Display method can affect interobserver agreement: comparison of 'zoom-and-pan' and 'browse-and-paste' for primary CT interpretation.
Eight radiologists interpreted body CT images of 30 cases using a viewing station (six 17-in. monitors, 1024x1280). Using two different display methods, 'zoom-and-pan' and 'browse-and-paste', the readers described the presence or absence of liver tumors using a five-point rating scale and temporal changes between the current and previous studies using a seven-point rating scale. There was no significant difference in kappa values for tumor detection between the two display modes. However, in describing temporal changes, the kappa value of the browse-and-paste was significantly lower than that of zoom-and-pan (p<0.01). Browse-and-paste may have the disadvantage of greater interobserver variation.
Hirota
H
H
Department of Radiology, Nagoya University School of Medicine, 65 Tsuruma-cho, Showa-ku, 466-8550, Nagoya, Japan.
Shimamoto
K
K
Ikeda
M
M
Ishigaki
T
T
Maruyama
K
K
Yamada
T
T
Satake
H
H
Ishiguchi
T
T
Takahashi
Y
Y
Nishihara
E
E
D003626:Data Display; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D015588:Observer Variation; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D011871:Radiology / Q000379:methods; D011873:Radiology Information Systems; D014057:Tomography, X-Ray Computed / Q000379:methods*