The 29-year-old Wang (a pseudonym) is a white-collar worker, engaged in software development, usually stay up late on the Internet, recently often feel dizzy headache, thought it was caused by too much strain, and has not cared. A week ago, he suddenly found himself numb on the left side of his body, the left hand can not make the strength, the left foot can only dragging, which rushed to the hospital, after careful questioning and examination, confirmed its diagnosis of stroke. ”Nowadays, many people do not think about dizziness and headache, and do not associate it with stroke, which is related to the lack of awareness of early screening and early prevention of stroke.” Early screening and early prevention” refers to the prevention of risk factors that lead to stroke. At this stage, the disease does not occur, but certain risk factors are already present, increasing the risk of stroke, and early brain screening can keep stroke (stroke) from occurring or delay it. This is like repairing the fence first versus mending the sheep, the former being more meaningful to the patient than the latter. There are many factors that can cause dizziness and headache, the most common being lack of sleep, stress, anxiety, neurological disorders, and other functional disorders. Therefore, people who have had a stroke or transient ischemic attack (TIA), or who are over 40 years old with hypertension, diabetes, dyslipidemia, unhealthy lifestyles such as smoking and little exercise, as well as those who are obese and have a family history of hypertension, should be screened for cerebrovascular disease once a year. Preventive brain screening is performed to provide a comprehensive assessment of the blood vessels in the brain.