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Figure 8 VC Sphericity Affects 2D and 3D Method Accuracy
To evaluate the impact of regurgitant orifice shape, a VC sphericity index was derived from a single 3D-VC area measure by dividing the largest VC diameter by the smallest VC diameter. Upper panels depict the relation of 2D-VC diameter to EROA (A) and 3D-VC area to EROA (B) for sphericity index  2 (circular or elliptical VC shape); lower panels depict the same relations for a sphericity index >2 (irregular VC shape). Dotted orange lines as in Figure 4. Abbreviations as in Figures 1 and 5.
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