ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 RF Exposure Assessment for Various Poses of Patient Assistant in Open MRI Environment
Cited 1 time in scopus Download 27 time Share share facebook twitter linkedin kakaostory
저자
홍선의, 오석훈, 최형도
발행일
202106
출처
Applied Sciences, v.11 no.11, pp.1-10
ISSN
2076-3417
출판사
MDPI
DOI
https://dx.doi.org/10.3390/app11114967
협약과제
21HH2400, 복합 전파환경에서의 국민건강 보호 기반 구축 사업, 최형도
초록
In this study, the radio-frequency (RF) energy exposure of patient assistants was assessed for an open magnetic resonance imaging (MRI) system based on numerical computations of the head and body RF coil. Various poses of the patient assistants were defined to see how poorly they affected the RF energy exposure. For the assessments, the peak spatial-averaged specific absorption rate (SAR) levels were carefully compared with each patient assistant pose based on the finite-difference time domain calculations of RF coil models when the patient was placed in such coils in a 0.3 Tesla open MRI system. Overall, the SAR levels of the patient assistant were much lower than those of the patient. However, significantly increased SAR levels were observed under specific conditions, including a larger loop size of the patient assistants?? arms and a closer distance to the RF coils. A comparably high level of SAR to the patient's body was also found. More careful investigations are needed to prevent the increase of SAR in patient assistants for open MRI systems at higher field strengths.
키워드
Dosimetry, Open MRI system, Patient assistant exposure, RF coil model, Safety, SAR
KSP 제안 키워드
Exposure assessment, Finite Difference Time Domain(FDTD), MRI systems, Magnetic resonance(MR), Numerical computations, Open MRI, Open magnetic resonance imaging, RF Energy, RF Exposure, RF coils, Radio Frequency(RF)
본 저작물은 크리에이티브 커먼즈 저작자 표시 (CC BY) 조건에 따라 이용할 수 있습니다.
저작자 표시 (CC BY)