MRI analysis of abnormal dural enhancement due to non-meningioma diseases

Objective To analysis MRI manifestations of abnormal dural enhancement due to non-meningioma diseases,and to evaluate MRI diagnostic value of dural disease.Methods Enhancement features in 32 cases with abnormal dural enhancement on MRI were retrospectively analysed.There were 22 patients with dural metastasis,abcess of brain in 4 cases,intracranial hypotention syndrome in 4 cases,fungus infection of paranasal sinus in 1 case,eosinophilic granuloma in 1 case.Thirty-two patients were examined by plain and contrast MRI.Results On MRI plain scan,Abnormal dural changes were found in 5 cases and showed linear thickening,including homogenous thicking of all dural in 4 cases and non-homogenous thicking of right frontal dural in 1 case,after MRI enhanced examination,all cases were showed linear thicking and enhancement,15 cases were showed homogenous thicking and enhancement,17 cases were showed non-homogenous thicking and enhanced like dural tail.Conclusions Post-contrast MRI scan is an important tool for dural disease,and is superior to MRI plain scan. Key words: Dural disease; Abnormal enhancement; Magnetic resonance imaging