Discussion on the evaluation of radiation protection of “four-in-one” dental X-ray equipment
10.13491/j.issn.1004-714X.2023.03.019
- VernacularTitle:口腔“四合一”X射线摄影设备放射防护评价探讨
- Author:
Hui XU
1
;
Xipeng ZHAO
2
;
Zechen FENG
3
;
Baorong YUE
1
;
Guoqing LIU
1
Author Information
1. Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088 China.
2. National Center for Occupational Safety and Health, NHC, Beijing 102308 China.
3. Beijing Center for Disease Control and Prevention, Beijing Preventive Medicine Research Center, Beijing 100013 China.
- Publication Type:OriginalArticles
- Keywords:
Dental X-ray equipment;
Dental cone-beam CT;
Radiation protection;
Patient dose
- From:
Chinese Journal of Radiological Health
2023;32(3):322-327
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the radiation protection of “four-in-one” dental X-ray equipment and to investigate the safety interlock of the equipment by measuring the scattered radiation at the position of the patient during operation. Methods A cone-beam CT dental phantom was used to simulate the patient’s head. The intra-oral and extra-oral components of the “four-in-one” X-ray equipment were installed in a 5 m2 room. The scattered radiation at patient position was measured using a γ/X-ray survey meter, and the effects of intra-oral and extra-oral components were compared. Results For a 5 m2 room, when CBCT was exposed under typical conditions, the dose at the patient's position was 10.70 uSv/h when there was an intra-oral component and 10.60 uSv/h when there was no intraoral component. The intra-oral part did not affect the radiation dose at the patient's position. When the intra-oral component was exposed, the dose rate at the patient's position was 4.05-6.85 uSv/h, and the extra-oral part did not affect the scattered dose of the patient examined with intra-oral components. Conclusion The evaluation of radiation protection of new equipment must comprehensively consider radiation safety and equipment operation safety. The results of this study provide suggestions for clinical radiation protection supervision and evaluation of “four-in-one” dental X-ray equipment.
