For patients with cerebral infarction, in addition to collecting medical history and clarifying symptoms and signs, imaging examinations are also very important for the diagnosis and differential diagnosis of cerebral infarction. They are indispensable tools in clinical examinations. Cerebral infarction primarily requires cranial CT and MRI scans. On cranial CT, cerebral infarction lesions mainly appear as low-density areas and are easily distinguishable from cerebral hemorrhage. The lesions may cause swelling and have a certain mass effect. In cranial MRI, the appearance of cerebral infarction is primarily seen in diffusion-weighted imaging as a distinctly high signal, making it very easy to identify the responsible lesions. In T2-weighted images, the high signal is also clearly visible and easier to differentiate.