MRI is a very important examination in clinical practice, especially for neurologists to understand the patient’s condition. For example, in a cranial MRI film, first look at whether the film is in the T1 phase, or T2 phase, or DWI phase, or FLAIR phase. Separate these out, for example, for common cerebrovascular disease, if it is white on the DWI phase, which is diffusion-weighted imaging, it means the patient has a new infarct. If you want to look at the brain structure, focus on the T1 phase. the T2 phase will look at the lesion more clearly, but will not distinguish between a new infarct and an old one. In case of bleeding, CT is recommended to be clearer than MRI. The film can look at the general abnormalities, but the small details should be left to the clinician.