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Table 1 Summary statistics showed good agreement for all ke between 0.04 and 0.10 cycles/mm. Larger biases, 95 % LoA, and CoVs were observed for ke of 0.02 cycles/mm

From: 2D cine DENSE with low encoding frequencies accurately quantifies cardiac mechanics with improved image characteristics

E(ke)** Circumferential Strain (%) Radial Strain (%) Twist (Degrees)
Bias 95 % LoA Mean CoV p-value Bias 95 % LoA Mean CoV p-value Bias 95 % LoA Mean CoV p-value
E0.10 – E0.02 −1.9 ±5.0 11 % <0.01* 3.9 ±20.4 23 % 0.11 −0.48 ±1.92 14 % 0.04*
E0.10 – E0.04 −0.6 ±3.6 6 % 0.15 −0.0 ±15.9 14 % 1.00 −0.14 ±1.22 8 % 0.32
E0.10 – E0.06 0.0 ±3.2 6 % 0.91 0.8 ±12.8 13 % 0.59 −0.22 ±0.93 6 % 0.05
E0.10 – E0.08 0.1 ±2.6 4 % 0.67 −0.5 ±10.9 11 % 0.67 −0.13 ±0.77 5 % 0.16
Inter-test 0.1 ±2.0 4 % 0.53 0.9 ±13.0 12 % 0.54 −0.05 ±0.87 5 % 0.59
  1. *Statistical significance between peak measures of mechanics using paired-sample t-test at significance level α = 0.05
  2. **\( {E}_{\left[{\boldsymbol{k}}_{\boldsymbol{e}}\right]} \) represents peak strain or twist measured using a particular ke
  3. Abbreviations: LoA limits of agreement, CoV coefficient of variation