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Abstract #2509

Initial experience with artefact reduction sequences and MR conditional cochlear implants

Jonathan Paul Ashmore 1 , Mathias Nittka 2 , Lyndall Blakeway 3 , Steve Connor 1,3 , and Geoff Charles-Edwards 3

1 Neuroradiology, Kings College Hospital NHS Foundation Trust, London, London, United Kingdom, 2 Siemens Healthcare, Erlangen, Germany, 3 Guys & St Thomas NHS Foundation Trust, London, United Kingdom

A growing number of MR conditional cochlear implants can now be scanned safely without requiring temporary surgical removal of the internal magnet. However, with the magnet in situ the resultant images have large areas of signal drop-out and distortion around the device which may obscure nearby structures of interest, even with spin echo sequences and large receiver bandwidths. The aim of this work was to evaluate two new options available on a clinical MRI scanner for reducing metal artefacts, View Angle Tilting (VAT) and Slice Encoding for Metal Artifact Correction (SEMAC)

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