Original article

Investigation of Personal Dosimeter Loss Case and Measures to Prevent Loss

Seong-Woo Park1,*,  Hyeon-Sik Park1,  Yeong-Jae Park1,  Geong-Jae Lee1,  Gi-Baek Oh2,  Seong-Ha Lee2,  Min-Seok Kim3,  Ju-Eon Park3,  Moon-Hui Won4  

Department of Radiation Safety Office, Seoul National University Bundang Hospital, Seongnam, Korea
1Department of Radiation Safety Office, Severance Hospital, Yonsei University Health System, Seoul, Korea
2Department of Radiation Safety Office, Seoul National University Hospital, Seoul, Korea
3Department of Radiation Safety Office, Samsung Medical Center, Seoul, Korea


Purpose: It is intended to improve the management efficiency of personal dosimeters by analyzing and sharing personal dosimeter loss cases and loss prevention measures. Materials and Methods: From 2017 to 2021, data on the number of lost personal dosimeters were collected at large hospitals, and the number of personal dosimeters issued and lost were investigated. Results: In order to prevent loss by institution, methods such as the use of auxiliary rings, contact stickers and dosimeter necklaces were implemented. Conclusion: Hospitals are a business that frequently changes clothes, such as surgical gowns and work clothes, so there is a lot of loss. In addition, it was confirmed that the loss rate increases as the number of personal dosimeters issued increases.

Figures & Tables

Fig. 1. The graph demonstrates types of personal dosimeter loss in hospitals, with the highest incidence occurring during work uniform changes.