Fig. 4.

Illustration of the matching process highlighting the procedure performed in cases where an already matched AcomA was selected as the most similar IA for more than one AOI. Initially, a total of 10 AcomA were identified as the nearest aneurysms, and they were already included in the cohort through matching with another AOI, as depicted in the cases WI300462-HU250357. To ensure an accurate selection process, subsequent matches were considered in descending order (cases SK020567-KH19084). The goal was to find the best match that had not been assigned to another AOI. In this manner, the most suitable AcomA aneurysms were chosen for inclusion in the cohort. Among the cases analyzed, the second-nearest AcomA was selected in 6 instances. In 2 cases, the fourth-nearest AcomA was chosen, while in 2 other cases, the fifth-nearest AcomA was selected