Stenting of stenotic or occluded vessels Stenosis and occlusion are important causes of cerebral blood supply deficiency and even severe cerebral infarction, and timely treatment of related stenosis and occlusion can improve brain function and prevent cerebral infarction. Our department is currently able to perform angioplasty stenting for stenosis and even occlusion of blood vessels. How do I know if I have a cerebral artery stenosis? There are two types of patients with cerebral artery stenosis: those who are asymptomatic and those who are symptomatic. If you are a person who values your quality of life, especially if you are over 50 years old and have hypertension, diabetes, coronary artery or peripheral arteriosclerosis, you should undergo some necessary tests such as cerebral artery ultrasound or magnetic resonance neck angiography. Symptomatic patients mostly present with sudden dizziness, black vision in one eye, numbness and weakness in the arms and legs, and slurred speech. This symptom may appear for a few minutes or hours, but disappears completely within 24 hours, which is often referred to as a “mini-stroke”. CT scan, magnetic resonance imaging (MRI), cerebral angiography, carotid ultrasound and TCD are commonly used. Carotid artery stenosis and ischemic stroke Stroke is the number one cause of death in China. With an incidence of up to 50% in people over 65 years of age, the prognosis is often severe. In addition to death, stroke may also cause sequelae such as hemiplegia, aphasia and dementia. Strokes are divided into two categories: ischemic strokes (70%-80%) and hemorrhagic strokes (20%-30%). Among them, ischemic stroke is caused by ischemia in the brain due to blockage of carotid artery or intracranial vessels, so treatment of carotid artery stenosis and intracranial artery stenosis is an important means to prevent strokes.