Figure 2

Interpolated 3D reconstruction of mitral annulus. (A) AVJ points were tracked in two-, three-, and four-chamber cine-CMR views to create six distinct spatial points (highlighted in red) sampled in the mitral annulus (MA) per cardiac phase. (B) 3D spline interpolation was applied to the 3D space locations of these points to create a 3D reconstruction of the mitral annulus (MA). (C, D) A 3D MA sweep volume (V, highlighted in green) was generated for each cardiac phase relative to the MA area at t₁ (end diastole), by summing incremental volumes calculated from the MA area at that phase and the distance the MA traversed from the previous phase.