedAuthor | Han, Yeji | - |
dc.contributor.affiliatedAuthor | Chung, Jun-Young | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | inductively coupled wireless element | - |
dc.subject.keywordAuthor | high permittivity material | - |
dc.subject.keywordAuthor | FDTD method | - |
dc.subject.keywordAuthor | birdcage RF coil | - |
dc.subject.keywordAuthor | 7 | - |
dc.subject.keywordAuthor | 0 T MRI | - |
dc.subject.keywordPlus | TO-NOISE RATIO | - |
dc.subject.keywordPlus | RADIOFREQUENCY POWER DEPOSITION | - |
dc.subject.keywordPlus | HIGH-PERMITTIVITY | - |
dc.subject.keywordPlus | ELECTROMAGNETIC-FIELDS | - |
dc.subject.keywordPlus | SURFACE COILS | - |
dc.subject.keywordPlus | SENSITIVITY | - |
dc.subject.keywordPlus | TRANSMIT | - |
dc.subject.keywordPlus | ARRAY | - |
dc.subject.keywordPlus | NMR | - |
dc.subject.keywordPlus | SIMULATIONS | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, Republic of Korea(13120)031-750-5114
COPYRIGHT 2020 Gachon University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.