Postoperative Spinal Imaging Metal Artefact Reduction Using Ultrashort Echo Time MRI: A Feasibility Study
Amy Ming-Chun Tsai Sevao1, Alistair Young1, Benjamin Schmitt2, Hament Pandya3, Karen Billington3, Anthony Doyle3, David Grodzki4, and Brett Cowan5
1Anatomy with Medical Imaging, University of Auckland, Auckland, New Zealand, 2Sydney, Australia, 3Auckland, New Zealand, 4Erlangen, Germany, 5University of Auckland, Auckland, New Zealand
Post-operative spine imaging with metal implants in situ are problematic because of the significant metal artefacts, in both CT due to beam hardening, and MRI fom signal loss. Ultrashort Echo Time (UTE) MRI has potential to significantly reduce metal artefacts because of its method of acquisition. Significant differences in metal artefacts between conventional MR and UTE are found in our study, imaging sheep spine with spinal fusion hardware in situ, with importnat clinical implications.
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