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KMID : 1151820200140040345
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Journal of the Korean Society of Radiology
2020 Volume.14 No. 4 p.345 ~ p.351
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Exposure Dose of Thyroid, Breast, and Sexual Gland using a Personal Dosimeter in Multiple CT Examinations
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Kim Hae-Suk
Kim Jang-Oh
Lee Yoon-Ji
Heo Sung-Hoe
Lee Chang-Ho
Min Byung-In
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Abstract
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In this study, a dose assessment was conducted on the exposure dose of thyroid, breast and sexual gland using a personal dosimeter in multiple CT examinations currently being conducted in health examinations. The dose assessment was measured by attaching TLD and EPD to the locations of the thyroid, breast and sexual gland during CT examinations of Brain, Brain + C-S, Brain + Low lung, Brain + L-S among CT items. The generated dose of equipment, CTDIvol and DLP, was measured. The study found that effective doses were rated 41.7% higher for thyroid TLD in Brain + C-S CT examinations than for the general public, 156% higher for EPD, 10% for breast EPD in Brain + Low Lung CT examinations, 124.4% higher for reproductive TLD and 339.8% higher for Brain + L-S CT examinations. The CTDIvol and DLP analysis results showed that C-S CTDIvol values were higher than the diagnostic reference levels at 0.6%, Low Lung CTDIvol values at 5.7%, DLP values at 11.8% and L-S CTDIvol values at 1.2%. In order to reduce the exposure dose of patients, indiscriminate examination is reduced and dose limit setting is needed in health examination.
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KEYWORD
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Computed Tomography , Medical Examination , Themoluminescence Dosimeter , Electronic Personal Dosimeter
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