| Assessment of right ventricle volumes and function by cardiac MRI: Quantification of the regional and global interobserver variability. | |
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MedLine Citation:
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PMID: 22135141 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Reproducibility of the manual assessment of right ventricle volumes by short-axis cine-MRI remains low and is often attributed to the difficulty in separating the right atrium from the ventricle. This study was designed to evaluate the regional interobserver variability of the right ventricle volume assessment to identify segmentation zones with the highest interobserver variability. Short-axis views of 90 right ventricles (30 hypertrophic, 30 dilated, and 30 normal) were acquired with 2D steady-state free precession sequences at 1.5 T and were manually segmented by two observers. The two segmentations were compared and the variations were quantified with a variation score based on the Hausdorff distance between the two segmentations and the interobserver 95% limits of concordance of the global volumes. The right ventricles were semiautomatically split into four subregions: apex, mid-ventricle, tricuspid zone, and infundibulum. These four subregions represented 11%, 34%, 36%, and 19% of the volume but, respectively, yielded variation scores of 8%, 16%, 42%, and 34%. The infundibulum yielded the highest interobserver regional variability although its variation score remained comparable to the tricuspid zone due to its lower volume. These results emphasize the importance of standardizing the segmentation of the infundibulum and the tricuspid zone to improve reproducibility. Magn Reson Med, 2011. © 2011 Wiley-Liss, Inc. |
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Authors:
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Laurent Bonnemains; Damien Mandry; Pierre-Yves Marie; Emilien Micard; Bailiang Chen; Pierre-André Vuissoz |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-29 |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: - ISSN: 1522-2594 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-12-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Wiley-Liss, Inc. |
Affiliation:
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Cardiologie Infantile, CHU Nancy, Nancy, France; IADI, Nancy-Université, Nancy, France; U947, INSERM, Nancy, France. l.bonnemains@chu-nancy.fr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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