Table 2.
Feature Tracking, interobserver and intraobserver coefficient of variation
| |
Global |
Basal |
Mid |
Apical |
||||
|---|---|---|---|---|---|---|---|---|
| FT Interobserver agreement | FT Intraobserver agreement | FT Interobserver agreement | FT Intraobserver agreement | FT Interobserver agreement | FT Intraobserver agreement | FT Interobserver agreement | FT Intraobserver agreement | |
| Longitudinal Strain |
10.9 |
12.3 |
10.8 |
17.7 |
17.5 |
17.7 |
31.3 |
42.7 |
| Longitudinal Strain Rate |
16.2 |
16.0 |
34.3 |
19.2 |
21.1 |
17.8 |
25.6 |
23.2 |
| Radial Strain |
32.3 |
22.9 |
13.5 |
48.5 |
26.3 |
14.8 |
29.1 |
23.9 |
| Radial Strain Rate |
14.9 |
15.6 |
15.8 |
14.1 |
27.2 |
11.3 |
31.3 |
30.2 |
| Circumferential Strain |
4.9 |
2.8 |
3.2 |
6.0 |
4.5 |
6.4 |
9.2 |
6.0 |
| Circumferential Strain rate |
7.9 |
6.3 |
15.9 |
6.3 |
6.9 |
18.3 |
17.3 |
9.1 |
| Longitudinal Velocity |
13.2 |
22.2 |
24.3 |
23.3 |
33.7 |
32.2 |
65.5 |
31.2 |
| Longitudinal Displacement |
18.6 |
31.8 |
25.6 |
18.1 |
37.2 |
34.9 |
43.9 |
75.6 |
| Radial Velocity |
2.4 |
6.2 |
5.2 |
5.1 |
5.0 |
4.5 |
6.2 |
7.3 |
| Radial Displacement | 2.7 | 4.3 | 7.5 | 4.3 | 6.4 | 4.5 | 7.5 | 5.7 |
CMR indicates cardiac magnetic resonance; FT, feature tracking.