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Table 1 Ratio of major/minor axes (AL-PM/AP) and non-planar angles by 3D VSAP and direct measurements in pipe cleaners and the mitral annuloplasty rings

From: Mitral valve analysis adding a virtual semi-transparent annulus plane for detection of prolapsing segments

Pipe cleaner   Echo with 3D VSAP   Direct measurements  
Number   AL-PM/AP Ratio Non-planar angle AL-PM/AP Ratio Non-planar angle
1   1.38 139 1.36 139
2   1.27 125 1.26 124
3   1.52 130 1.45 128
4   1.67 90 1.66 91
5   1.39 131 1.40 122
6   1.21 158 1.53 159
7   1.34 132 1.37 128
8   1.36 154 1.36 153
9   1.45 150 1.43 150
10   1.39 146 1.43 146
Annuloplasty rings   Echo with 3D VSAP   Direct measurements  
Type Size AL-PM/AP Ratio Non-planar angle AL-PM/AP Ratio Non-planar angle
Edwards Physio® I 36 mm 1.49 142 1.46 140
Edwards Physio® II 34 mm 1.30 147 1.34 147
Edwards IMR® ring 30 mm 1.49 171 1.51 170
  1. AL-PM anterolateral-posteromedial diameter, AP anteroposterior diameter, VSAP virtual semi-transparent annulus plane