The Choice of Therapeutic Methods and MRI Diagnosis of Acoustic Neuroma

Objective To evaluate the choice of therapeutic methods and MRI diagnosis of acoustic neuroma.Methods The MRIimaging and clinical materials of 60 patients with acoustic neuroma were analyzed,48 cases were underwent an operation,12 cases weretreated conservatively or gamma knife treatment,follow-up ranged from 1 to 4 years.Results There were 62 tumors round the internalauditory canal.There were 58 cases with single acoustic neuroma and two cases with couples acoustic neuroma.28 tumors demonstratedhypointense and 30 tumors demonstrated hypo-and isointense signals on T_1 weighted image.38 tumors demonstrated hyperintense and 24tumors demonstrated hyper-and isointense signals on T_2 weighted image.The Ⅶ,Ⅷ nerves affected side were thickened than that ofopposite side in 32 patients.After Gd-DTPA administration 24 tumors were homogeneously enhanced,26 tumors were inhomogeneously or circularly enhanced in 50 acoustic neuromas of 48 cases.Operation was still the main election for acoustic neuroma.Conclusion MRI is an effective method in the diagnosis of acoustic neuroma,and providing advice for clinics in making therapeutic programs.