Analysis of the frequency of X-ray diagnostic examinations and CT radiation doses in public hospitals of a district in Ningbo City, China
10.13491/j.issn.1004-714X.2025.03.003
- VernacularTitle:宁波市某区公立医院X射线诊断检查频次和CT剂量调查分析
- Author:
Shuxia HAO
1
;
Mengxue LI
2
;
Yong WANG
3
;
Shengnan FAN
2
;
Jingguo ZHANG
2
;
Xueying WANG
4
;
Jun DENG
2
;
Quanfu SUN
2
Author Information
1. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China;Qingdao Center for Disease Control and Prevention, Qingdao 266033, China.
2. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
3. Ningbo Center for Disease Control and Prevention, Ningbo 315000, China.
4. Beilun District Center for Disease Control and Prevention, Ningbo 315010, China.
- Publication Type:OriginalArticles
- Keywords:
Radiological diagnosis;
Examination frequency;
CT dose;
DICOM file
- From:
Chinese Journal of Radiological Health
2025;34(3):324-330
- CountryChina
- Language:Chinese
-
Abstract:
Objective To systematically analyze the medical radiation exposure levels in a district of Ningbo City and to provide a scientific basis for the reasonable and effective control of medical radiation exposure. Methods Based on the radiological diagnosis frequency and dose information system, basic medical radiation exposure data were collected, such as radiation doses received by patients in various X-ray diagnostic examinations, from all 13 public medical institutions in a district of Ningbo City from January 1 to December 31, 2020. The data were analyzed for the percentage and collective effective dose of various diagnostic examinations, the distribution of examinations by sex and age, and the number of patients undergoing two or more examinations and their cumulative doses within multiple time intervals. Results Among medical X-ray diagnostic examinations in the district, the percentages of CT examination and routine photography examination were 50.88% and 47.93%, respectively, and the collective effective dose of CT examination accounted for 97.75%. By age and sex, the frequency of examination was the highest in the age group of 45-54 years, and the frequency of examination in the male was higher than that in the female before age 55. The annual effective dose for two patients exceeded 100 mSv. Conclusion In this study, CT examination accounted for up to 50.88% of all medical X-ray diagnostic examinations, and contributed 97.75% of the collective effective dose, highlighting the need for particular attention to the justification of medical radiation exposure from CT.
