| Optimized intravenous Flat Detector CT for non-invasive visualization of intracranial stents: first results. | |
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MedLine Citation:
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PMID: 20711730 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: As stents for treating intracranial atherosclerotic stenosis may develop in-stent re-stenosis (ISR) in up to 30%, follow-up imaging is mandatory. Residual stenosis (RS) is not rare. We evaluated an optimised Flat Detector CT protocol with intravenous contrast material application (i.v. FD-CTA) for non-invasive follow-up. METHODS: In 12 patients with intracranial stents, follow-up imaging was performed using i.v. FD-CTA. MPR, subtracted MIP and VRT reconstructions were used to correlate to intra-arterial angiography (DSA). Two neuroradiologists evaluated the images in anonymous consensus reading and calculated the ISR or RS. Correlation coefficients and a Wilcoxon test were used for statistical analysis. RESULTS: In 4 patients, no stenosis was detected. In 6 patients RS and in two cases ISR by intima hyperplasia perfectly visible on MPR reconstructions of i.v. FD-CTA were detected. Wilcoxon's test showed no significant differences between the methods (p > 0.05). We found a high correlation with coefficients of the pairs DSA/ FD-CT MIP r = 0.91, DSA/ FD-CT MPR r = 0.82 and FD-CT MIP/ FD-CT MPR r = 0.8. CONCLUSION: Intravenous FD-CTA could clearly visualise the stent and the lumen, allowing ISR or RS to be recognised. FD-CTA provides a non-invasive depiction of intracranial stents and might replace DSA for non-invasive follow-up imaging. |
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Authors:
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Tobias Struffert; Stephan Kloska; Tobias Engelhorn; Yu Deuerling-Zheng; Sabine Ott; Marc Doelken; Marc Saake; Martin Köhrmann; Arnd Doerfler |
Publication Detail:
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Type: Journal Article Date: 2010-08-14 |
Journal Detail:
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Title: European radiology Volume: 21 ISSN: 1432-1084 ISO Abbreviation: Eur Radiol Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-02-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9114774 Medline TA: Eur Radiol Country: Germany |
Other Details:
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Languages: eng Pagination: 411-8 Citation Subset: IM |
Affiliation:
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Department of Neuroradiology, University of Erlangen-Nuremberg, Schwabachanlage 6, 91054, Erlangen, Germany, tobias.struffert@uk-erlangen.de. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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