방사선 종사자 근무 분야별 피폭에 관한 검토

Radiation Exposure According to Radiation Technologist' Working Departments

본 논문은 2006. 1. 1${\sim}$12. 31(1년)까지 방사선 종사자 근무분야별 피폭에 관하여 서울시내 3차 의료기관인 A, B, C병원의 방사선 분야 종사자 방사선 피폭선량에 대한 분석 결과, 다음과 같은 결론을 얻었다. 1. 방사선 종사자 근무분야별 피폭은 심혈관조영실이 1.41mSv로서 제일 많았고, 방사선종양학과는 0.64mSv로서 제일 낮았다. 2. 방사선 종사자 근무분야별 피폭선량은 시술건수에 비례하였다. 3. 방사선 종사자 근무분야별 시술건수 당 피폭선량은 심혈관조영실 근무자가 많았고, 영상의학과 근무자는 적은 것으로 나타났다. 4. 방사선 종사자 근무분야별 피폭선량 순위는 심혈관조영실, 핵의학과, 영상의학과, 방사선종양학과의 순이었다. 이상과 같은 결과로 볼 때, 국제방사선방어위원회(ICRP) 권고안 범위이내이므로 병원 방사선 종사자들의 피폭에 따른 유해는 없는 것으로 판단되었다.

Radiation dose to radiologists working at three hospitals in Seoul was investigated from Jan 1, 2006 to Dec. 31, 2006. The results are as follows. First, radiation dose to radiologists at a cardiac angiography room was measured as 1.41mSv, the highest while radiation dose to radiologists at a department of radiation oncology was measured as 0.64 mSv, the lowest. Second, radiation dose proves to be in direct proportion to the number of X-ray treatment. Third, as for the radiation dose in X-ray treatments, radiologists in cardiac angiography room are exposed to the largest amount of radiation while radiologists in diagnostic radiology department are exposed to the smallest amount of radiation. Last, radiation dose at a cardiac angiography room is the largest and is followed by nuclear medicine, diagnostic radiology, and radiation oncology departments in order. According to ICRP, exposure less than 20mSv per year is highly recommended while radiation dose is allowed as long as it is ranged less than 50mSv per year or 100mSv within a 5-year period. Taking into account the results, radiation exposure does not do any harm to radiologists at any related departments in Korean hospitals because the dose per year is less than 1.60mSv.