Abstract: Objective To investigate the performance and value of low-field MRI in diagnosis of choroidal fissure cyst in brain.Method We retrospectively analyzed the low-field MRI findings of 13 choroidal fissure cyst in brain,and analyzed their correlation with clinical findings.Results 13 cases were cracked in the choroid,1 case occurred in the bilateral,7 cases occurred in the right side,5 cases occurred in the left side,the performance of the round,oval or spindle and smooth sharp boundary of the cerebrospinal flu...