Journal of the Korean Society of Radiology (한국방사선학회논문지)
- Volume 1 Issue 1
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- Pages.31-37
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- 2007
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- 1976-0620(pISSN)
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- 2384-0633(eISSN)
Quantitative Analysis and Comparison of DR and CR image quality
CR과 DR 영상화질의 정량적 비교분석
-
Park, Hey-Suk
(Department of Radiological Science, Yonsei University)
;
- Seo, Jang-Yeon (Department of Radiological Science, Yonsei University) ;
- Jeong, Jin-Hwa (Department of Radiological Science, Yonsei University) ;
- Lee, Chang-Lae (Department of Radiological Science, Yonsei University) ;
- Cho, Hyo-Min (Department of Radiological Science, Yonsei University) ;
-
Kim, Hee-Joung
(Department of Radiological Science, Yonsei University)
-
박혜숙
(연세대학교 방사선학과)
;
- 서장연 (연세대학교 방사선학과) ;
- 정진화 (연세대학교 방사선학과) ;
- 이창래 (연세대학교 방사선학과) ;
- 조효민 (연세대학교 방사선학과) ;
-
김희중
(연세대학교 방사선학과)
- Published : 2007.05.31
Abstract
The purpose of this research was to compare and analyze image quality for each Detector of CR(Computed Radiography) and DR(Digital Radiography). The results showed that CR(AGFA MD 4.0 General plate, JAPAN) was superior to DR(HOLOGIC nDirect Ray, USA) based on the quantitative values and comparison of MTF(Modulation Transfer Function), NPS(Noise Power Spectrum), Photon fluence and DQE(Detective Quantum Efficiency) which have been widely accepted for the estimation of CR and DR. Quantitative evaluations of CR and DR system were obtained and they may be very helpful for QA and QC of general X-ray systems.
본 연구의 목적은 CR(Computed Radiography)과 DR(Digital Radiography)장비의 각 Detector를 통해 획득된 영상의 화질을 비교 분석하기 위한 것이다. CR(AGFA MD 4.0 General plate, JAPAN)과 DR(HOLOGIC nDirect Ray, USA)에 대한 영상평가의 주요인자인 MTF(Modulation transfer function), NPS(Noise power spectrum), Photon fluence, DQE(Detective quantum efficiency)를 정량적인 값으로 도출하여 비교한 결과 CR이 DR보다 우수하게 나타났다. 본 연구의 결과는 CR과 DR장비의 Image quality를 정량적으로 평가할 수 있을 뿐만 아니라 이 장비들을 유지, 보수하는데도 도움이 될 것으로 사료된다.