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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