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Abstract #3411

Imaging the Internal Acoustic Meatus (IAMs) of patients with cochlear implants in-situ using Slice Encoded Metal Artefact Reduction. 

Simon Shah1, Fran Padormo 1, Kristine Knott1, Suki Thomson1, Steve Conner1, Geoff Charles-Edwards1, and Phil Touska1
1Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom

Neurofibromatosis type 2 (NF2) patients commonly have bilateral vestibular schwannomas, which typically require regular monitoring with MRI. However these patients also have cochlear implants which makes MRI challenging. We have used Slice Encoded Metal Artefact Correction (SEMAC) to improve the imaging of IAMs in patients with cochlear implants in-situ. The implementation of SEMAC imaging reduced the geometric distortion and the volume of the signal void around the implants by over half.

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