Effects of a protective shield for infant bedside X-ray radiography on dose distribution in indoor radiation field
10.13491/j.issn.1004-714X.2026.02.002
- VernacularTitle:婴儿床旁X射线摄影防护罩对室内辐射场剂量分布的影响
- Author:
Zhao ZHANG
1
;
Wenwen JIANG
2
;
Haoyan GU
2
;
Yongzhong MA
2
Author Information
1. Beijing Obstetrics and Gynecology Hospital, Capital Medical University (Beijing Maternal and Child HealthCareHospital), Beijing 100006, China.
2. Beijing Center for Disease Prevention and Control (School of Public Health, Capital Medical University), Beijing 100013, China.
- Publication Type:OriginalArticles
- Keywords:
Bedside X-ray radiography;
Protective shield;
Radiation field;
Dose distribution;
Radiation protection
- From:
Chinese Journal of Radiological Health
2026;35(2):165-172
- CountryChina
- Language:Chinese
-
Abstract:
Objective To verify the radiation shielding effects of a self-developed protective shield for infant bedside X-ray radiography, and measure the dose distribution in the indoor radiation field with and without the shield, and to provide guidance for the radiation protection of infants sharing the room. Methods A MUX-100J mobile medical diagnostic X-ray machine was used as the radiographic device to simulate the exposure conditions of infant bedside X-ray radiography. The ambient dose equivalent rates at measurement points in eight directions on the irradiation plane in the indoor radiation field were measured with and without the protective shield using an AT1121 X/γ dose rate meter under the conventional condition of 56 kV and the maximum single exposure time. Results During infant bedside X-ray radiography, the dose levels in all directions on the irradiation plane within 150 cm from the scatterer center were essentially symmetrically distributed. The ambient dose equivalent rate at 100 cm from the scatterer center on the irradiation plane was (8.01-8.28)×103 μSv/h without the protective shield and 48-84 μSv/h with the shield. At various distances from the scatterer center in all directions on the irradiation plane, the doses measured with the protective shield ranged from 0.34% to 14.12% of those measured without the shield, with an average of 1.85%. Conclusion The dose levels in the indoor radiation field were significantly reduced with the protective shield during infant bedside X-ray radiography. The use of the protective shield can effectively reduce the radiation risk for individuals near the radiographic site within the same room.
