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Figure 2 A, Schematic of parasternal long-axis view. Aortic annulus (1) and aortic root (2) diameters measured in systole. B, Schematic of suprasternal notch view. Ascending aorta (3), transverse aorta (4) and aortic isthmus (5) diameters measured in systole. C, Schematic of apical 4-chamber view. Tricuspid (6) and mitral (7) valves measured in diastole. Ao = aorta; LA = left atrium; LV = left ventricle; MV = mitral valve; RA = right atrium; RCA = right carotid artery; RSA = right subclavian artery; RV = right ventricle; TV = tricuspid valve; other abbreviations as in Figure 1.
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