Participants
aneurysm, intracranial lesion, unruptured intracranial aneurysm, cerebral arteriovenous malformation, stenosis
ANEURYSM, STENOSIS
At each clinical center, eligible patients were screened if they met any of the following criteria: The patient was aged 18 to 80; ruptured (World Federation of Neurologic Societies grade < IV) or unruptured intracranial aneurysm, as demonstrated by computed tomography angiography (CTA), magnetic resonance angiography (MRA) or digital subtraction angiography (DSA); complete aneurysm cure with one treatment; the diameter was < 5 mm; and written formed consent before enrollment. Ineligible patients were excluded according to the following criteria: any contraindications for endovascular treatment, angiography, or anesthesia; severe stenosis or occlusion in the parent vessel; and the presence of a cerebral arteriovenous malformation or an intracranial lesion.