Table 3.
Values for systolic deformation parameters obtained using feature tracking for global and slice values in the volunteers studied (basal, mid, apical)
| |
Longitudinal |
Radial |
Circumferential |
Rotation (deg) | Rotation rate (deg/s) | Torsion (deg) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Level | Strain | Strain rate (s-1) | Velocity (cm/s) | Displacement (cm) | Strain | Strain rate (s-1) | Velocity (cm/s) | Displacement (cm) | Strain | Strain rate (s-1) | |||
| Global |
−0.19 ± 0.03 |
−1.08 ± 0.24 |
2.60 ± 0.55 |
5.04 ± 1.14 |
0.25 ± 0.06 |
1.25 ± 0.4 |
2.5 ± 0.36 |
5.1 ± .073 |
−0.21 ± 0.03 |
1.21 ± 0.18 |
N/A |
N/A |
15.52 ± 7.55 |
| Basal |
−0.21 ± 0.05 |
−1.21 ± 0.36 |
3.38 ± 0.72 |
6.61 ± 1.83 |
0.26 ± 0.08 |
1.23 ± 0.39 |
2.84 ± 0.53 |
6.02 ± 1.08 |
−0.22 ± 0.04 |
−1.33 ± 0.28 |
−8.44 ± 6.06 |
−59.79 ± 33.44 |
N/A |
| Mid |
−0.19 ± 0.04 |
−1.08 ± 0.27 |
2.65 ± 0.69 |
6.37 ± 10.15 |
0.24 ± 0.08 |
1.25 ± 0.36 |
2.48 ± 0.41 |
4.89 ± 0.82 |
−0.18 ± 0.03 |
−1.05 ± .018 |
N/A |
N/A |
N/A |
| Apical | −0.16 ± 0.05 | −0.98 ± 0.34 | 1.7 ± 0.74 | 2.74 ± 1.15 | 0.23 ± 0.09 | 1.18 ± 0.43 | 2.19 ± 0.41 | 4.38 ± 0.82 | −0.21 ± 0.38 | −1.26 ±0.25 | 7.36 ± 5.38 | 52.90 ± 28.78 | N/A |
Data are presented as mean ± SD. s, seconds; cm, centimetres; deg, degrees; N/A, not applicable.