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Figure 18: (a) Upper esophageal aortic arch short-axis view demonstrating the narrowing (arrow) of the aorta below the level of left subclavian artery. (b) Turbulent flow across the narrowed segment

Figure 18: (a) Upper esophageal aortic arch short-axis view demonstrating the narrowing (arrow) of the aorta below the level of left subclavian artery. (b) Turbulent flow across the narrowed segment