title: Influence of monitor luminance change on observer performance for detection of abnormalities depicted on chest radiographs.
abstract: OBJECTIVE
  To investigate how changes in luminance affect the detection accuracy of radiologists viewing chest radiograph images on high-resolution CRT monitors.
  
  
  METHODS
  Thirteen radiologists performed a detection task for 11 chest radiograph images with simulated nodules on a monitor with 11 luminance conditions (the maximum luminance ranges from 157.4-369.0 candela/m2) simulating CRT degraded by long-term usage, under the ambient illumination of 200 lux; the observation order was always from the darkest to the brightest.
  
  
  RESULTS
  There was a statistically reliable effect of the 11 monitor display conditions on the detection of nodules (P < 0.001). In the conditions in which the maximum luminance of the CRT was 60.7% or below that of the standard display luminance, the correctly detected nodule number reliably deteriorated.
  
  
  CONCLUSIONS
  The luminance change in CRT monitor display under long-term usage will have a detrimental effect on nodule detection performance in chest radiograph images.
authors.affiliation: Department of Medical Information and Medical Records, Nagoya University Hospital, Japan. a40495a@nucc.cc.nagoya-u.ac.jp
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Ikeda
authors.forename: Takeo
authors.initials: T
authors.lastname: Ishigaki
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Shimamoto
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Kodera
authors.forename: Shuji
authors.initials: S
authors.lastname: Koyama
authors.forename: Hisashi
authors.initials: H
authors.lastname: Usami
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Kato
mesh_terms: D003626:Data Display / Q000009:adverse effects*; D003951:Diagnostic Errors; D006801:Humans; D008027:Light / Q000009:adverse effects*; D013902:Radiography, Thoracic / Q000295:instrumentation*; D011873:Radiology Information Systems / Q000295:instrumentation; D013647:Task Performance and Analysis; D013896:Thoracic Diseases / Q000000981:diagnostic imaging*; D013997:Time Factors