MRI of the brain is more accurate. MRI mainly examines the brain tissue for brain hemorrhage, brain infarction, brain atherosclerosis, lack of blood supply to the brain, and brain atrophy. When MRI is done, a vascular examination can show whether there is narrowing or occlusion of blood vessels. If you have frequent headaches, it is very necessary to do this examination. Cerebral atherosclerosis refers to the decrease of blood vessel elasticity, which is mainly directly related to the patient’s age, and the usual blood pressure and blood lipids can affect the patient’s blood vessel elasticity. Brain MRI can clarify the foci of infarction in the examination of the acute stage of cerebral infarction, which is significantly helpful for treatment.