| Automated segmentation of the aorta from phase contrast MR images: validation against expert tracing in healthy volunteers and in patients with a dilated aorta. | |
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MedLine Citation:
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PMID: 20373432 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To assess if segmentation of the aorta can be accurately achieved using the modulus image of phase contrast (PC) magnetic resonance (MR) acquisitions. MATERIALS AND METHODS: PC image sequences containing both the ascending and descending aorta of 52 subjects were acquired using three different MR scanners. An automated segmentation technique, based on a 2D+t deformable surface that takes into account the features of PC aortic images, such as flow-related effects, was developed. The study was designed to: 1) assess the variability of our approach and its robustness to the type of MR scanner, and 2) determine its sensitivity to aortic dilation and its accuracy against an expert manual tracing. RESULTS: Interobserver variability in the lumen area was 0.59 +/- 0.92% for the automated approach versus 10.09 +/- 8.29% for manual segmentation. The mean Dice overlap measure was 0.945 +/- 0.014. The method was robust to the aortic size and highly correlated (r = 0.99) with the manual tracing in terms of aortic area and diameter. CONCLUSION: A fast and robust automated segmentation of the aortic lumen was developed and successfully tested on images provided by various MR scanners and acquired on healthy volunteers as well as on patients with a dilated aorta. |
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Authors:
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Alain Herment; Nadjia Kachenoura; Muriel Lefort; Mourad Bensalah; Anas Dogui; Frédérique Frouin; Elie Mousseaux; Alain De Cesare |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: 31 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-04-07 Completed Date: 2010-10-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 881-8 Citation Subset: IM |
Copyright Information:
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(c) 2010 Wiley-Liss, Inc. |
Affiliation:
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Inserm U678, Paris, France. Alain.Herment@imed.jussieu.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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pathology*,
physiopathology Aorta, Thoracic / pathology Aortic Diseases / diagnosis*, pathology* Automation Case-Control Studies Humans Magnetic Resonance Imaging / instrumentation, methods* Models, Statistical Observer Variation Pattern Recognition, Automated Regression Analysis Reproducibility of Results |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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