Kocaoglu M.Bulakbasi N.Ucoz T.Ustunsoz B.Pabuscu Y.Tayfun C.Somuncu I.2024-07-222024-07-22200300283940http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/20098We compared contrast-enhanced T1-weighted and 3D constructive interference in steady state (CISS) sequences for demonstrating possible prognostic factors in hearing-preservation surgery for vestibular schwannoma. We studied 22 patients with vestibular schwannomas having hearing-preservation surgery. Postoperatively six (27%) had a facial palsy and eight (36%) had hearing loss. There was a significant correlation between the size of the tumour and facial palsy (r=-0.72). Both techniques adequately demonstrated all tumours. Involvement of the fundus of the internal auditory canal (IAC) and a small distance between the lateral border of the tumour and the fundus were correlated significantly with hearing loss (r=-0.81 and -0.75, respectively). The 3D-CISS sequence, by virtue of its high contrast resolution was superior to T1-weighted images (P < 0.05) for detection of the fundal involvement. The direction of displacement of the facial nerve did not correlate with facial palsy or hearing loss. We think that 3D-CISS images better show the features influencing surgical outcome, but that contrast-enhanced T1-weighted images are required for diagnosis.EnglishAdultContrast MediaEar, InnerFacial NerveFacial Nerve InjuriesFemaleGadolinium DTPAHearing DisordersHumansImaging, Three-DimensionalMagnetic Resonance ImagingMaleMiddle AgedNeoplasm InvasivenessNeuroma, AcousticOtologic Surgical ProceduresPostoperative ComplicationsPostoperative PeriodPredictive Value of TestsProspective StudiesWeights and Measuresgadodiamideadultarticleclinical articlecontrast enhancementcontrolled studycorrelation analysisfacial nervefacial nerve paralysisfemalehearinghearing losshumanimage qualityintermethod comparisoninternal auditory canalmaleneurilemomapostoperative periodpriority journalprognosissteady statesurgical techniquethree dimensional imagingtreatment outcometumor volumevestibular nerveArticle10.1007/s00234-003-1006-0