Both CT and MRI are aids to examine the skull for structural abnormalities; CT is a computerized, flat image that uses radiation to analyze the head for structural abnormalities. MRI is a magnetic field, and the examination area receives the energy released by the field to show the results. The sensitivity, focus, examination time, cost, and radiation level of the two are different. 1. Sensitivity: MRI is more sensitive than CT, and has a three-dimensional structure and higher resolution than CT. For epilepsy and acute cerebral infarction, the data parameters provided by MRI are better than brain CT; 3. While MRI examination time is longer, the results take about half an hour to come out; 4, cost: the price of CT is generally lower than MRI, and most people are more receptive to CT; 5, radiation level: CT is a level scan, with a certain degree of radioactivity, but can be metabolized. MRI is the use of magnetic field, no radiation, almost no harm to the body. Clinically, different examination methods will be chosen for different diseases. CT and MRI have their own advantages, and there is no statement of which is better. The CT and MRI have their own advantages, and there is no saying which one is better. You can choose the appropriate examination mode with the advice of your doctor, taking into account the symptoms and the degree of the disease.