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Table 4 Results of the shear wave imaging study

From: Local myocardial stiffness variations identified by high frame rate shear wave echocardiography

Category 1 = Normal volunteers
N = 10
2 = HCM patients without septal reduction
N = 10
3 = HCM patients post septal reduction
N = 10
ANOVA
p
2 vs 3
  ANOVA
p
1 vs 2
  ANOVA
p
1 vs 3
Color TDI frame rate [Hz] 528 ± 22 530 ± 25 0.9 514 ± 17 0.4 0.3
Aortic shear wave velocity in non-ablated segments [m/s] 3.6 ± 0.4 5.3 ± 1 < 0.0001 5.3 ± 0.7 < 0.0001 0.9
Slope/velocity shift present in any layer 0 0 8  
  1. HCM Hypertrophic cardiomyopathy; TDI Tissue Doppler Imaging