Inclusion and exclusion criteria for patient selection
| Inclusion Criteria | Exclusion Criteria |
|---|---|
| Image-based evidence of a sidewall intracranial aneurysm interventionally treated only by using a FD in our institution | Unavailable aneurysm-related 4D PC MRI data |
| No history of related subarachnoid hemorrhage or other rupture clues | Fusiform aneurysms without a well-defined ostium |
| No previous invasive treatment for target aneurysm | Undesirable deployment of FD |
| Preprocedural acquisition of 4D PC MRI and 3D RA, and at least CE MR imaging or DSA follow-up with conclusive results at 6 or 12 months | Missing all scheduled follow-ups |
Note:—CE indicates contrast-enhanced.