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| Survey and analysis on application frequency of medical exposure in Jiangsu Province in 2016 |
| YU Ningle, WANG Jin, MA Jiayi, WANG Furu, CHEN Wei, DU Xiang, YANG Chunyong |
| Department of Radiation Protection, Jiangsu Provincial Center of Disease Control and Prevention, Nanjing 210009 China |
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Abstract Objective To investigate the increasing frequency of medical exposure in Jiangsu Province and to develop an efficient method for the investigation. Methods Thirty-one medical facilities were randomly chosen to study the application frequency of medical exposure in the year of 2016. A multivariate linear regression model was built based on three independent variables (number of staff, numbers of outpatient and inpatient) to predict the frequency of medical exposure in Jiangsu Province. Results The frequency of medical exposure in Jiangsu Province was 926.62 person·times per thousand population including 911.70 person·times of X-ray diagnostic radiology, 1.85 person·times of radiotherapy and 7.97 person·times of nuclear medicine application per thousand population, respectively. The 5-year increasing rates of, CT scan, radiotherapy and nuclear medicine wer 158%, 58.7% and 107%. Conclusion Multivariate regression method performs better than univariate regression. Further investigations need to be done due to the limitation of sample. The frequencies of CT scan and nuclear medicine increased fast, medical radiation protection should be strengthened to maximize the benefits of medical exposure.
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Received: 18 March 2019
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