Earticle

초록

영어

I. Objective The composition method with acquiring 2 〜5 images not only lack perfection in compensating the geometrical distortion but could also cause inaccurate connection problem of continuing bone structure due to the enlargement ratio difference of ruller and bone, density difference in image composition process. This paper studies those mentioned problems through the experiments. n. Object and method Experiment 1 After attaching 3 step wedge(Pb) on detector and 2 ruller on upper, lower part of the step wedge, we have exposed them to create density difference between 1st image and 2nd image, then examined if there were any errors. Experiment 2 1st 100cm ruller was attached on the center of detector, and by escalating the distance between 2nd 100cm ruller and detector 5cm, 10cm, 15cm respectively, we investigated if there were any errors caused by enlargement ratio. Experiment 3 The ruller was placed on detector, a joint photographing was performed through spot photographing after fully operating the electric field photographing to include hip joint 〜 ankle joint part and we have conwed the values from two methods. HI. Result : A horizontal axis error was caused 난ten photographing is not operated in equal density since the image shifted horizontally in accordance with the difference of Pb step wedge phase 1 due to the density difference, as the result of Experiment 1. Result of experiment 2, refer to the table below, Result of experiment 3, refer to the table below IV. Conclusion The horizontal axis error was caused by density difference, as the result of experimentl, an error was also caused by enlargement ratio difference of ruller and bone, as the result of experiment 2 and in experiment 3, vertical axis error was caused by geometrical distortion. Through these experiments, we came up with the methods of calculating precise enlargement ratio of detector and bone structure through composition acquired 2—5 images of pa仕ent's frontal, lateral images and also by measuring the exact length of the bone through spot photographing. However, those methods could not guarantee the accurate condensation due to increasing radiation exposure level and the flexion from articular surface within bone anatomy structure. Current method, the composition of acquired 2 〜5 images, requires the solution for described problems of the experiment results.

목차

Abstract
I. 서론
II. 대상 및 방법
III. 결과
IV. 고찰
V. 결론
참고문헌

키워드

저자

• 이광재 [ Lee, Gwang-Jae | 을지병원 영상의학과 ] 책임저자
• 고신관 [ Go, Shin-Guan | 을지대학교 방사선학과 ]
• 김욱동 [ Uk-Dong • Kim | 을지병원 영상의학과 ]
• 김시돈 [ Shi-Don • Kim | 을지병원 영상의학과 ]
• 김형섭 [ Kim, Hyung-Seop | 을지병원 영상의학과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한디지털의료영상학회논문지 [Korean Journal of Digital Imaging in Medicine]

• 간기

  연3회

• pISSN

  1976-7641

• 수록기간

  1995~2026

• 십진분류

  KDC 510 DDC 610