| Maximum Diameter Measurements of Aortic Aneurysms on Axial CT Images After Endovascular Aneurysm Repair: Sufficient for Follow-up? | |
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MedLine Citation:
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PMID: 20945067 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: To assess the accuracy of maximum diameter measurements of aortic aneurysms after endovascular aneurysm repair (EVAR) on axial computed tomographic (CT) images in comparison to maximum diameter measurements perpendicular to the intravascular centerline for follow-up by using three-dimensional (3D) volume measurements as the reference standard. MATERIALS AND METHODS: Forty-nine consecutive patients (73 ± 7.5 years, range 51-88 years), who underwent EVAR of an infrarenal aortic aneurysm were retrospectively included. Two blinded readers twice independently measured the maximum aneurysm diameter on axial CT images performed at discharge, and at 1 and 2 years after intervention. The maximum diameter perpendicular to the centerline was automatically measured. Volumes of the aortic aneurysms were calculated by dedicated semiautomated 3D segmentation software (3surgery, 3mensio, the Netherlands). Changes in diameter of 0.5 cm and in volume of 10% were considered clinically significant. Intra- and interobserver agreements were calculated by intraclass correlations (ICC) in a random effects analysis of variance. The two unidimensional measurement methods were correlated to the reference standard. RESULTS: Intra- and interobserver agreements for maximum aneurysm diameter measurements were excellent (ICC = 0.98 and ICC = 0.96, respectively). There was an excellent correlation between maximum aneurysm diameters measured on axial CT images and 3D volume measurements (r = 0.93, P < 0.001) as well as between maximum diameter measurements perpendicular to the centerline and 3D volume measurements (r = 0.93, P < 0.001). CONCLUSION: Measurements of maximum aneurysm diameters on axial CT images are an accurate, reliable, and robust method for follow-up after EVAR and can be used in daily routine. |
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Authors:
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Stephan Baumueller; Thi Dan Linh Nguyen; Robert Paul Goetti; Mario Lachat; Burkhardt Seifert; Thomas Pfammatter; Thomas Frauenfelder |
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Publication Detail:
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Type: Journal Article Date: 2010-10-14 |
Journal Detail:
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Title: Cardiovascular and interventional radiology Volume: 34 ISSN: 1432-086X ISO Abbreviation: Cardiovasc Intervent Radiol Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003538 Medline TA: Cardiovasc Intervent Radiol Country: United States |
Other Details:
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Languages: eng Pagination: 1182-9 Citation Subset: IM |
Affiliation:
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Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Raemistrasse 100, 8091, Zurich, Switzerland, Stephan.Baumueller@usz.ch. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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