본 연구에서는 구내 촬영시 방사선작업종사자와 X선관 사이 거리의 증가에 따라 방사선작업종사자의 안면부 피폭선량 감소의 변화를 측정하고자 하였다. 우선 인체조직과 유사한 안면부 Phantom을 제작하였다. 구내 촬영 장치를 이용하여 촬영조건을 성인 상악 대구치부 노출조건 (60kVp, 10mA. 50msec)과 소아 상악 대구치부 노출조건 (60kVp, 10mA, 20msec)으로 설정 하고 방사선작업종사의 안면부의 위치에 Chamber를 고정시켰다. X선 관구와 Phantom을 Chamber로 부터 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm 위치시킨 후 각 검사조건으로 Phantom을 20회 조사한 후 평균 산란선량을 측정 하였다. 연구 결과 성인 조건으로 조사한 후 감소율은 10cm에서 조사한 산란선량을 기준으로 하였을 때 40cm 에서는 감소율이 7.43%로 약 92.6%가 감소가 되었다. 또한 소아 조건으로 조사한 후 감소율은 10 cm에서 조사한 산란선량을 기준으로 하였을 때 40 cm 에서는 감소율이 2.58 %로 약 97.6%가 감소가 되었다. 결론적으로 치과 방사선 검사 시 방사선 피폭에 대한 방호가 필요할 것으로 사료된다.
본 연구에서는 구내 촬영시 방사선작업종사자와 X선관 사이 거리의 증가에 따라 방사선작업종사자의 안면부 피폭선량 감소의 변화를 측정하고자 하였다. 우선 인체조직과 유사한 안면부 Phantom을 제작하였다. 구내 촬영 장치를 이용하여 촬영조건을 성인 상악 대구치부 노출조건 (60kVp, 10mA. 50msec)과 소아 상악 대구치부 노출조건 (60kVp, 10mA, 20msec)으로 설정 하고 방사선작업종사의 안면부의 위치에 Chamber를 고정시켰다. X선 관구와 Phantom을 Chamber로 부터 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm 위치시킨 후 각 검사조건으로 Phantom을 20회 조사한 후 평균 산란선량을 측정 하였다. 연구 결과 성인 조건으로 조사한 후 감소율은 10cm에서 조사한 산란선량을 기준으로 하였을 때 40cm 에서는 감소율이 7.43%로 약 92.6%가 감소가 되었다. 또한 소아 조건으로 조사한 후 감소율은 10 cm에서 조사한 산란선량을 기준으로 하였을 때 40 cm 에서는 감소율이 2.58 %로 약 97.6%가 감소가 되었다. 결론적으로 치과 방사선 검사 시 방사선 피폭에 대한 방호가 필요할 것으로 사료된다.
The study examined the changes in the decreased facial exposure dose for radiological technologists depending on increased distance between the workers and the X-ray tube head during intraoral radiography. First, the facial phantom similar to the human tissues was manufactured. The shooting examinat...
The study examined the changes in the decreased facial exposure dose for radiological technologists depending on increased distance between the workers and the X-ray tube head during intraoral radiography. First, the facial phantom similar to the human tissues was manufactured. The shooting examination was configured to the maxillary molars for adults (60kVp, 10mA, 50msec) and for children (60kVp, 10mA, 20msec), and the chamber was fixed where the facial part of the radiation worker would be placed using the intraoral radiography equipment. The distances between the X-ray tube head and the phantom were set to 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm. The phantom was radiated 20 times with each examination condition and the average scattered doses were examined. The rate at the distance of 40cm decreased by about 92.6% to 7.43% based on the scattered rays radiated at the distance of 10cm under the adult conditions. The rate at the distance of 40cm decreased by about 97.6% to 2.58% based on the scattered rays radiated at the distance of 10cm under the children conditions. Protection from the radiation exposure was required during the dental radiographic examination.
The study examined the changes in the decreased facial exposure dose for radiological technologists depending on increased distance between the workers and the X-ray tube head during intraoral radiography. First, the facial phantom similar to the human tissues was manufactured. The shooting examination was configured to the maxillary molars for adults (60kVp, 10mA, 50msec) and for children (60kVp, 10mA, 20msec), and the chamber was fixed where the facial part of the radiation worker would be placed using the intraoral radiography equipment. The distances between the X-ray tube head and the phantom were set to 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm. The phantom was radiated 20 times with each examination condition and the average scattered doses were examined. The rate at the distance of 40cm decreased by about 92.6% to 7.43% based on the scattered rays radiated at the distance of 10cm under the adult conditions. The rate at the distance of 40cm decreased by about 97.6% to 2.58% based on the scattered rays radiated at the distance of 10cm under the children conditions. Protection from the radiation exposure was required during the dental radiographic examination.
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문제 정의
The purpose of the study was to investigate the radiation exposure to the face of radiation personnel and measure the scattered rays received by the radiation worker during the intraoral radiography.
The study seeks to find out the optimal condition to protect from the risk in the exposure by comparing the measured values depending on the location and the distance after measuring the scattered rays. The experiment measured the scattered rays primarily hit and scattered from the object rather than the experiment measuring the risk in the exposure to the direct radiation18).
제안 방법
However, the risk extends to radiological technologists. Against this backdrop, this study examined the changes in the decrease in the facial exposure dose for the radiological technologists depending on increasing the distance between the radiological technologists and the X-ray tube head during the intraoral radiography. The rate at 40cm decreased by about 92.
The shooting examination was configured to the maxillary molars for adults (60kVp, 10mA, 50msec) and children (60kVp, 10mA, 20msec), and the chamber was fixed where the facial part of the radiation worker would be placed. The distances between the X-ray tube head and the phantom were set to 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm, and the phantom was radiated 20 times with each examination condition and the average scattered doses were examined. Fiele size is 3×4 cm2 .
The study seeks to find out the optimal condition to protect from the risk in the exposure by comparing the measured values depending on the location and the distance after measuring the scattered rays. The experiment measured the scattered rays primarily hit and scattered from the object rather than the experiment measuring the risk in the exposure to the direct radiation18). Radiation intensity and dose decreased with increasing distance.
2). The shooting examination was configured to the maxillary molars for adults (60kVp, 10mA, 50msec) and children (60kVp, 10mA, 20msec), and the chamber was fixed where the facial part of the radiation worker would be placed. The distances between the X-ray tube head and the phantom were set to 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm, and the phantom was radiated 20 times with each examination condition and the average scattered doses were examined.
대상 데이터
The experiment equipment was an IntraOral or Heliodent DS device (Sirona, Germany) and the dose measuring instrument was a Victoreen® NERO® mAx X-ray test device, model 8000 (FLUKE Biomedical, USA) equipped with a 400 cm3 external scatter ionchamber (FLUKE Biomedical) to measure the secondary scattered rays.
데이터처리
The annual average number of patients under the intra-oral radiation examination for 3 years from 2011 to 2013 was 2,870 including 951 children. ANOVA test of SPSS Win 17.0 was used to investigate the difference in the average scattered rays for each distance and post-hoc analysis was performed with the Dunnett test to investigate more accurate differences. It was considered significant if the p value was < 0.
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