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Table 3 Mitral annular dimensions in the different types of MR based on Carpentier’s classification

From: Dynamic changes of mitral valve annulus geometry at preprocedural CT: relationship with functional classes of regurgitation

  Type I (total, 3) Type II (total, 16) Type IIIa (total, 16) Type IIIb (total, 16) p value
Mitral valve geometry
 D-shaped area max, cm2 15.9 ± 7.8 18.0 ± 4.5a 12.9 ± 2.4a 15.8 ± 3.2 0.002
 Maximum TT distance, mm 30.3 ± 7.9 27.5 ± 4.5 25.4 ± 3.5 26.0 ± 2.9 0.152
 Maximum IC diameter, mm 47.9 ± 3.1 52.6 ± 6.4a 44.4 ± 5.0a 49.0 ± 5.6 0.002
 Maximum SL diameter, mm 41.4 ± 2.3 42.5 ± 6.0a 36.5 ± 5.0a 40.8 ± 4.4 0.013
 Calcification volume, cm3 0 ± 0 635 ± 2,031 1,331± 2,551 360 ± 1,106 0.469
 Maximum area in 20–40% cycle 1/3, 33% 10/16, 63% 8/16, 50% 8/16, 50% -
 Maximum area in 60–80% cycle 1/3, 33% 3/16, 19% 5/16, 31% 3/16, 19% -
  1. Data are reported as mean ± standard deviation
  2. MR Mitral valve regurgitation, TT Trigone-to-trigone distance, IC Intercommissural diameter, SL Septal-to-lateral diameter
  3. aAt post hoc analysis significant differences (p = 0.001 for each parameter)