The Clinical Benefit and Risk of Oral Aspirin for Patients Who Have Unruptured Intracranial Aneurysm Combined With Cerebral Ischemia

The investigators try to collect the information of the patients have unruptured intracranial aneurysm combined with cerebral ischemia when oral aspirin.The characteristics of this study are large sample, multi center and prospective.In the real world, more and more patients are checked out unruptured intracranial aneurysm combined with cerebral ischemia.The investigators can collect the information such as how they use aspirin (dose, frequency, duration of treatment), demographic information, past history, daily life habits, morphological characteristics of the aneurysm, how they use other antithrombotic drugs.The investigators will record whether the aneurysm ruptured and have hemorrhage, ischemic stroke, death, changes in the morphology of aneurysm, MRI permeability image index changes. Finally the investigators will get the clinical benefits and risks of using aspirin and build the prediction model of rupture and hemorrhage for aneurysm, find out who is suitable for oral aspirin.