Cochlear fossa enhancement at MR evaluation of vestibular schwannoma: Correlation with success at hearing-perservation surgery

被引：24

作者：

Dubrulle, F

Ernst, O

Vincent, C

Vaneecloo, FM

Lejeune, JP

Lemaitre, L

机构：

[1] CHU Lille, Hop Huriez Sud, Dept Radiol, F-59037 Lille, France

[2] CHU Lille, Hop Roger Salengro, Dept Otoneurol, F-59037 Lille, France

[3] CHU Lille, Hop Roger Salengro, Dept Neurosurg, F-59037 Lille, France

来源：

RADIOLOGY | 2000年 / 215卷 / 02期

关键词：

ear; MR; neoplasms; hearing loss; magnetic resonance (MR); contrast enhancement; high-resolution; nerves; cranial; schwannoma;

D O I：

10.1148/radiology.215.2.r00ma20458

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 [临床医学]; 100207 [影像医学与核医学]; 1009 [特种医学];

摘要：

PURPOSE: To describe a sign in magnetic resonance (MR) imaging that could reflect the state of the cochlear nerve before hearing-preservation surgery in small vestibular schwannomas. MATERIALS AND METHODS: Thirty-one patients with serviceable hearing underwent 1.5-T MR imaging before hearing-preservation surgery. The presence of cochlear fossa enhancement on T1-weighted spin-echo images obtained after the administration of contrast material was compared with the results of hearing-preservation surgery. RESULTS: Cochlear fossa enhancement was present in 13 patients, and all of them had total hearing loss after surgery. There was no cochlear fossa enhancement in 18 patients; 15 maintained serviceable hearing after surgery, and three had postoperative hearing loss with no serviceable hearing (sensitivity, 81%; specificity, 100%). CONCLUSION: Cochlear fossa enhancement on T1-weighted spin-echo images seems to be a reliable sign for analyzing the state of the cochlear nerve. The absence of cochlear fossa enhancement could become an additional criterion for selecting the surgical approach in vestibular schwannomas.

引用

页码：458 / 462

页数：5

共 18 条

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HEARING PRESERVATION IN ACOUSTIC NEUROMA SURGERY - A CONTINUING STUDY [J].