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학술지 Proposed Safety Guidelines for Patient Assistants in an Open MRI Environment
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오석훈, 홍선의, 최형도
International Journal of Environmental Research and Public Health, v.19 no.22, pp.1-9
22HH3100, 복합 전파환경에서의 국민건강 보호 기반 구축 사업, 최형도
The wide-open side of an open magnetic resonance imaging (MRI) system allows a patient to easily contact the patient assistant during MRI scans. A wide-open-shaped magnet is highly effective when interventional procedures are necessary. Patient assistants can provide comfort by holding a part of the patient's body. Because current regulations or guidelines are concerned with only patient radio frequency (RF) safety, investigations on the safety of patient assistants exposed to high-magnetic field MRI (up to 1.2 T) are required. In this study, five different poses of patient assistants were numerically simulated at a 1.2 T open MRI system to determine the impact of poses on the RF exposure level. The 10-g averaged specific absorption rate (SAR) levels were analyzed for the poses of each patient assistant wearing gloves. Compared with the patient, up to 29.8% of the patient SAR was observed in the patient assistant. When the patient assistant wore latex gloves, a 63.7% reduction in the 10-g averaged SAR level was observed, which could be a remedy to minimize possible RF hazards. To prevent possible RF hazards during MRI scans, certain clauses regarding the patient assistant's poses or wearing gloves must be added to the existing MRI screening forms.
KSP 제안 키워드
Magnetic field(MF), Magnetic resonance(MR), Open MRI, Open magnetic resonance imaging, RF Exposure, RF hazards, Safety guidelines, exposure levels, high magnetic field, specific absorption rates(SAR)
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