AJR
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Remy-Jardin, M.
Right arrow Articles by Remy, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Remy-Jardin, M.
Right arrow Articles by Remy, J.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?

MDCT of Right Ventricular Function: Impact of Methodologic Approach in Estimation of Right Ventricular Ejection Fraction, Part 2

Martine Remy-Jardin1, Damien Delhaye1, Antoine Teisseire1, Claude Hossein-Foucher2, Alain Duhamel3 and Jacques Remy1

1 Department of Thoracic Imaging, Hospital Calmette, University Center of Lille, Blvd. Jules Leclerq, Lille 59037, France.
2 Department of Nuclear Medicine, Hospital Roger Salengro, Lille 59037, France.
3 Department of Medical Statistics, University of Lille, Lille 59037, France.


Figure 1
View larger version (20K):

[in a new window]
  		Fig. 1 —Flowchart shows methodologic approach followed by each reviewer to evaluate interobserver variability in assessment of right ventricular ejection fraction (RVEF) with MDCT. First step was to investigate influence of operator technique on determination of reconstruction window for diastolic and systolic phases, assessed by comparing concordant and discordant selections between reviewer 1 and reviewer 2 in step 1, reconstruction window. Interobserver variability in manual segmentation process was evaluated by comparing end-systolic (ESV) and end-diastolic (EDV) right ventricular volumes obtained by each reviewer after concordant selections of reconstruction windows by both reviewers (step 2, segmentation process).The variability of RVEF measurements with CT was investigated by comparing each reviewer's measurement on MDCT with that obtained on equilibrium radionuclide ventriculography (step 3, MDCT vs scintigraphy). Agreements between two reviewers and between MDCT and scintigraphy were assessed by means of intraclass correlation coefficient. Agreement was also assessed by Bland-Altman method and by mean absolute percent error.

 

Figure 2
View larger version (9K):

[in a new window]
  		Fig. 2 —Bland-Altman plot of mean difference of right ventricular ejection fractions between two reviewers. Broken line represents mean difference. Solid lines represent the 95% confidence intervals for mean difference.

 

Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?



HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2006 by the American Roentgen Ray Society.