APPLICATION OF DTI-M MODE AND FREGUENCY SPECTRUM TO ASSESS MITRAL ANNULAR MOTION OF LEFT VENTRICULAR FUNCTION / 解放军医学杂志

ABSTRACT

Objective To analyse the mitral annular abnormal motion in patients with myocardial infarction by using M-mode and freguency spectrum Doppler tissue imaging (DTI-M), and study its clinical value in assessing the LV function. Methods The total systolic annular displacement (MD), early diastolic displacement (MDe), late diastolic displacement (MDa) of posterier valve of mitral annular, systolic and diastolic motion velocilies (V S,V E,V A), time velocity integrals (TV IS,TV IE,TV IA) of the lateral wall of the mitral annulus were determined with DTI-M mode and freguency spectrum from apical four-chamber view in 28 cases of patients with myocardial infarction. Results The MD, MDe, MDe/MDa in patients with myocardial infarction were found to be decreased significantly (P