Monte Carlo-based estimation of absorbed dose and effective dose to critical tissues and organs of operators in the overexposure incident during an interventional procedure
10.3760/cma.j.cn112271-20240125-00032
- VernacularTitle:一起介入手术过量照射事件中术者关键组织器官吸收剂量和有效剂量的蒙特卡罗估算
- Author:
Yuchen YIN
1
;
Xuan WANG
;
Wenxing XU
;
Xiaoyu BAI
;
Yu TU
;
Bingjie ZHANG
;
Liang SUN
Author Information
1. 苏州大学放射医学与防护学院 放射医学与辐射防护国家重点实验室，苏州 215123
- Keywords:
Interventional therapy;
Organ dose;
Monte Carlo
- From:
Chinese Journal of Radiological Medicine and Protection
2024;44(8):688-692
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To estimate tissue/organ doses and effective dose to operators in the overexposure incident during an interventional procedure using Monte Carlo method.Methods:The phantoms were constructed for both the operators and the patient based on the adult mesh-type reference computational phantoms (MRCPs) recommended by the International Commission on Radiological Protection (ICRP) Publication 145 and phantom deformation technology. Models of exposure scenario were constructed based on the on-site equipment and the irradiation conditions. The Monte Carlod simulation method was used to evaluate the absorbed dose to critical tissues and organs, such as the operator′s eye lens and thyroid, as well as the effective dose.Results:In the particular exposure conditions, the maximum absorbed doses in the primary organs of the two operators were in the left eye lens, with doses of 1.216 and 0.223 mGy, respectively. The thyroid absorbed doses were 0.074 and 0.019 mGy, while the effective doses to the two operators were 0.088 and 0.021 mSv, respectively. The reduction rates of effective dose for the two operators when wearing lead aprons and lead thyroid collars were 67.16% and 78.79%, respectively.Conclusions:The combination of Monte Carlo method and MRCPs can be used to restore a specific irradiation scenario to a high degree and to estimate the physical dose of to the irradiated persons.
