Objective To evaluate the value of Ultrasonic simplified biplane Simpson method in detecting left ventricular systolic function. Method 45 cases of patients who were diagnosed with heart disease( Among patients without left ventricular wall motion abnormality in 20 cases,Patients with segmental left ventricular wall motion abnormality in 25 cases) And the normal control group of 20 cases. Application of ultrasonic simplified biplane Simpson method and the M type ultrasonic detection of left ventricular ejection fraction( EF%),And the contra...