Earticle

초록

영어

Amount of radiation exposure by seeing through fluoroscopy examination while is many patient exposure administration and unprepared misgovernment be. In this study, abdominal fluoroscopy during the scan, the dose and image quality change according to the use of grid and added filter optimized by measuring the test condition is proposed. Uses seeing through fluoroscopy examination equipment of Image Intensifier of Easy Diagnost Eleva (Philips), under tube type and uses Human phantom and measures average area dose according to grid insertion existence and nonexistence and added filter kind change. Measure sum of 29 organ dose and effective dose through PCXMC imagination simulation program and image J program through noise, SNR, image distortion was measured. Resolution, sharpness, and analyzed using the MTF curves. Fluorography the grid to insert the filter thickness and thickening and increased the average area dose and organ doses and effective dose. In the case of spot examination, when inserted grid, average area dose and organ dose and effective dose increased. Filter thickens the average area dose decreased, but the organ doses and effective dose were increased when use 0.2mmCu+1mmAl filter, decreased slightly. Noise and SNR measurements without inserting the gird, if you do not use the added filter was the lowest and when measure the distortion, 0.1mmCu+1mmAl filter was no difference of image quality in case insert grid was judged that when did not use occasion added filter that do not use grid, difference of image quality does not exist. Did not show a big difference, according to the grid and uses of the added filter sharpness, and resolution. Patient dose increases with factors that reduce the quality of the image so reckless grid and the use of the added filter when abdominal fluoroscopy examination should be cautious in using.

목차

Abstract
Ⅰ. 서론
Ⅱ. 대상 및 방법
1. Fluorography와 spot 검사의 면적선량 평가
2. 가상시뮬레이션 프로그램을 통한 장기선량및 유효선량 평가
3. Spot 영상의 noise 및 SNR 평가
4. Spot 영상의 SNR, PSNR 비교를 통한 화질 평가
5. Modulation Transfer Function (이하 MTF)곡선을 통한 spot 영상의 해상력 평가
Ⅲ. 결과
1. Fluorography와 spot 검사의 면적선량 평가분석
2. 가상시뮬레이션 프로그램을 통한 장기선량및 유효선량 평가 분석
3. Spot 영상의 noise 및 SNR 평가 분석
4. Spot 영상의 SNR, PSNR 비교를 통한 화질평가 분석
5. Modulation Transfer Function (이하 MTF)곡선을 통한 spot 영상의 해상력 화질 평가분석
Ⅳ. 고찰
Ⅴ. 결과
참고문헌

키워드

저자

• 홍선숙 [ Seon Sook Hong | 서울아산병원 영상의학팀 ] Corresponding Author
• 강경미 [ Kyeong Mi Kang | 서울아산병원 영상의학팀 ]
• 성민숙 [ Min Suk Seong | 서울아산병원 영상의학팀 ]
• 이종웅 [ Jong Woong Lee | 강동경희대학교병원 영상의학과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한디지털의료영상학회논문지 [Korean Journal of Digital Imaging in Medicine]

• 간기

  연3회

• pISSN

  1976-7641

• 수록기간

  1995~2025

• 십진분류

  KDC 510 DDC 610