Table 5:

Analysis of the VGG-19 based CNN tested on all 9 + 11 videos after training on the 8641 colonoscopy images. CNN-assisted expert review annotations were used as reference. The delay to detection * of a polyp is the time span between a polyp entering the field of view of the camera for the first time and the CNN producing its first positive polyp prediction. All false positives with duration of 1+ seconds are counted. A frame-by-frame analysis of the video study can be found in Supplementary Table 3. “Challenging videos” were produced by an expert colonoscopists who performed “flybys” that included but avoided inspection of known polyps to mimic missed polyp scenarios.

	9 Videos	11 “Challenging” Videos
Total polyps found	45	68
Total polyps missed	0	5
Total False positives	81	46
Avg. delay to detection*	0.2 ± 0.1 sec	1.3 ± 0.3 sec