Imaging Evaluation for Cochlear Implantation

Wagner, J.S.; Sakala, M.D.; Chen, M.Y.; Kirse, D.J.; Williams, D.W.; Zapadka, M.E.

View Article on Neurographics Website

Date of Activity Release: Sept. 1, 2016
Date of Activity Expiration: Sept. 1, 2019

Target Audience:
Intended for neuroradiologists and neuroradiology trainees with varying degrees of experience.

Learning Objectives:
Explain the function of a cochlear implant device, identify anatomy relevant to cochlear implantation, review causes of hearing loss that could impact surgical planning, and recognize findings that could potentially lead to operative complications, if unrecognized.

Sensorineural hearing loss affects children and adults of all ages, and technologic advances in hearing devices have contributed to an increasing number of cochlear implant recipients in the past decade. Cross-sectional imaging with CT and MR imaging plays an integral role in the evaluation of these cochlear implant candidates, and, with the increasing number of candidates and recipients, there has been a commensurate increase in both imaging capabilities and the absolute number of studies performed with a presurgical indication. This review provided a stepwise approach to evaluating CT and MR imaging examinations of potential candidates for cochlear implant, described normal temporal bone anatomy and variants, and illustrated pathologies and vascular anomalies most relevant to the referring otolaryngologist.

Commercial Support
No commercial support was received for this activity.

Credit Designation Statement

The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit(s)TM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Method of Physician Participation:
Each participant will review the corresponding Neurographics article located at Upon completion, each physician will complete and pass a post-test with a score of at least 80% to receive a CME certificate.

All individuals in control of content have disclosed the following relevant financial relationships. All of these relationships were treated as a conflict of interest, and have been resolved (C7 SCS 6.1-6.2, 6.5)

Authors have no relevant financial relationships.





Barton Branstetter 

Editor in Chief

None, N/A

Adam Flanders

Deputy Editor

Royalties, Lippincott Williams and Wilkins

Robert Quencer 

Consulting Editor

None, N/A

Mark Mullins

Associate Editor

Non-remunerative position, AUR6

Meng Law

Associate Editor

Stockholder, Clinical Imaging

Michele Johnson

Associate Editor

Consultant, Boston Scientific, Inc.

Edward Escott

Associate Editor

Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers

Scott Faro

Associate Editor

None, N/A

Tina Young Poussaint

Associate Editor

None, N/A

Dheeraj Ghandi

Associate Editor

Grant, Arstasis, Axera Inc.; Consultant, Covidien, EV3

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