Early Complications After Flow Diverter Versus Stent-Assisted Coiling for Unruptured Wide-Neck Intracranial Bifurcation Aneurysms

Inclusion Criteria: * Voluntarily provides written informed consent. * Aged 18 to 75 years. * Diagnosed by CTA, MRA, or DSA as having an unruptured, bifurcation, saccular, wide-neck intracranial aneurysm. * Able to understand the purpose of the study. Exclusion Criteria: * Patients with two or more multiple aneurysms, all of which require treatment within 1 year. * Patients with other cerebrovascular diseases such as arteriovenous malformation or moyamoya disease. * Patients with ruptured aneurysms or narrow-neck aneurysms. * Patients who experienced stroke, including cerebral hemorrhage or cerebral infarction, within the past 1 month. * Patients with poor clinical condition, defined as modified Rankin Scale score ≥3. * Patients who have already planned to undergo surgical or interventional treatment within 3 months. * Patients considered by the investigator to be unsuitable for endovascular treatment, such as those with no suitable vascular access, excessively tortuous vessels, or difficulty in stent delivery. * Patients unsuitable for anesthesia or endovascular treatment, including those with major heart, lung, liver, spleen, or kidney disease, brain tumor, severe active infection, disseminated intravascular coagulation, or a history of severe psychiatric disorder. * Patients unable to receive antiplatelet or anticoagulant therapy. * Patients with a previous or possible severe reaction to contrast agents that would prevent completion of pre-treatment medication or treatm…