When the sector edge of the transducer is directed dorsally you should see a long axis [or sagittal] view of the left side of the heart, displaying both the left atrium and the left ventricle.

• 当探头边缘指向背部方向时，你应当可以见到一个心脏左侧的纵轴[或是纵剖面]显像，同时显示左心房与左心室。