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©2013 UpToDate ® Print Email Two-dimensional transthoracic echocardiogram (2D TTE) from a modified four-chamber view showing the descending thoracic aorta The thoracic or descending aorta (T Ao) can be imaged from the apical two and four chamber view. Posterior angulation (panel B) shows the T Ao in its short axis, located below the left atrium (LA). Anterior angulation in four chamber view (panel A) shows the origin of aortic root (Ao). RA: right atrium; LA: left atrium.
©2013 UpToDate ® Print Email Two-dimensional transthoracic echocardiogram (2D TTE) from a modified four-chamber view showing the descending thoracic aorta The thoracic or descending aorta (T Ao) can be imaged from the apical two and four chamber view. Posterior angulation (panel B) shows the T Ao in its short axis, located below the left atrium (LA). Anterior angulation in four chamber view (panel A) shows the origin of aortic root (Ao). RA: right atrium; LA: left atrium. Mildly dilated thoracic aorta The long axis precordial view shows slight dilation of the thoracic aorta (Th Ao). CS: coronary sinus.