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©2013 UpToDate ® Print Email Two-dimensional transthoracic echocardiogram (2D TTE) from the parasternal short axis view at the level of the coronary arteries The origins of the right (RCA) and left (LCA) coronary arteries can be seen on the short axis precordial view, obtained through the aortic root (Ao) just above the valves; there is a vague "pinwheel" relationship of the sweep of the arteries. Additionally, the left atrial appendage (LAA) is seen just inferior to the LCA and the pulmonary valve (PV) just superior. LA: left atrium. Short axis view of left main coronary artery The short axis view, with the imaging plane through the aortic root (AO) just above the aortic valve, demonstrates the left main coronary artery (LMCA). Panel B shows the M-mode echocardiogram of the LMCA. PV: pulmonary valve.
©2013 UpToDate ® Print Email Two-dimensional transthoracic echocardiogram (2D TTE) from the parasternal short axis view at the level of the coronary arteries The origins of the right (RCA) and left (LCA) coronary arteries can be seen on the short axis precordial view, obtained through the aortic root (Ao) just above the valves; there is a vague "pinwheel" relationship of the sweep of the arteries. Additionally, the left atrial appendage (LAA) is seen just inferior to the LCA and the pulmonary valve (PV) just superior. LA: left atrium.