지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 천권수
- 발행연도
- 2020
- 저작권
- 대구가톨릭대학교 논문은 저작권에 의해 보호받습니다.
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Purpose
Upper gastrointestinal examinations use radiation. It is due to the wide selection of examination sites and the delay of examination time due to various factors, long exposure and surrounding organ exposure are inevitable. In upper gastrointestinal examinations, the target organs with relatively high biological radiosensitivity, such as the lens, thyroid, breast and gonad, are located in the vicinity, so the defense against radiation exposure of these organs is very important.
Meterials and Methods
We have made a whole body pentom that can select the depth of exposure measurement for each organ. And then Radiation doses of the eye, thyroid, breast, stomach, and gonads were measured and analyzed in the same process as the actual upper gastrointestinal examination. In the actual upper gastrointestinal examination, the dose exposed to the stomach is checked and propose a method to reduce the radiation exposure of other organs other than the examination area by using appropriate shielding in the upper gastrointestinal examination.
Results
The average exposure dose reduction of the lens, thyroid, breast and gonad was 62.248% with fluoroscopy and 59.004% with fluoroscopy and spot shoot. In the same process as the actual upper gastrointestinal examination with both fluoroscopy and spot imaging, the exposure dose of the stomach was 45.152 mGy.
Conclusion
Therefore, when performed upper gastrointestinal examination it was confirmed that shielding of the lens, thyroid gland, breast and gonads was effective in decreasing the exposure dose. The newly made human pentom can be used to measure deep dose as well as surface dose since it is possible to select the measurement depth corresponding to the actual human organs.
Upper gastrointestinal examinations use radiation. It is due to the wide selection of examination sites and the delay of examination time due to various factors, long exposure and surrounding organ exposure are inevitable. In upper gastrointestinal examinations, the target organs with relatively high biological radiosensitivity, such as the lens, thyroid, breast and gonad, are located in the vicinity, so the defense against radiation exposure of these organs is very important.
Meterials and Methods
We have made a whole body pentom that can select the depth of exposure measurement for each organ. And then Radiation doses of the eye, thyroid, breast, stomach, and gonads were measured and analyzed in the same process as the actual upper gastrointestinal examination. In the actual upper gastrointestinal examination, the dose exposed to the stomach is checked and propose a method to reduce the radiation exposure of other organs other than the examination area by using appropriate shielding in the upper gastrointestinal examination.
Results
The average exposure dose reduction of the lens, thyroid, breast and gonad was 62.248% with fluoroscopy and 59.004% with fluoroscopy and spot shoot. In the same process as the actual upper gastrointestinal examination with both fluoroscopy and spot imaging, the exposure dose of the stomach was 45.152 mGy.
Conclusion
Therefore, when performed upper gastrointestinal examination it was confirmed that shielding of the lens, thyroid gland, breast and gonads was effective in decreasing the exposure dose. The newly made human pentom can be used to measure deep dose as well as surface dose since it is possible to select the measurement depth corresponding to the actual human organs.
목차
Ⅰ. 서 론 1Ⅱ. 배경이론 41. 방사선량의 기본단위 41) 조사선량(X) 42) 흡수선량(absorbed dose: ) 43) 장기흡수선량(organ absorbed dose) 54) 등가선량(: Equivalent dose in a tissue or organ) 55) 방사선 가중치의 결정 66) 유효선량(effective dose: ) 82. 방사선 방어 101) 행위의 정당화 102) 방어의 최적화 103) 선량한도 103. 외부 피폭의 방어 101) 거리 112) 시간 113) 차폐 114. 방사선이 인체에 미치는 영향 131) 급성영향과 만성영향 132) 신체적 영향과 유전적 영향 133) 확률적 영향과 결정적 영향 135. 의료상 피폭 15Ⅲ. 재료 및 방법 171. 재료 171) 전신팬텀 제작 172) 실험 기기 182. 방법 201) 피폭선량 측정 20Ⅳ. 결과 231. 수정체, 갑상선, 유방, 생식선에서 차폐 전·후의 피폭선량 232. 위의 피폭선량 24Ⅴ. 고찰 25Ⅵ. 결론 31Reference 32
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