Indications for whole brain angiography: 1. Intracranial and extracranial vascular diseases (1) Hemorrhagic diseases: intracranial aneurysm, carotid aneurysm, vertebral aneurysm; arteriovenous malformation, dural arteriovenous fistula, cavernous hemangioma, etc., forming subarachnoid hemorrhage and/or intracerebral hematoma. (2) Ischemic diseases: intracranial and extracranial vascular stenosis causes cerebral infarction with hemiplegic aphasia and other manifestations. (2) Intracranial tumor meningioma, vascular reticulocytoma, jugular venous bullae tumor, glioma, etc. 3.Head and neck vascular tumor nasopharyngeal fibrovascular tumor, carotid aneurysm, etc. Advantages of whole brain angiography: (1) Detailed changes of blood vessels can be observed from the arterial phase, capillary phase, venous phase and sinus phase. (2) It is possible to observe the vascular alignment dynamically and from multiple angles, and to act as a fluoroscopic eye. (3) Interventional treatment can be performed.