Patients with cerebral atrophy display clear signs on cranial Magnetic Resonance Imaging (MRI). The manifestations on MRI primarily include notably widened cerebral sulci, obvious atrophy of the cerebral lobes, and enlarged ventricles, which are typical presentations of cerebral atrophy. Cerebral atrophy can be categorized into atrophy of the cerebrum, cerebellum, and brainstem, each showing different characteristics on MRI, which requires careful differentiation. There are many causes of cerebral atrophy, such as degenerative diseases like Alzheimer's disease, which leads to cerebral atrophy. Cerebral thrombosis and poor cerebral vascular conditions can also cause cerebral atrophy due to insufficient blood supply to the brain. Additionally, drug toxicity and chronic alcoholism can lead to cerebral atrophy, which also needs to be differentiated carefully.