Table 4 Bland-Altman analyses and coefficients of variation comparing Feature Tracking to the reference (DENSE)
From: Comparison of left ventricular strains and torsion derived from feature tracking and DENSE CMR
| Â | Feature Tracking (Unadjusted) vs. DENSE | Feature Tracking (Adjusted) vs. DENSE | ||||
|---|---|---|---|---|---|---|
Bias | 95% Limits | CoV | Bias | 95% Limits | CoV | |
Circumferential Strain (Absolute %) | ||||||
 Base | −6.5 | ±7.7 | 25.1 | −4.0 | ±6.7 | 17.8 |
 Mid | −2.3 | ±7.3 | 13.7 | −0.4 | ±6.3 | 10.9 |
 Apex | −6.0 | ±14.3 | 22.3 | −2.4 | ±10.8 | 14.8 |
Longitudinal Strain (Absolute %) | ||||||
 Four-Chamber | −1.5 | ±10.7 | 21.3 | −0.2 | ±9.3 | 19.3 |
 Torsion (deg/cm) | −1.4 | ±2.4 | 41.1 | – | – | – |
 Dyssynchrony (ms) | 26 | ±56 | 76.3 | – | – | – |