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Quantitative Assessment of Left Ventricular Function of Coronary Atherosclerotic Heart Disease with 640-Slice Dynamic Volume CT in Comparison to Echocardiography

Objective: The primary aim is to investigate the correlation between 640-slice dynamic volume computer tomography (DVCT) and echocardiography (ECHO) in the function of left ventricular (LV), and the value of DVCT in the evaluation of left coronary artery disease (LCA) and geometry
 and function of left ventricular, by measuring the difference of left ventricular function of coronary atherosclerotic heart disease with DVCT in comparison to ECHO. Materials and Methods: Sixty-three patients of coronary heart disease (CHD) with left coronary artery disease were selected,
 all of them were examined by DVCT coronary imaging and ECHO. On the basis of the American Society of Cardiovascular Computed Temography, the study applied the Coronary Artery Disease Report and Data System (CAD-RADS) to assess the left cornary artery. The end-diastolic volume (EDV), end-systolic
 volume (ESV), stroke volume (SV), ejection fraction (EF) and myocardial mass (MM) of function parameters of the left ventricle were counted. The function parameters of DVCT and ECHO were comparatively analyzed. Results: The results showed that there was a positive correlativity between
 the value of EDV, ESV, SV and EF which measured through DVCT and the ECHO (r = 0.69, 0.90, 0.60, 0.71 respectively, P < 0.05 all). The differences of ESV, SV, EF between CAD-RADS 2 and 4, CAD-RADS 3 and 4 were significant (P < 0.05). The differences of data of EDV
 and MM between CAD-RADS 2, 3 and 4 were statistically significant (P < 0.05). Conclusion: Both DVCT coronary artery imaging and ECHO can accurately assess left ventricular function and have a high correlation. DVCT coronary artery imaging can assess CAD and analyze the function
 of left ventricular. EDV and MM change significantly in CAD-RADS 3, which providing important quantitative data for clinical diagnosis and treatment plan of coronary heart disease.