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KMID : 0364920140390030142
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Journal of Radiation Protection and Research
2014 Volume.39 No. 3 p.142 ~ p.149
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Estimated Exposure Dose and Usage of Radiological Examination of the National Health Screening
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Gil Jong-Won
Park Jong-Hyock
Park Min-Hui
Park Chan-Young
Kim So-Young
Shin Dong-Wook
Kim Won-Dong
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Abstract
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Korea conducts a national health screening program to improve and check-up on public health and in recent years,the screening usage has been increased. Given the increased screening usage for radiographic exams, this study predicts thefrequency of using radiographic exams and the exposure dose. This study estimates the usage of radiographic exams by isolating radiographic exams from the 2011 analysis of the national health insurance corporation, and estimates the publicexposure dose by applying each procedure’s dose table from UNSCEAR 2008. As a result of the analysis, in the 2011 National Health Screening, the average exposure dose per person is assumed tobe 0.57 mSv, and depending on the type of screening program from the radiographic exam, an examinee could be exposedto between 0.2 mSv and 11.081 mSv. The frequency of using radiographic exposure was found to be 16,005,914 and theexposure dose was 6,311.76 person-Sv. The most frequent exam is the Chest X-ray, which was performed 1,070,567 (69.17%),and the UGI has the highest exposure dose at 5,217.94 person-Sv (82.67%). The outcome is categorized based on genderand age, excluding those under 39 years old. In all age groups, the screening usage and exposure dose are higher in femalesthan in males. In particular, females between 50 and 54 years old have the highest screening usage (1,674,787, 10.5%) andexposure dose (701.59 person-Sv, 11.1%). As UGI accounts for 82.76% of procedures, except when done for medical purposes, if the government supports avoluntary UGI exam (which includes the UGI exam in the National Screening Program) or abolishes it completely, as seenoverseas, the cost-effectiveness and validity of the UGI exam, as well as the exposure dose from the National ScreeningProgram will all decrease significantly.
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KEYWORD
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National Health Screening, Usage of radiological examination, Estimated exposure dose, Chest X-ray, UGI
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