Chronological Changes in Intra-aneurysmal Signal Intensity on T1-weighted Black Blood Images after Endovascular Treatment for Unruptured Intracranial Aneurysms.

ABSTRACT: Intra-aneurysmal thrombus formation is crucial for the healing of endovascularly treated aneurysms. This study evaluated whether T1-weighted black blood imaging can monitor thrombus formation by examining the relationship between chronological signal intensity changes and aneurysm occlusion status after flow diverter stenting and coil embolization. We retrospectively analyzed 78 patients with 83 aneurysms (flow diverter stenting: 28, coil embolization: 55) who underwent T1-weighted black blood imaging at 1 week, 3 months, and 6 months post-treatment. Relative signal intensity was calculated as the signal intensity of the aneurysmal sac divided by the signal intensity of the genu of the corpus callosum. Satisfactory occlusion (O'Kelly-Marotta grades C or D) at 6 months was the primary endpo

SUBMITTER: Hashimoto Y 

PROVIDER: S-EPMC12682430 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature