Brain CT is able to detect brain problems such as stroke, traumatic brain injury, brain inflammation, tumor, brain atrophy, degenerative brain lesions, brain parasitic diseases, etc. Brain CT is a method of examining the cranium and brain through X-rays, including plain CT, enhanced CT, and contrast CT.Brain CT is suitable for evaluating and diagnosing brain diseases, and is convenient, fast, and relatively simple in its requirements. Brain CT examination is also suitable for skull fractures, especially depressed fractures and skull base fractures, and has greater advantages for lesions due to head trauma. It is recommended that patients with recurrent headaches, vomiting, hemiplegia, and unfavorable speech undergo CT brain examination as early as possible for clear diagnosis and timely treatment.