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Figure 3 Bland–Altman plots (A–C) show the limits of agreement and mean absolute differences between AVA (aortic valve area) by Cath (cardiac catheterisation) and 2D/3D (3D‐guided two‐dimensional imaging; A), RT3D (volumetric real‐time three‐dimensional echocardiography; B) and TEE (planimetry by transoesophageal echocardiography; C). Linear regression graphs (D, E) show the correlation between Cath and planimetric techniques with regard to AVA estimation: 2D/3D (D), RT3D (F) and TEE (E).
