Patients who want to check brain CT should register for neurology, such as neurology and neurosurgery. Because the examination content of brain CT belongs to neurological diseases, such as doing head CT and MRI, there are some differences in the examination, but patients who have head injury due to some sudden situations, such as cranial trauma and fall, are preferred to have head CT examination. If the patient is considering the problem of acute cerebral infarction, routinely, CT of the head is used first for scanning to exclude cerebral hemorrhage. If you want to clarify the specific site of infarction and the size of the infarct area in a short time, you need to perform a head MRI, which has a little more obvious advantage in the diagnosis of ischemic cerebrovascular diseases, and at the same time, MRI has no radiation.