Fig. 12.

ROPTool analysis comparison: ROPTool analysis of the mosaics of Fig. 10 and 11 as well as the best hand-picked frames from the corresponding videos: (a), (c) Hand-picked frames; (b), (d) Mosaics. Images are best viewed on screen. The blue lines inside the large blue circle indicate the vessel paths obtained with ROPTool. At least one, but preferably two major vessels from each quadrant are needed to provide a full ROP diagnosis. ROPTool is able to extract longer and more numerous vessels when analyzing the mosaics than the hand-picked frames. Furthermore, ROPTool analysis of the mosaics is faster due to fewer ROPTool mistakes. The examination times (in minutes) were: (a) 2:45, (b) 2:00, (c) 2:35, (d) 1:30