Neuroradiologische Diagnostik bei Patienten mit sensorineuralem Hörverlust vor Cochlea-Implantation

A. Biller; A. Bartsch; C. Knaus; J. Müller; L. Solymosi; M. Bendszus

doi:10.1055/s-2007-963124

RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, Table of Contents

Rofo 2007; 179(9): 901-913
DOI: 10.1055/s-2007-963124

Übersicht

Neuroradiologische Diagnostik bei Patienten mit sensorineuralem Hörverlust vor Cochlea-Implantation

Neuroradiological Imaging in Patients with Sensorineural Hearing Loss prior to Cochlear ImplantationA. Biller¹ , A. Bartsch¹ , C. Knaus² , J. Müller² , L. Solymosi¹ , M. Bendszus¹

¹Abteilung für Neuroradiologie, Universität Würzburg
²Klinik und Poliklinik für Hals-, Nasen- und Ohrenkranke, Universität Würzburg

Abstract

Zusammenfassung

Die Cochlea-Implantation (CI) ist eine etablierte Technik, um Patienten mit bilateralem schwerem sensorineuralem Hörverlust (SNHV) ein Sprachverständnis zu ermöglichen. Eine präzise präoperative radiologische Diagnostik ist Grundlage für die Entscheidung zur Anlage eines Cochlea-Implantates und die erfolgreiche Durchführung der Implantation. Für die Bildgebung stehen CT, konventionelle und funktionelle MRT zur Verfügung. Dabei ist die Kenntnis der häufigsten kongenitalen syndromalen, nichtsyndromalen und erworbenen Fehlbildungen des Innenohres essenziell. Dieser Artikel bietet eine Übersicht zu den Methoden der Bildgebung vor CI und die wichtigsten Malformationen des Innenohres. Zudem werden Sicherheitsaspekte zur Durchführung einer MR-Bildgebung bei Patienten mit Cochlea-Implantat diskutiert.

Abstract

Cochlear implantation (CI) is an established technique for enabling speech perception in patients suffering from severe bilateral sensorineural hearing loss (SNHL). Thorough preoperative radiological assessment is essential for correctly evaluating the indication for surgery and safely performing cochlear implantation. CT and conventional and functional MRI are available for radiological assessment. Therefore, knowledge of the most frequent congenital syndromal, non-syndromal, and acquired malformations of inner ear structures is fundamental. This article provides information about imaging techniques prior to CI and relevant malformations of the inner ear. Safety aspects for patients with a cochlear implant undergoing MR imaging are also discussed.

Key words

CT - hearing loss - MR imaging - cochlear implant - inner ear malformations - MR safety

Full Text

References

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Dr. Armin Biller

Abteilung für Neuroradiologie, Universität Würzburg

Joseph-Schneider-Str. 11

97080 Wuerzburg

Phone: ++49/9 31/20 13 46 26

Fax: ++49/9 31/20 13 48 03

Email: biller@neuroradiologie.uni-wuerzburg.de