Febrile seizure (FS) has become a common problem in childhood and imposes acute effects on the brain. Currently dilated Virchow -Robin spaces (dVRs) has become hot point in research for the explanation the mechanism how its involving brain in inflammatory lesions. we conducted a quantitative method to assessment dVRs that visible onT2WI in simple FS. Our study aim is to describe an effective uses of automatic software method to recognize VRs and to get intergroup differences. Our result suggests that dVRs count, volume and head circumference are greater simple FS than in the control group.