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Evaluation of an optimized metal artifact reduction algorithm for flat-detector angiography compared to DSA imaging in follow-up after neurovascular procedures

dc.contributor.authorAmelung, Nadine
dc.contributor.authorMaus, Volker
dc.contributor.authorBehme, Daniel
dc.contributor.authorPapageorgiou, Ismini E
dc.contributor.authorLeyhe, Johanna R
dc.contributor.authorKnauth, Michael
dc.contributor.authorPsychogios, Marios N
dc.date.accessioned2019-08-18T03:27:24Z
dc.date.available2019-08-18T03:27:24Z
dc.date.issued2019
dc.identifier.urihttp://resolver.sub.uni-goettingen.de/purl?gs-1/16352
dc.description.abstractAbstract Background Flat detector CT – angiography (FDCTA) has become a valuable imaging tool in post- and peri-interventional imaging after neurovascular procedures. Metal artifacts produced by radiopaque implants like clips or coils still impair image quality. Methods FDCTA was performed in periprocedural or follow-up imaging of 21 patients, who had received neurovascular treatment. Raw data was sent to a dedicated workstation and subsequently a metal artifact reduction algorithm (MARA) was applied. Two neuroradiologists examined the images. Results Application of MARA improved image appearance and led to a significant reduction of metal artifacts. After application of MARA only 8 datasets (34% of the images) were rated as having many or extensive artifacts, before MARA 15 (65%) of the images had extensive or many artifacts. Twenty percent more cases of reperfusion were diagnosed after application of MARA, congruent to the results of digital subtraction angiography (DSA) imaging. Also 3 (13% of datasets) images, which could not be evaluated before application of MARA, could be analyzed after metal artifact reduction and reperfusion could be excluded. Conclusion Application of MARA improved image evaluation, reduced the extent of metal artifacts, and more cases of reperfusion could be detected or excluded, congruent to DSA imaging.
dc.description.sponsorshipOpen-Access-Publikationsfonds 2019
dc.language.isoen
dc.publisherBioMed Central
dc.identifier.bibliographicCitationBMC Medical Imaging. 2019 Aug 14;19(1):66
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleEvaluation of an optimized metal artifact reduction algorithm for flat-detector angiography compared to DSA imaging in follow-up after neurovascular procedures
dc.typejournalArticle
dc.identifier.doi10.1186/s12880-019-0352-2
dc.type.versionpublishedVersion
dc.date.updated2019-08-18T03:27:24Z
dc.rights.holderThe Author(s).
dc.bibliographicCitation.volume19
dc.bibliographicCitation.issue1
dc.type.subtypejournalArticle
dc.identifier.pmid31412810
dc.bibliographicCitation.articlenumber66
dc.bibliographicCitation.journalBMC Medical Imaging


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