Paper Info
Title
Experts vs. novices: applying eye-tracking methodologies in colonoscopy video screening for polyp search
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.
Year
DOI
Venue
2014
10.1145/2578153.2628811
ETRA
Keywords
Field
DocType
dwelling time,polyp search,reaction time,visual search pattern,colonoscopy video,different video sequence,diverse level,energy concentration ratio,experimental result,eye-tracker device,colonoscopy video screening,eye-tracking methodology
Visual search,Computer vision,Fixation (psychology),Colonoscopy,Salience (neuroscience),Simulation,Medical imaging,Computer science,Eye tracking,Ground truth,Artificial intelligence
Conference
Citations 
PageRank 
References 
1
0.42
8
Authors
6
Name
Order
Citations
PageRank
Jorge Bernal120.77
F. Javier Sánchez2465.05
Fernando Vilariño326322.08
Mirko Arnold4292.70
Anarta Ghosh515613.81
Gerard Lacey617122.17