Display method can affect interobserver agreement: comparison of 'zoom-and-pan' and 'browse-and-paste' for primary CT interpretation.

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.

• Authors: H Hirota, K Shimamoto, M Ikeda, T Ishigaki, K Maruyama, T Yamada, H Satake, T Ishiguchi, Y Takahashi, E Nishihara
• Journal: Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society (Comput Med Imaging Graph) 2001 Jul-Aug Vol. 25 Issue 4 Pg. 327-33 ISSN: 0895-6111 [Print] United States
• PMID: 11356325 (Publication Type: Comparative Study, Journal Article)

Topics

• Data Display
• Humans
• Liver Neoplasms (diagnostic imaging)
• Observer Variation
• Radiographic Image Interpretation, Computer-Assisted (methods)
• Radiology (methods)
• Radiology Information Systems
• Tomography, X-Ray Computed (methods)