Proceedings of the Korean Society of Medical Physics Conference (한국의학물리학회:학술대회논문집)

Korean Society of Medical Physics (한국의학물리학회)
권호 표지

Performance Evaluation of Digital Radiography Antiscatter Grids using Film Digitizers

  • Lee, Hyoung-Koo (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Lee, Jung-Ae (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Kim, Sung-Hyun (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Ho, Dong-Su (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Kim, Do-Il (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Suh, Tae-Suk (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Choe, Bo-Young (Dept. of Biomedical Engineering, College of Medicine, The Catholic University of Korea) ;
  • Kim, Jin-Soo (Jungwon Precision Ind. Co.) ;
  • Kim, Jin-Won (Jungwon Precision Ind. Co.)
  • Published : 2002.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

We propose a method which can replace the DR when measuring performance evaluation parameters of antiscatter grids for DR. We used conventional x-ray films to produce grid images, which were scanned by a film digitizer. The digitizer could provide sampling interval of 87 micrometers and pixel depth of 12 bits. Grid line frequencies were measured using aliasing effect and non-uniformities of grids were measured by transforming scanned pixel values of film images into optical densities.

Keywords