Experts vs. novices: applying eye-tracking methodologies in colonoscopy video screening for polyp search
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2014Access:
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Bernal, J., Sánchez, J., Vilariño, F., Arnold, M., Ghosh, A. & Lacey, G., Experts vs. novices: applying eye-tracking methodologies in colonoscopy video screening for polyp search, Proceedings of the Symposium on Eye Tracking Research and Applications, Eye Tracking Research and Applications (ETRA), Safety Harbor, Florida, USA, March 26-28, Pernilla Qvarfordt, Dan Witzner Hansen, ACM, 2014, 223 - 226Download Item:
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Abstract:
We present in this paper a novel study aiming at identifying the differences
in visual search patterns between physicians of diverse levels
of expertise during the screening of colonoscopy videos. Physicians
were clustered into two groups -experts and novices- according
to the number of procedures performed, and fixations were captured
by an eye-tracker device during the task of polyp search in
different video sequences. These fixations were integrated into heat
maps, one for each cluster. The obtained maps were validated over
a ground truth consisting of a mask of the polyp, and the comparison
between experts and novices was performed by using metrics
such as reaction time, dwelling time and energy concentration ratio.
Experimental results show a statistically significant difference
between experts and novices, and the obtained maps show to be a
useful tool for the characterisation of the behaviour of each group.
Author's Homepage:
http://people.tcd.ie/gjlacey
Author: Lacey, Gerard; Bernal, Jorge; Sánchez, Javier; Vilariño, Fernando; Arnold, Mirko; Ghosh, Anarta
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Proceedings of the Symposium on Eye Tracking Research and ApplicationsEye Tracking Research and Applications (ETRA)
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ACMType of material:
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Full text availableKeywords:
Saliency, Eye-tracking, Experts, Novices, Medical imaging, Polyp, ColonoscopyLicences: