Table 7 Helix angle (HA) reproducibility (degrees)
HA | N | Mean value | Mean difference | SD of difference | 95% limits of agreement | |
|---|---|---|---|---|---|---|
Global | ||||||
 Endo | 10 | 38.4 | 1.2 | 4.8 | −8.3 | 10.6 |
 Meso | 10 | 3.9 | −0.6 | 3.4 | −7.3 | 6.0 |
 Epi | 10 | −33.1 | −2.7 | 2.9 | −8.4 | 3.0 |
 Apical endo | 10 | 39.5 | 3.0 | 10.6 | −17.8 | 23.9 |
 Apical meso | 10 | 4.3 | 0.0 | 6.1 | −12.0 | 12.0 |
 Apical epi | 10 | −32.0 | −3.6 | 6.4 | −16.2 | 8.9 |
 Mid endo | 10 | 39.1 | 1.9 | 6.2 | −10.3 | 14.1 |
 Mid meso | 10 | 3.4 | −0.7 | 4.7 | −9.9 | 8.4 |
 Mid epi | 10 | −33.0 | −2.9 | 6.8 | −16.2 | 10.4 |
 Basal endo | 10 | 36.6 | −0.8 | 4.4 | −9.3 | 7.8 |
 Basal meso | 10 | 4.1 | −1.1 | 3.2 | −7.3 | 5.2 |
 Basal epi | 10 | −33.9 | −1.8 | 4.7 | −11.0 | 7.4 |
LV wall | ||||||
 Anterior endo | 10 | 43.2 | 3.7 | 8.6 | −13.2 | 20.5 |
 Anterior meso | 10 | 6.0 | 2.6 | 5.5 | −8.1 | 13.3 |
 Anterior epi | 10 | −36.5 | −0.9 | 7.3 | −15.2 | 13.5 |
 Lateral endo | 10 | 42.6 | 0.0 | 4.9 | −9.7 | 9.7 |
 Lateral meso | 10 | 8.7 | −2.2 | 6.9 | −15.8 | 11.4 |
 Lateral epi | 10 | −27.7 | −2.0 | 7.8 | −17.4 | 13.3 |
 Inferior endo | 10 | 34.2 | −0.6 | 6.7 | −13.6 | 12.5 |
 Inferior meso | 10 | 0.7 | −1.7 | 7.2 | −15.9 | 12.4 |
 Inferior epi | 10 | −30.8 | −3.2 | 9.4 | −21.7 | 15.3 |
 Septal endo | 10 | 33.3 | 1.6 | 8.0 | −14.1 | 17.4 |
 Septal meso | 10 | 0.2 | −1.8 | 6.8 | −15.1 | 11.6 |
 Septal epi | 10 | −36.7 | −4.9 | 7.3 | −19.3 | 9.5 |