title: Left ventricular ejection fraction and volumes as measured by 3d echocardiography and ultrafast computed tomography.
abstract: BACKGROUND
  Real-time three-dimensional echocardiography (RT-3D-Echo) and ultrafast computed tomography (CT) are two novel methods for the analysis of LV ejection fraction and volumes.
  
  
  OBJECTIVE
  To compare LVEF and volume measurements as obtained using RT-3D-Echo and ultrafast CT.
  
  
  METHODS
  Thirty nine consecutive patients (27 men, mean age of 57+/-12 years) were studied using RT-3D-Echo and 64-slice ultrafast CT. LVEF and LV volumes were analyzed.
  
  
  METHODS
  coefficient of correlation (r: Pearson), Bland-Altman analysis, linear regression analysis, 95% CI, p<0.05.
  
  
  RESULTS
  RT-3D-Echo measurements: LVEF ranged from 56.1 to 78.6 (65.5+/-5.58)%; end-diastolic volume ranged from 49.6 to 178.2 (87+/-27.8) ml; end-systolic volume ranged from 11.4 to 78 (33.1+/-13.6) ml. CT scan measurements: LVEF ranged from 53 to 86% (67.8+/-7.78); end-diastolic volume ranged from 51 to 186 (106.5+/-30.3) ml; end-systolic volume ranged from 7 to 72 (35.5+/-13.4)ml. Correlations between RT-3D-Echo and CT were: LVEF (r: 0.7888, p<0.0001, 95% CI 0.6301 to 0.8843); end-diastolic volume (r: 0.7695, p<0.0001, 95% CI 0.5995 to 0.8730); end-systolic volume (r: 0.8119, p<0.0001, 95% CI 0.6673 to 0.8975).
  
  
  CONCLUSIONS
  Good correlation between LVEF and ventricular volume parameters as measured by RT-3D-Echo and 64-slice ultrafast CT was found in the present case series.
authors: Hospital Israelita Albert Einstein, São Paulo, SP, Brazil. mluiz766@terra.com.br
authors: Marcelo Luiz Campos
authors: ML
authors: Vieira
authors: César H
authors: CH
authors: Nomura
authors: Bernardino
authors: B
authors: Tranchesi Junior
authors: Wercules A de
authors: WA
authors: Oliveira
authors: Gustavo
authors: G
authors: Naccarato
authors: Bruna S
authors: BS
authors: Serpa
authors: Rodrigo B D
authors: RB
authors: Passos
authors: Marcelo B G
authors: MB
authors: Funari
authors: Cláudio H
authors: CH
authors: Fischer
authors: Samira S
authors: SS
authors: Morhy
mesh_terms: D002306:Cardiac Volume / Q000502:physiology*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume / Q000502:physiology*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016277:Ventricular Function, Left / Q000502:physiology*