Quantitative Evaluation Of Left Ventricular Function Using64-slice CT: Comparison With UCG

Objective To assess the correlations and consistency between64-slice computed tomography(MSCT) and ultrasound cardiogram(M-mode UCG) in assessment of left ventricularmyocardial function in the patient who have regional wall motion abnormality (RWMA)orventricular aneurysm(group A)and not have regional wall motion abnormality (RWMA)orventricular aneurysm(group B).Method52patients who suspected of coronary artery disease underwent (MSCT) coronaryangiography and M-mode ultrasound cardiogram (M-mode UCG) within72hours wasdivided into two groups (A and B) according to whether have regional wall motionabnormality (RWMA)or ventricular aneurysm. The left ventricular end-systolic volume LVESV,left ventricular end-diastolic volume LVEDV,left ventricular ejection fraction LVEF), stroke volume SV of group A and B from MSCT were compared with M-modeUCG using Paired t test Pearson correlation, and made consistency checking by Bland-Altman.Result LVEF SV LVESV LVEDV of group A from MSCT were44.04±9.25%è72.41±12.04ml è96.43±31.61ml è168.84±33.00ml, LVEF SV LVESV LVEDV of group Afrom M-mode UCG were58.87±11.22%è83.28±23.35ml è61.04±26.95ml è144.33±42.85ml,LVEF, LVESV, LVEDV determined with MSCT and M-mode UCG werestatistically different in group A, the correlation was low (r=0.208~0.542). LVEF SV LVESV LVEDV of group B from MSCT were60.77±9.60%è68.89±16.59ml è45.52±18.14ml è114.78±25.20ml, LVEF SV LVESV LVEDV of group B from M-modeUCG were61.49±11.30%è70.65±17.65ml è44.72±22.03ml è115.36±26.01ml,There wasno significant difference between MSCT and M-mode UCG to evaluate ventricularfunction parameters in group B, the correlation was also good (r=0.874~0.941).Bland-Altman analysis showed a close agreement between MSCT and M-mode UCG forLVEF SV LVESV and LVEDV in group B (without regional wall motion abnormality(RWMA)or ventricular aneurysm).Conclusion The data of left ventricular function measured with MSCT were accurateand reliable, and has good correlation with M-mode UCG without having regional wall motionabnormality (RWMA)or ventricular aneurysm.