The Correlation Study Of Left Ventricular Function With Dual-source CT In Comparison To Cardiac MRI

Objective:To compare the assessment of left ventricular functional parameters in DSCT(Dual-source CT)and MRI, evaluate the correlation between them, and the application value of DSCT in evaluating the function of the left ventricular.Methods:Twenty patients with coronary heart disease underwent DSCT and MRI examinations, and calculated EDV, ESV and EF of the left ventricular respectively. Compared the parameters with cardiac MRI as standard of reference, and made correlative analysis and consistency checking.Results:In DSCT, EDV and ESV were 118.80±19.43mland 43.65±18.06ml;compared with 102.39±19.41ml EDV, 47.82±19.25ml ESV in MRI. Thus EDV was overestimated by 16.42ml(95% confidence interval 9.59～23.24), while ESV was underestimated by 4.17ml (95% confidence interval -8.69～0.35). Mean EF was 63.75±10.59% in DSCT and 54.34±11.15% in MRI, resulting in an overestimation of EF by 9.41%(95% confidence interval 6.92～11.90%). Pearson correlation coefficient(r) were 0.718 for EDV (P<0.001), 0.868 for ESV (P<0.001), 0.881 for EF (P<0.001).Spearman rank correlation (rs) were EDV/0.736(P<0.001),ESV/0.760(P<0.001),EF/0.645(P=0.002).Conclusion:Assessment of left ventricular function with DSCT had high correlation coefficient to MRI. DSCT could as a tool of one-stop-shop for some indications in heart evaluation.