이동형 방사선 차폐장치의 성능평가에 관한 연구

• 영문명: A Study on the Performance Evaluation of Portable Radiation Shielding Apparatus
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 구본열(Koo Bon-Yeoul) 한상현(Han Sang-Hyun)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제41권 제4호, 289~295쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2018.08.30

국문 초록

When using a mobile X-ray unit, primary radiation creates medical images and secondary radiation scatters in many directions, which reduces image quality and causes exposure to patients, care givers and medical personnel. The purpose of this study was to develop a radiation shielding system for effectively shielding secondary radiation and evaluate its effectiveness. Using a mobile X-ray unit, spatial dose according to presence of human equivalent phantom and spatial dose using the developed shielding device were measured, and the phantom at 80 cm equidistance from center of X-ray was compared with spatial dose according to use of a shield. Measurements were taken at intervals of 10 cm every 30° from the head direction(-90°) to the body direction(+90°). In the spatial dose measurement with and without the phantom, when the human equivalent Phantom was used, the spatial dose was increased by 40% in all directions from 40 cm to 100 cm from the central X-ray, and about 88% of the space dose was reduced when using the developed shields with the phantom. The equidistance dose at 80 cm from the central X-ray was increased by 39% from 5.1±0.26 μ Gy to 7.1±0.15 μGy when the human equivalent phantom was used, and when phantom was used and shielding was used, the spatial dose was reduced by about 90% from 7.1±0.15 μGy to 0.7±0.07 μGy. The spatial dose of natural radiation was measured to be about 0.2±0.04 μGy when using the developed shielding with Phantom at a distance of 1 m or more. It is expected that by using the developed shielding system, it will be possible to effectively reduce secondary radiation dose received in all directions and to ensure safe imaging.

목차

Ⅰ. 서 론

Ⅱ. 연구 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

Mobile X-ray Secondary Radiation Radiation Shield Spatial Dose Exposure Dose 이동형 X선 장치 2차 방사선 방사선 차폐 공간선량 피폭선량