title: [Comparison of 2D and 3D techniques in the evaluation of global ventricular function on multidetector-row CT].
abstract: OBJECTIVE
  To compare two methods of post processing cardiac CT data to measure global ventricular function. Materials and methods. Retrospective study where three readers measured the end-diastolic volume (EDV), end-systolic volume (ESV) and ejection fraction (EF) of the right (n=22) and left (n=44) ventricles, using a 2D method (extrapolated volumetric method, EVM) and a 3D method (direct volumetric method, DVM) after cardiac CT with retrospective ECG gating. Inter- and intraobserver agreement were calculated based on the intraclass correlation coefficient (ICC) with 95% confidence interval (CI95%), and results obtained with each method were compared using the student t test for paired samples.
  
  
  RESULTS
  Inter- and intraobserver reproducibility were very good for both methods, with ICC ranging between 0.694 and 0.992, without significant difference. For the left ventricle, EDV, ESV and EF were 16653 ml, 8351 ml and 5415% for DVM et de 20361 ml, 11558 ml and 4613% for EVM respectively. Right ventricular values were 15247 ml, 7534 ml, 5013% and 17253 ml, 9940 ml, 439% (p<0,0001).
  
  
  CONCLUSIONS
  The very good inter- and intraobserver reproducibility for both methods validate their use in clinical practice. Volume measurements with DVM are always inferior to volumes with EDM, with inverse relationship for EF measurements.
authors.affiliation: INSERM, ERI13 IADI, 54000 Nancy, France. d.mandry@chu-nancy.fr
authors.forename: D
authors.initials: D
authors.lastname: Mandry
authors.forename: Pa
authors.initials: P
authors.lastname: Ganne
authors.forename: S
authors.initials: S
authors.lastname: Tissier
authors.forename: C
authors.initials: C
authors.lastname: Baumann
authors.forename: V
authors.initials: V
authors.lastname: Laurent
authors.forename: D
authors.initials: D
authors.lastname: Régent
mesh_terms: D006801:Humans; D021621:Imaging, Three-Dimensional; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods; D016276:Ventricular Function