MRI diagnosis of intracranial hypotension syndrome

Objective:To analyze the MRI findings of intracranial hypotension syndrome and get a deeper understanding of the disease.Methods:Imaging findings of 10 cases with IHS were retrospectively analyzed.Among the 10 cases,brain plain CT scanning,pre-and post-contrast brain MRI and post-contrast spinal MRI were performed in 2 cases,only pre-contrast brain MRI were performed in 4 cases,pre-and post-contrast brain MRI were performed in 4 cases.Results:On brain plain CT scanning,small cerebral ventricles were found in 2 cases.On MRI dural thickenings were observed in 10 cases,small cerebral ventricle and downward displacement of the brain in 4 cases,enlargment of pituitary in 4 cases and subdural fluid collection in 5 cases.Postcontrast MRI demonstrated dural thickening and homogeneous enhancement in 6 cases and spinal meningeal enhancement in 1 case.Conclusion:Intracranial hypotension syndrome shows characteristic MRI findings,which in combination with the change of cerebrospinal fluid pressure,suggests the diagnosis.