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dc.date.accessioned2017-11-21T10:10:52Z
dc.date.available2017-11-21T10:10:52Z
dc.date.issued2013
dc.identifier.urihttp://hdl.handle.net/10852/59149
dc.description.abstractPurpose Cervical disc prostheses induce significant amount of artifact in magnetic resonance imaging which may complicate radiologic follow-up after surgery. The purpose of this study was to investigate as to what extent the artifact, induced by the frequently used Discover® cervical disc prosthesis, impedes interpretation of the MR images at operated and adjacent levels in 1.5 and 3 Tesla MR. Methods Ten subsequent patients were investigated in both 1.5 and 3 Tesla MR with standard image sequences one year following anterior cervical discectomy with arthroplasty. Outcome measures Two neuroradiologists evaluated the images by consensus. Emphasis was made on signal changes in medulla at all levels and visualization of root canals at operated and adjacent levels. A “blur artifact ratio” was calculated and defined as the height of the artifact on T1 sagittal images related to the operated level. Results The artifacts induced in 1.5 and 3 Tesla MR were of entirely different character and evaluation of the spinal cord at operated level was impossible in both magnets. Artifacts also made the root canals difficult to assess at operated level and more pronounced in the 3 Tesla MR. At the adjacent levels however, the spinal cord and root canals were completely visualized in all patients. The “blur artifact” induced at operated level was also more pronounced in the 3 Tesla MR. Conclusions The artifact induced by the Discover® titanium disc prosthesis in both 1.5 and 3 Tesla MR, makes interpretation of the spinal cord impossible and visualization of the root canals difficult at operated level. Adjusting the MR sequences to produce the least amount of artifact is important. © The Author(s) 2013 Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.en_US
dc.language.isoenen_US
dc.relation.ispartofSundseth, Jarle (2017) The comparison of outcome after arthroplasty or fusion in single level cervical disc disease. Doctoral thesis. http://hdl.handle.net/10852/59150
dc.relation.urihttp://hdl.handle.net/10852/59150
dc.titleMagnetic resonance imaging evaluation after implantation of a titanium cervical disc prosthesis: a comparison of 1.5 and 3 Tesla magnet strengthen_US
dc.typeJournal articleen_US
dc.creator.authorSundseth, Jarle
dc.creator.authorJacobsen, Eva A.
dc.creator.authorKolstad, Frode
dc.creator.authorNygaard, Oystein P.
dc.creator.authorZwart, John A.
dc.creator.authorHol, Per K.
dc.identifier.jtitleEuropean Spine Journal
dc.identifier.volume22
dc.identifier.issue10
dc.identifier.startpage2296
dc.identifier.endpage2302
dc.identifier.doihttps://doi.org/10.1007/s00586-013-2994-z
dc.identifier.urnURN:NBN:no-61838
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/59149/1/10.1007_s00586-013-2994-z.pdf
dc.type.versionPublishedVersion


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