Fig. 3.

Heatmap visualizations of IAs with their pairwise color-coded Euclidean distance of the morphological data. Aneurysms are sorted based on the average sum of their pairwise similarity, i.e., aneurysms on the upper left of the heatmap are very similar to all other cases, whereas aneurysms at the bottom right are not very similar to any other cases. Left, the heatmap for all IAs is shown. The AOI is marked with arrows, and aneurysm with id 44 (arrowhead) has the lowest similarity to all other aneurysms. To account for possible outlier aneurysms, only a user-defined number of aneurysms is kept for the subsequent analyses. For 20 aneurysms (see dashed rectangle on the left), the heatmap is depicted on the right