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KMID : 1148920200540050224
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Nuclear Medicine and Molecular Imaging
2020 Volume.54 No. 5 p.224 ~ p.232
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Recent Survey of Effective Doses of F-18 FDG Torso PET/CT in Korea and the Current Recommendations for CT Protocols of PET/CT
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Chong A-Ri
Park Jung-Mi
Pak Kyoung-June
Kim Yong-Il
Kwon Hyun-Woo
Lee Eun-Seong
Nam Ki-Pyo
Lee Ho-Young
Lee Hong-Jae
Yoo Ik-Dong
Eo Jae-Seon
Kim Ji-Young
Yoon Joon-Kee
Kim Kyeong-Min
Kim Seong-Min
Kim Tae-Sung
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Abstract
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Purpose: This study aimed to construct a database of the effective doses (ED) from F-18 fluorodeoxyglucose (FDG) torso positron emission tomography/computed tomography (PET/CT) in Korea to provide data that supports the reduction of the CT dose of PET/CT and optimization of PET/CT protocols in Korea.
Methods: We investigated data of ED and CT parameters of FDG PET/CT. The data were analyzed by body weight groups.
Results: A total of 31 hospitals participated in the survey (99 adults). The mean total EDs (± SD) were 8.77?±?2.76, 10.93?±?3.14, and 12.57?±?3.79 mSv for the 55-, 70-, and 85-kg groups, respectively. The FDG EDs were 4.80?±?0.98, 6.05?±?1.15, and 6.89?±?1.52 mSv, and the CT EDs were 4.00?±?2.12, 4.88?±?2.51, and 5.68?±?2.89 mSv, respectively. Of the enrolled hospitals, 54.5% used ultra-low-dose CT protocols, and their CT ED was significantly lower than low-dose CT group in all groups (2.9?±?1.0, 3.2?±?1.1, and 3.3?±?1.0 mSv vs. 6.6?±?1.6, 7.2?±?2.1, and 7.9?±?2.2 mSv, all p?
Conclusions: These results and current recommendations can be helpful for optimizing PET/CT diagnostic reference level (DRL) and reducing unnecessary PET/CT radiation exposure.
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KEYWORD
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PET/CT, CT, Effective dose, 18F-FDG, Guidelines
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