Left ventricular ejection fraction and volumes as measured by 3d echocardiography and ultrafast computed tomography

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.

To compare LVEF and volume measurements as obtained using RT-3D-Echo and ultrafast CT.

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.

coefficient of correlation (r: Pearson), Bland-Altman analysis, linear regression analysis, 95% CI, p<0.05.

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).

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.