Current Recycled and Self-Phase Shift to Expand the Length of Radio-Frequency Coils, With Application to Brain and Spine Coil Array at 7T MRI
DC Field | Value | Language |
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dc.contributor.author | Hernandez, Daniel | - |
dc.contributor.author | Kim, Donghyuk | - |
dc.contributor.author | Nam, Taewoo | - |
dc.contributor.author | Jeong, Yonghwa | - |
dc.contributor.author | Seo, Minyeong | - |
dc.contributor.author | Lee, Eunwoo | - |
dc.contributor.author | Kim, Junghwan | - |
dc.contributor.author | Kim, Kyoung-Nam | - |
dc.date.accessioned | 2023-12-18T08:30:16Z | - |
dc.date.available | 2023-12-18T08:30:16Z | - |
dc.date.issued | 2023-10 | - |
dc.identifier.issn | 2169-3536 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/89667 | - |
dc.description.abstract | The use of the 7-Tesla (T) magnetic resonance imaging (MRI) promises improved imaging quality and higher resolution compared with lower-field MRI systems. The design of the loop coil considers the tradeoff between coil size and performance. A larger coil enables deeper field penetration, but it may result in poorer field uniformity and localization. On the other hand, a smaller coil offers improved localization capabilities, however, field penetration reduces, and multiple coil elements are required to cover the same space as large coils. Additionally, safety concerns regarding the high-energy absorption of electromagnetic waves in healthy tissues principally limit the use of the 7T MRI, which is measured with the specific absorption rate (SAR). A coil that can generate a uniform magnetic field while maintaining a low SAR is necessary to comply with the SAR limits. We propose a coil design that recirculates the current and provides a phase shift in the same structure to provide a magnetic field over a broad area, thus reducing the number of channels required to cover the same area. We present electromagnetic (EM) simulations of the proposed coil with a magnetic field and SAR computed for the brain and human spine model. We built the coil and acquired images with a phantom using a 7T MRI system. The proposed coil improves the SAR by 43% compared with the reference coil in the spinal area in the case of EM simulations, indicating the imaging quality improvement potential of our proposed coil. | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Current Recycled and Self-Phase Shift to Expand the Length of Radio-Frequency Coils, With Application to Brain and Spine Coil Array at 7T MRI | - |
dc.type | Article | - |
dc.identifier.wosid | 001102312800001 | - |
dc.identifier.doi | 10.1109/ACCESS.2023.3326822 | - |
dc.identifier.bibliographicCitation | IEEE ACCESS, v.11, pp 120438 - 120448 | - |
dc.description.isOpenAccess | Y | - |
dc.identifier.scopusid | 2-s2.0-85176314862 | - |
dc.citation.endPage | 120448 | - |
dc.citation.startPage | 120438 | - |
dc.citation.title | IEEE ACCESS | - |
dc.citation.volume | 11 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordAuthor | Coils | - |
dc.subject.keywordAuthor | Magnetic resonance imaging | - |
dc.subject.keywordAuthor | Geometry | - |
dc.subject.keywordAuthor | Specific absorption rate | - |
dc.subject.keywordAuthor | Computational modeling | - |
dc.subject.keywordAuthor | Magnetic fields | - |
dc.subject.keywordAuthor | Brain modeling | - |
dc.subject.keywordAuthor | MRI | - |
dc.subject.keywordAuthor | antennas | - |
dc.subject.keywordAuthor | spine imaging | - |
dc.subject.keywordAuthor | EM simulations | - |
dc.subject.keywordPlus | POWER | - |
dc.subject.keywordPlus | SAR | - |
dc.relation.journalResearchArea | Computer Science | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
dc.relation.journalWebOfScienceCategory | Computer Science, Information Systems | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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