Display method can affect interobserver agreement: comparison of 'zoom-and-pan' and 'browse-and-paste' for primary CT interpretation. |
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| Authors: | H Hirota K Shimamoto M Ikeda T Ishigaki K Maruyama T Yamada H Satake T Ishiguchi Y Takahashi E Nishihara |
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| Affiliation: | Department of Radiology, Nagoya University School of Medicine, 65 Tsuruma-cho, Showa-ku, 466-8550, Nagoya, Japan. |
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| Abstract: | 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. |
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