title: Evaluation of the cardiac chambers on axial CT: comparison with echocardiography.
abstract: OBJECTIVE
  To evaluate qualitative and simple quantitative measures of all 4 cardiac chamber sizes on computed tomography (CT) in comparison with transthoracic echocardiography (TTE).
  
  
  METHODS
  We retrospectively identified 104 adults with electrocardiographically gated cardiac CT and TTE within 3 months. Axial early diastolic (75% R-R) CT images were reviewed for qualitative chamber enlargement, and each chamber was measured linearly. Transthoracic echocardiography was reviewed for linear, area, and volume measurements. Interrater agreement was calculated using Cohen κ and Pearson correlation.
  
  
  RESULTS
  There were significant correlations between linear left atrium and left ventricle sizes by CT and TTE (r = 0.686 and r = 0.709, respectively). Correlations for right atrium and right ventricle measurements were lower (r = 0.447 and r = 0.492, respectively). Agreement between CT and TTE for qualitative chamber enlargement was poor (highest κ = 0.35). Computed tomography sensitivity was ≤ 62% for enlargement of all chambers.
  
  
  CONCLUSIONS
  Linear CT measurements of left-sided chamber sizes correlate well with TTE. Right heart measurements and qualitative assessments agreed poorly with TTE.
authors.affiliation: From the *Departments of Radiology, †Medicine, Division of Cardiology, ‡Medicine, and §Family and Social Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY.
authors.forename: Rohit
authors.initials: R
authors.lastname: Ramanathan
authors.forename: Anil K
authors.initials: AK
authors.lastname: Anumandla
authors.forename: Linda B
authors.initials: LB
authors.lastname: Haramati
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Spevack
authors.forename: Alla
authors.initials: A
authors.lastname: Godelman
authors.forename: Vineet R
authors.initials: VR
authors.lastname: Jain
authors.forename: Jacob
authors.initials: J
authors.lastname: Kazam
authors.forename: William B
authors.initials: WB
authors.lastname: Burton
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Levsky
mesh_terms: D055424:Cardiac-Gated Imaging Techniques; D003287:Contrast Media; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006325:Heart Atria / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006352:Heart Ventricles / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014283:Triiodobenzoic Acids
chemical_list: D003287:Contrast Media; D014283:Triiodobenzoic Acids; C044834:iodixanol