Clinical Study To Evaluate Regional Myocardial Function By Tissue Doppler Imaging, Color Kinesis And Acoustic Densitometry In Patients With Myocardial Infarction

Objective: To evaluate the clinical value of doppler tissue imaging (DTI), color kinesis (CK) and acoustic densitometry (AD) in assessment of the non-infarcted regional myocardial function and it's relationships with the globle left ventricular systolic function..Methods: 20 myocardial infarction (MI) patients with LVEF^ 45%,36 MI patients with LVEF> 45%,and 23 normals were examiaed with conventional 2-D echocardiography and DTI. CK. AD; The wall thickness (IVSd) and the percent of systolic wall thickening (WT%), DTI-Sa ,DTI-Ea,DTI-Aa ,the distance and the velocities of systolic endocardia! motion(CKd,CKv),IBS and CVIB (AD parameters) were measured in the non-infarction segments of the basal intervrntricular septum (IVS).Results: The IVS was thicken in both of myocardial infarction groups . In MI group with LVEF>45%, WT%,CKd ,CKv, Ea andCVIB in the basal IVS were lower than those in the normals.(P<0.05); In MI group with LVEF^45%, WT%,CKd, CKv, Sa, Ea ,Aa and CVIB were lower and IBS was higher..compared with normals and the MI group with LVEF >45%. CKd CKv and CVIB corelated with WT% respectively (r=0.46 ,r= 0.44 r=0.31 PO.01), CVIB had a good linear relation to Ea (r=0.53,P<0.01). Meanwhile LVEF corelated well with CKd ,CKv, WT% and CVIB respectively (r=0.63,r=0.60,r=0.53,r=0.53. PO.01).Conclusion: All of the DTI, CK, AD paramenters were considered to be valuable to assess the function of regional myocardial. The remodeling of non-infacted myocardial could cause the change of systolic and diastolic function , which is in corresponding with the decreasing of LV systolic function.