소아 두부 CT에서 의료방사선 피폭선량 평가 (Evaluation of Medical Radiation Exposure Dose on Pediatric Head CT)

서지정보

· 발행기관 : 국제차세대융합기술학회
· 수록지 정보 : 차세대융합기술학회논문지 / 4권 / 5호 / 523 ~ 531페이지
· 저자명 : 김도훈, 이상헌, 이효영

초록

질병관리본부에서 제공하는 CT 방사선량 측정 시뮬레이션 프로그램인 ALARA CT S/W를 이용하여 소아 Brain CT 검사 시 측정된 방사선량을 실제 의료기관에서 발생되는 방사선량과 비교 분석하였다. 1그룹(0-1세), 2그룹(2-5세), 3그룹(6-10세), 4그룹(11-15세)로 나누어 검사를 진행하였고 측정된 방사선량은 전산화단층촬영 선량 지표인 CTDI(Computed Tomography Dose Index)와 DLP(Dose Length Product)로 표기하였다. ALARA CT의 측정값이 실제 의료기관 장비의 방사선량보다 평균적으로 약간 높았지만 서로 유의미한 차이가 없었으며, 검사 범위 1cm당 1그룹은 13.06 mGy*cm, 2그룹은 15.13 mGy*cm, 3그룹은 17.25 mGy*cm, 4그룹은 23.76 mGy*cm만큼의 DLP가 증가, 감소하였음을 확인하였다. 또한 일개 병원에서 시행되는 소아 두부 CT의 방사선 피폭선량은 영국, 독일, 일본에서 권고되는 진단참고수준(Diag nostic Reference Level, DRL)보다 낮은 방사선량으로 검사가 진행됨을 확인하였다.

영어초록

Using ALARA CT S/W, a CT radiation dose measurement simulation program provided by the Korea Centers for Disease Control and Prevention, the measured radiation dose during childhood Brain CT examinations was compared with the radiation dose generated by the actual medical institution. Tests were conducted in groups 1 (0-1), groups 2 (2-5), groups 3 (6-10), and g roups 4 (11 -1 5) , and the measured radiation dose was marked as Computed Tomography Dose Index (CTDI) and DLP (Dose Length Product), which are indicators of computed tomography dose. On average, ALARA CT measurements were slightly higher than the actual dose of radiation from medical institution equipment, but there were no significant differences from each other, confirming that DLP increased or decreased by 13.06 mGy*cm in group 1 per centimeter, 15.13 mGy*cm in group 2 and 17.25 mGy*cm in group 3 and 23.76 mGy*cm in group 4. It was also confirmed that the radiation dose measurement results of domestic medical institutions were compared with the Diagnostic Reference Level (DRL) in computed tomography in the UK, Germany , and Japan to comply with the domestic and international pediatric diagnostic reference level limit values. Based on this, we wanted to discuss the possibility of clinical use of radiation dose measurement programs.

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