| Multidetector CT angiography in the follow-up of patients treated with renal artery stents: value of different reformation techniques compared with axial source images. | |
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MedLine Citation:
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PMID: 17723005 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate the role of 4 different reformation techniques in comparison with axial images from multidetector computed tomographic angiography (MDCTA) in the follow-up of renal artery stents. METHODS: Data on 40 patients (20 men; mean age 65 years) who underwent MDCTA as part of their routine follow-up after successful primary stenting of a main renal artery were retrospectively analyzed. Multiplanar reformation (MPR), curved planar reformation (CPR), volume rendering threshold (VRT), and virtual angioscopy (VA) were reviewed by 2 independent observers who were blinded to the results of the axial source images, which served as the gold standard. The stenosis degree was scored as I = 0%, II <50%, III = 51%-75%, IV = 76%-99%, or V = occlusion; a stenosis >50% was considered hemodynamically significant. RESULTS: Five hemodynamically significant stenoses were identified on axial images. The correlation with axial images was perfect for both observers using MPR and CPR (kappa = 1 for each observer); corresponding results were kappa = 0.69 and kappa = 0.64 for VRT and kappa = 0.88 and kappa = 0.83 for VA, respectively. The interobserver correlations were excellent for all reformation techniques (kappa = 0.95 to 1). CONCLUSION: Compared to axial images, MPR and CPR correlated perfectly with axial images; VA performed surprisingly well, while VRT was affected by artifacts and consequently showed inferior results. |
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Authors:
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Stefan Puchner; Alfred Stadler; Erich Minar; Johannes Lammer; Robert A Bucek |
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Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article |
Journal Detail:
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Title: Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists Volume: 14 ISSN: 1526-6028 ISO Abbreviation: J. Endovasc. Ther. Publication Date: 2007 Jun |
Date Detail:
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Created Date: 2007-08-28 Completed Date: 2007-09-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100896915 Medline TA: J Endovasc Ther Country: United States |
Other Details:
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Languages: eng Pagination: 387-94 Citation Subset: IM |
Affiliation:
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Department of Cardiovascular and Interventional Radiology, Medical University Vienna, Austria. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Angiography / instrumentation Angioplasty, Balloon* Artifacts Female Follow-Up Studies Humans Male Middle Aged Observer Variation Predictive Value of Tests Radiographic Image Interpretation, Computer-Assisted* Renal Artery / radiography* Renal Artery Obstruction / radiography*, therapy Reproducibility of Results Research Design Retrospective Studies Severity of Illness Index Stents* Tomography, X-Ray Computed / instrumentation* Treatment Outcome User-Computer Interface* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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