A Study of Choydar Flow-Directed Mesh Stent in the Treatment of Unruptured Intracranial Aneurysms

The purpose of this study is to assess how safe choydar flow-directed mesh stent is and how well it works in the treatment of unruptured intracranial aneurysms (a condition in which a bulging blood vessel in the brain can burst and cause bleeding) in a real-world setting.

Inclusion criteria: Participants meeting all the following inclusion criteria will be included: Preoperative inclusion criteria: * Presence of unruptured aneurysms in the internal carotid artery (from the petrous segment to the distal end) or vertebral artery identified by digital subtraction angiography (DSA), computed tomography angiography (CTA), or magnetic resonance angiography (MRA) prior to surgery, wide-neck (neck width greater than or equal to \[\>=\] 4 millimeters \[mm\] or dome-to-neck ratio less than \[\= 2.0 mm and less than or equal to \[\= 4 mm or dome-to-neck ratio \= 2.0 mm and \