| Angiographic CT after intravenous contrast agent application: A noninvasive follow-up tool after intracranial angioplasty and stenting. | |
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MedLine Citation:
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PMID: 20634309 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND AND PURPOSE: ICAS is one of the therapeutic options in symptomatic cerebral artery stenosis. iaDSA is the current criterion standard examination after ICAS for the detection of ISR. In this study, we evaluated ivACT as a potential noninvasive follow-up alternative. MATERIALS AND METHODS: In 17 cases, ivACT and iaDSA were performed after ICAS. Both procedures were carried out on a flat-panel-detector-equipped angiography system. Postprocessing of ivACT acquisitions was performed on a dedicated workstation producing multiplanar reformations of the stent region and other intracranial arteries. Restenotic lesions were compared with iaDSA measurements. All studies were independently evaluated by 2 experienced neuroradiologists blinded to patients data. RESULTS: In 5 cases, ISR was diagnosed on iaDSA images. All restenotic lesions were reliably detected (sensitivity, 100%; 95%CI, 48%-100%) and could be correctly quantified on ivACT images in comparison with iaDSA. The neuroradiologists correctly excluded ISR in 11 of 12 lesions after viewing the ivACT examinations (specificity, 92%; 95%CI, 62%-100%). Measurements of ISR on ivACT were highly correlated to iaDSA (Pearson r = 0.94, P < .01). CONCLUSIONS: IvACT is a promising noninvasive follow-up examination after ICAS. With its high spatial resolution, it can reliably detect or exclude ISR. Contrary to iaDSA, there is no need for a recovery period after ivACT and the risk of neurologic complications is practically lowered to zero. |
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Authors:
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M-N Psychogios; P Schramm; J-H Buhk; A Xyda; K Gröschel; K Jung; M Knauth |
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Publication Detail:
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Type: Journal Article Date: 2010-07-15 |
Journal Detail:
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Title: AJNR. American journal of neuroradiology Volume: 31 ISSN: 1936-959X ISO Abbreviation: AJNR Am J Neuroradiol Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003708 Medline TA: AJNR Am J Neuroradiol Country: United States |
Other Details:
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Languages: eng Pagination: 1886-91 Citation Subset: IM |
Affiliation:
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Department of Neuroradiology, University Medicine Goettingen, Germany. m.psychogios@med.uni-goettingen.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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