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Figure 1: Four methods of measurement of EROA are shown in the figure. (a) Shows 2D-HS-PISA radius measured in midesophageal long axis view using zoom mode (b) Method to measure 3D-VCA from 3D color full volume dataset. The blue window displays enface view of vena contracta which is directly traced to measure its area. (c) Methods of 3D-HS-PISA and 3D-HE-PISA measurements: The diameters D2 and D3 of the PISA shell were measured in the blue window. Abbreviations: - PISA: Proximal isovelocity surface area. MR: Mitral regurgitation; 3D-VCA: 3D vena contracta area; HS: Hemispherical; HE: Hemielliptical

Figure 1: Four methods of measurement of EROA are shown in the figure. (a) Shows 2D-HS-PISA radius measured in midesophageal long axis view using zoom mode (b) Method to measure 3D-VCA from 3D color full volume dataset. The blue window displays enface view of vena contracta which is directly traced to measure its area. (c) Methods of 3D-HS-PISA and 3D-HE-PISA measurements: The diameters D2 and D3 of the PISA shell were measured in the blue window. Abbreviations: - PISA: Proximal isovelocity surface area. MR: Mitral regurgitation; 3D-VCA: 3D vena contracta area; HS: Hemispherical; HE: Hemielliptical