Figure 3.

Example of segmentation of operator 1 (left) and operator 2 (right). The separate segmentations are referred to “only vessel” in blue, “aneurysm sac” in yellow, and “vessel adjacent to aneurysm sac” in orange. Total volume of method 1 (entire ICA) is calculated by adding up the volumes of all three separate segmentations. Total volume of method 2 (solely  the ECAA) is calculated by adding up the volumes of “aneurysm sac” and “vessel adjacent to aneurysm sac”.