Recent Survey of Effective Doses of F-18 FDG Torso PET/CT in Korea and the Current Recommendations for CT Protocols of PET/CT
10.1007/s13139-020-00654-7
- Author:
Ari CHONG
1
;
Jung Mi PARK
;
Kyoungjune PAK
;
Yong-il KIM
;
Hyun Woo KWON
;
Eun Seong LEE
;
Ki Pyo NAM
;
Ho-Young LEE
;
Hong Jae LEE
;
Ik Dong YOO
;
Jae Seon EO
;
Ji Young KIM
;
Joon-Kee YOON
;
Kyeong Min KIM
;
Seong Min KIM
;
Tae-Sung KIM
;
Author Information
1. Department of Nuclear Medicine, Chosun University Hospital, Gwangju, South Korea
- Publication Type:ORIGINAL ARTICLE
- From:Nuclear Medicine and Molecular Imaging
2020;54(5):224-232
- CountryRepublic of Korea
- Language:English
-
Abstract:
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 < 0.001, respectively). In the ultra-low-dose CT group, the CT ED with the iterative reconstruction was significantly lower than that of CT without iterative reconstruction in the 55-kg group (2.4 ± 0.9 vs. 3.3 ± 0.9, p = 0.04).
Conclusions:These results and current recommendations can be helpful for optimizing PET/CT diagnostic reference level (DRL) and reducing unnecessary PET/CT radiation exposure.
