A thin membrane as an echogenic band stretching across the left atrium could be identified with echocardiography on the parasternal and apical long axis views;
胸骨旁及心尖长轴位心动超声图确定左房内异常隔膜形成的回声增强亮带；
2
Methods Standard apical two-chamber, four-chamber and long-axis views of 30 healthy volunteers were acquired and the wall motion amplitudes of each segment were measured.