A Retrospective, Multicenter, Controlled Clinical Trail: to Evaluate the Efficiency and Safety of Intracranial Aneurysm Assistive Software in the Preoperative Assessment

Inclusion Criteria: 1. aged 18-80y, no gender limitation. 2. non-ruptured intracranial saccular aneurysm with specific intracranial CTA images; Target aneurysm has performed intravascular coiling treatment. 3. intracranial aneurysm diameter range from 3mm to 10mm. 4. the shape of aneurysm is regular without daughter sac or more than 2 lobulations. Inclusion criteria of images: 1. the number of detector rows of Computed Tomography(CT) is more than 16 rows. 2. slice thickness ≤ 0.625mm, whole-brain image is considered. 3. Both plain scan sequences and enhancer sequence are required. Exclusion Criteria: 1. combined with cerebral hemorrhage; 2. combined with cerevascular malformation or cerebral occupying lesion; 3. fusiform aneurysm or dissection aneurysm; 4. significant proximal stenosis of parent artery; 5. intracaverous internal carotid artery aneurysm; 6. target aneurysm has been performed flow-diverter stents treatment. Exclusion criteria of images: 1. none DICOM format; 2. quality score less than 3 scores; 3. metal artifacts existance.