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Title: Evaluation of manual vs semi-automated delineation of liver lesions on CT images
Authors: Bellon, Erwin ×
Feron, Michel
Maes, Frederik
Van Hoe, Lieven
Delaere, Dominique
Haven, F
Sunaert, Stefan
Baert, Albert
Marchal, Guy
Suetens, Paul #
Issue Date: Jan-1997
Series Title: European radiology vol:7 issue:3 pages:432-438
Abstract: In this paper we compare a semi-automated delineation method with totally manual delineation for area quantification, with respect to efficiency, quality, and intra- and interobserver variability. Liver lesions on 28 CT images were delineated by three observers, twice using completely manual delineation and twice using a semi-automated method. Quantitative comparisons were performed with respect to delineated area and time required for the delineation tasks. Subjective comparisons were performed with respect to efficiency and perceived quality of the semi-automated method. The areas obtained using semi-automated delineation were significantly smaller (11 %) than those obtained using totally manual delineation. Intraobserver and interobserver variability with the semi-automated method were approximately three times lower than with manual delineation. Efficiency of the semi-automated method was subjectively rated favorable, although further improvements are possible. With respect to quality, the semi-automated method was ranked better than the manual method in 73 % of cases.
ISSN: 0938-7994
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Radiology
ESAT - PSI, Processing Speech and Images
Translational MRI (+)
Faculty of Medicine - miscellaneous
× corresponding author
# (joint) last author

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