Where’s the naevus? Inter-operator variability in the localization of melanocytic lesion border

Background: 

The first step in the analysis of a dermatoscopically imaged melanocytic lesion is segmentation – informally, isolating those points in the image belonging to the lesion from those belonging to the surrounding non-lesional skin. Although typically studied in the context of automated analysis, segmentation is a necessary step even for human operators who plan to evaluate quantitative features of a lesion (such as diameter or asymmetry).



Methods: 

In a double blind evaluation of the segmentation of 77 digital dermatoscopic images, we observed a significant inter-operator variability.



Results: 

The area of the disagreement region was ...

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