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Bland–Altman analysis showing better agreement between aortic valve area calculated from three-dimensional continuity [AVA(3D-SV)] and three-dimensional planimetry (AVA(3D-Pl) (on the right panel) than that between aortic valve area from two-dimensional continuity [AVA(2D)] and planimetered area (left panel). Dashed lines represent ±2SD from the mean.
