Two-dimensional transthoracic echocardiogram (2D TTE) from a modified two-chamber view showing the descending thoracic aorta

The descending thoracic aorta (T Ao) can be imaged from the apical two- and four-chamber view. Posterior angulation of the transducer (panel A) often opens the T Ao such that it can be seen in its long axis. Major pathology such as aneurysms can often be detected in this way. Anterior angulation in the apical two chamber view (panel B) demonstrates the proximal aortic arch (Ao).