Document Detail

Cardiac MRI Assessment of Right Ventricular Function in Acquired Heart Disease: Factors of Variability.
MedLine Citation:
PMID:  22608861     Owner:  NLM     Status:  Publisher    
RATIONALE AND OBJECTIVES: To evaluate intra- and inter-observer variability of right ventricular (RV) functional parameters as evaluated by cardiac magnetic resonance imaging (MRI) in patients with acquired heart disease (AHD), and to identify factors associated with an increased variability. MATERIALS AND METHODS: Sixty consecutive patients were enrolled. Right and left ventricular (LV) volumes, ejection fraction, and mass were determined from short-axis cine sequences. All analyzes were performed twice by three observers with various training-degree in cardiac MRI. Intra- and inter-observer variability was evaluated. The impact on variability of each of the following parameters was assessed: observer's experience, basal and apical slices selection, end-systolic phase selection, and delineation. RESULTS: Mean segmentation time ranged 9.8-19.0 minutes for RV and 6.4-9.2 minutes for LV. Variability of RV functional parameters measurement was strongly influenced by previous observer's experience: it was two to three times superior to that of LV, even for the most experienced observer. High variability in the measurement of RV mass was observed. For both ventricles, selection of the basal slice and delineation were major determinants of variability. CONCLUSION: As compared to LV, RV function assessment with cardiac MRI in AHD patients is much more variable and time-consuming. Observer's experience, selection of basal slice, and delineation are determinant.
Jérôme Caudron; Jeannette Fares; Valentin Lefebvre; Pierre-Hugues Vivier; Caroline Petitjean; Jean-Nicolas Dacher
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-17
Journal Detail:
Title:  Academic radiology     Volume:  -     ISSN:  1878-4046     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9440159     Medline TA:  Acad Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 AUR. Published by Elsevier Inc. All rights reserved.
Department of Radiology, Rouen University Hospital, 1 rue de Germont, 76031 ROUEN CEDEX, France; INSERM U644, University of Rouen, Rouen, France.
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