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Neuroradiology
Published in: Neuroradiology 7/2003

01-07-2003 | Head and Neck Radiology

Comparison of contrast-enhanced T1-weighted and 3D constructive interference in steady state images for predicting outcome after hearing-preservation surgery for vestibular schwannoma

Authors: M. Kocaoglu, N. Bulakbasi, T. Ucoz, B. Ustunsoz, Y. Pabuscu, C. Tayfun, I. Somuncu

Published in: Neuroradiology | Issue 7/2003

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Abstract

We 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.
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Metadata
Title
Comparison of contrast-enhanced T1-weighted and 3D constructive interference in steady state images for predicting outcome after hearing-preservation surgery for vestibular schwannoma
Authors
M. Kocaoglu
N. Bulakbasi
T. Ucoz
B. Ustunsoz
Y. Pabuscu
C. Tayfun
I. Somuncu
Publication date
01-07-2003
Publisher
Springer-Verlag
Published in
Neuroradiology / Issue 7/2003
Print ISSN: 0028-3940
Electronic ISSN: 1432-1920
DOI
https://doi.org/10.1007/s00234-003-1006-0

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