Meningioma image performance is as follows: 1. CT features: it appears as round or oval masses, some of them are irregular in shape, and the morphology may change in different parts. Meningioma injected with intensifier generally shows uniform reinforcement, i.e., the whole piece is uniformly white, the degree of reinforcement is related to the blood supply of the tumor, the stronger the degree of reinforcement means more blood supply, generally meningioma will be reinforced, rarely not; 2. It is more typical when the lesion is located in the pontocerebellar angle, the convex side of the brain, the base of the anterior skull, and both sides of the sagittal sinus of the median line; 3.