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Follow-up of abdominal aortic aneurysm after endovascular aortic repair: Comparison of volumetric and diametric measurement.
MedLine Citation:
PMID:  21493027     Owner:  NLM     Status:  Publisher    
PURPOSE: To determine the correlation of maximal diameter measurements with volumetric evaluation of size after endovascular aortic repair (EVAR) of abdominal aortic aneurysms (AAA) using computed tomography angiography (CTA) and to survey its applicability for clinical follow-up. MATERIALS AND METHODS: 73 consecutive patients (2 females, 71 males; age 38-84 years; mean age, 69.1±8 years) with AAA were treated with percutaneous EVAR in a single institution. For follow-up, CTA was performed periodically after EVAR. Images were evaluated for maximal diameter in consensus by two experienced radiologists. Using OsirixTM, volumetric measurements were done by one radiologist, including the entire infrarenal abdominal aorta. RESULTS: In 73 patients 220 CTA examinations were performed after EVAR with a mean follow-up of 17.3 months (range, 1.8-42.7 months). The mean postinterventional volume of aneurysm was 165.63ml±93.29ml (range, 47.94-565.67ml). The mean maximal postinterventional diameter was 5.91±1.52cm (range, 3.72-13.82cm). At large over the entire observation period a slight, non-significant decrease of 1.6% (2.58ml±69.05ml, range 82.82-201.92ml) in volumes and a 9.3% (mean 0.55cm±1.22cm, range 2.85-1.93cm) in diameters were observed. For all examinations a high correlation of volume and diameter was calculated (r=0.813-0.905; α<0.01). CONCLUSION: For follow-up of abdominal EVAR using CTA there is a high correlation between volumetric and diametric measurements of aneurysm. Based on a daily clinical routine setting, measurements of maximal diameters in cross sectional imaging of AAA after EVAR seems to be sufficient to exclude post interventional enlargement.
J D Hahne; C Arndt; J Herrmann; B Schönnagel; G Adam; C R Habermann
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-12
Journal Detail:
Title:  European journal of radiology     Volume:  -     ISSN:  1872-7727     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8106411     Medline TA:  Eur J Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ireland Ltd.
University Medical Center Hamburg-Eppendorf, Center for Radiology and Endoscopy, Department of Diagnostic and Interventional Radiology, Martinistrasse 52, 20246 Hamburg, Germany.
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