Ischemic stroke, refers to the corresponding neurologic deficits caused by the interruption of cerebral artery blood flow and the subsequent hypoxic-ischemic necrosis of local brain tissue because of various reasons. It is commonly found in elderly people who suffer from arteriosclerosis along with hypertension, coronary heart disease, or diabetes.
Intracranial aneurysm refers to the gradually generated abnormal bulges of Intracranial arterial vessel caused by the local damage of intracranial artery vessel wall due to congenital anomalies or acquired injuries under the haemodynamic load and other factors.