一般从经胃短轴（transgastric short-axis）和四腔长轴（longitudinal four-chamber view）两个切面观察。直径小于2mm 的栓子都能直接清楚的显示。
基于20个网页-相关网页
于左心长轴观、心尖或胸骨旁四腔观以及反流束横断面方位显示偏心性反流束的整体形态，评价二尖瓣的反流程度。
Its stereoscopic shape was observed in long views, the apical and parasternal four chamber views of left ventriculum and its regurgitant extent were estimated.
方法30例健康志愿者。获取标准心尖两腔、长轴、四腔观，应用解剖M-型超声技术定量测量心肌各节段的运动幅度。
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.
应用推荐