Radiological protection detection and dose assessment of selective internal radiotherapy with 90Y resin microspheres
10.3760/cma.j.cn112271-20220223-00066
- VernacularTitle:90Y树脂微球选择性内放射治疗放射防护检测与剂量评估
- Author:
Dexing LIAN
1
;
Shanshan KOU
;
Jianfei LU
;
Qingzhao ZHANG
;
Weiguo ZHU
;
Chuanjian WANG
;
Changsong HOU
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所 辐射防护与核应急中国疾病预防控制中心重点实验室，北京 100088
- Keywords:
90Y;
Resin microspheres;
Internal radiation therapy;
Radiation protection
- From:
Chinese Journal of Radiological Medicine and Protection
2022;42(5):385-390
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To conduct radiation detection and dose assessment in selective internal radiotherapy with 90Y resin microspheres for the purpose of providing a reference for radiological protection. Methods:The dose rates from radiotherapy with 90Y resin microspheres were detected in the process of each operation at different distances from the body surface of patients the levels of dose to the persons concerned were compared with the relevant national regulations and standards. Results:The estimated dose rates were 1.12-454 μSv/h during 90Y resin microspheres dispensing and 2.06-58.2 μSv/h during surgical procedure. The dose rates at 0.5 h after surgery were 22.7-64.1 μSv/h at 5 cm and 0.82-2.55 μSv/h at 1 m from three patient′s body surface. Assuming treating 200 patients a year, the annual individual effective dose to the radiation workers was 0.12-1.03 mSv/year. The annual individual effective dose to the public, comforters and carers of patients was 0.02-0.24 mSv/year after release of a patient. Conclusions:During the treatment, nursing and release of patients, the radiation doses to workers, carers and the public are lower than the individual dose limit given in the GB18871-2002 basic standards for protection against ionizing radiation and for the safety of radiation sources and the management target value set by of the relevant medical institutions.
