Fig. 1.

Regions of interest (ROIs) in normalized EPI images and segmentation. Example image: 53 × 63 × 52 (x/y/z dimension). Left ROI: [−48 to −18] × [45 to 74] × [−50 to −26] and right ROI [21 to 51] × [47 to 74] × [−50 to −26]. Defined ROIs are shown in the upper row in white rectangles. Segmented bulbs are shown in the lower row and highlighted in white