Evaluation of displays for medical x-ray applications using observer performance

Patrik Sund, Markus Håkansson, Lars Lindskog, Ulf Tylen, Susanne Kheddache, Lars Gunnar Månsson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


A physical and clinical evaluation of four different display systems intended for the presentation of medical x-ray images was performed. State-of-the-art b/w display devices were studied as well as a low-cost color display. The systems tested were: a) CRT 21″ b/w 1 K, b) CRT 21″ b/w, 2 K, c) CRT 21″ color, 1 K, d) LCD 20.8″ b/w, 1.5 K. All displays were adjusted to conform to DICOM 3.0 part 14. The physical evaluation included quantities such as resolution, flickering and uniformity. The clinical evaluation was performed by 15 radiologists using visual grading analysis of one phantom chest image and 12 clinical images of the chest and small bones. One subtle pathological structure and one anatomical structure were rated. The CRT b/w 1 K display was used as the reference display system. All displays were evaluated at two different luminance levels (160 and 320 cd/m 2) and viewed under two different ambient light conditions (10 and 40 lux). The LCD 1.5 K display was rated best and the color CRT display was rated worst for both luminance levels. The result for the color CRT display - unable to produce more than 120 cd/m 2 - at the high ambient light setting was very poor.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsD.P. Chakraborty, E.A. Krupinski
Number of pages6
StatePublished - 2002
Externally publishedYes
EventMedical Imaging 2002: Image Perception, Observer Performance, and Technology Assessment - San Diego, CA, United States
Duration: Feb 26 2002Feb 28 2002


OtherMedical Imaging 2002: Image Perception, Observer Performance, and Technology Assessment
Country/TerritoryUnited States
CitySan Diego, CA


  • CRT
  • Display
  • Flat panel
  • Image quality
  • LCD
  • Monitor
  • Visual grading analysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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