CRT diagnosis of pulmonary disease: influence of monitor brightness and room illuminance on observer performance.
Using a 21-in. cathode ray tube (CRT) monitor (2048 x 2560 x 8bits), six radiologists interpreted 12 images with interstitial lung disease under six conditions of CRT luminance (50 and 400 cd/m(2)) and room illuminance (20, 120 and 480lx), and 10 radiologists interpreted 25 images with pulmonary nodules under nine conditions of CRT luminance (50, 200 and 500 cd/m(2)) and room illuminance (20, 120 and 480lx). Observer's performance for interstitial disease was relatively better at 120lx. Four hundred and eighty lux illuminance with 50 cd/m(2) CRT luminance, which degraded the detectability of pulmonary nodule significantly (p<0.05), should be avoided for clinical use.
Ishihara
Shunichi
S
Department of Radiology, Nagoya University School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan. s-ishihara@mub.biglobe.ne.jp
Shimamoto
Kazuhiro
K
Ikeda
Mitsuru
M
Kato
Katsuhiko
K
Mori
Yoshine
Y
Ishiguchi
Tsuneo
T
Ishigaki
Takeo
T
D003626:Data Display; D006801:Humans; D008029:Lighting; D017563:Lung Diseases, Interstitial / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic