How to check if there is insufficient blood supply to the brain

Vertebrobasilar artery insufficiency is a common clinical ischemic cerebrovascular disease, mainly due to the vertebrobasilar artery system blood supply disorder caused by the functional defect of brain tissue. The main manifestations are dizziness, headache, tinnitus, limited vision function, clinical treatment of vertebrobasilar artery insufficiency, early diagnosis, and effective treatment, can prevent brainstem ischemia, cerebellar ischemia, check vertebrobasilar artery insufficiency, can use tcd. Tcd of vertebrobasilar artery insufficiency is mainly characterized by decreased or increased blood flow velocity of vertebral artery or basilar artery. The hemodynamic changes of vertebrobasilar artery are mainly understood through the detection of blood flow velocity. Therefore, the blood supply conditions of brainstem, cerebellum and posterior part of brain can be comprehensively understood. It can also judge whether there is spasm, stenosis, sclerosis and insufficient blood supply in arteries through understanding blood flow direction and blood flow spectrum. When blood vessel spasm or stenosis occurs, the blood flow velocity increases accordingly. When the blood supply is insufficient, it will show a slower blood flow rate.