Abstract: Objective: To evaluate the clinical value of Two-dimensional strain echocardiography in the quantitative evaluation of myocardial infarction left ventricular regional wall motion abnormalities. Methods : 40 patiengts with myocardial infarction(According to history, signs, ECG and myocardial enzymes diagnosis, part of the coronary angiography) and 40 healthy subjects. Access to apical left ventricular long axis, apical four-chamber and apical two-chamber left ventricular cardiac cycles of 3 consecutive dynamic two-dimensional gray scale image. Quantitative analysis of two-dimensional strain software, quantitative analysis of left ventricular segments, Automatically appear in each region of interest along the myocardial wall segment fiber direction of the longitudinal peak systolic strain and strain curves, And automatically derived bovine strain of paragraph 18 chart. Results: Control group, left ventricular systolic longitudinal strain of each segment is negative. Absolute value of the strain from the basal part of the middle section to the apical segments gradually increase, but the difference was not statistically significant (P> 0.05). Wall myocardial infarction, no corresponding changes in the corresponding set of rules.However, the absolute value of each segment strain than the normal control group were significantly lower (P <0.05). Conclusion: Two-dimensional strain echocardiography for myocardial infarction left ventricular regional wall motion abnormalities after an objective quantitative evaluation.

Key words: two-dimensional strain, echocardiography, myocardial infarction