Table 2: Intraclass Correlation Coefficients for Intra-Observer and Inter-Observer in 14 Metrics

Metric Inter-Rater ICC Intra-Rater ICC
Q angle-thoracic curve
Q angle-lumbar curve
0.99
0.99
0.99
0.99
Area of Back 0.90 0.99
Area Ratio 0.89 0.99
Kyphosis 0.99 0.99
Lordosis 0.82 0.99
Suzuki Hump Sum 0.99 0.99
POTSI 0.99 0.99
Volume of Interest (VOI) 0.99 0.99
T1-S1 angle 0.99 0.99
T1-S1 deviation 0.99 0.99
T1-NC angle 0.99 0.99
T1-NC deviation 0.99 0.99
Back Height 0.99 0.99
Pelvic Tilt 0.99 0.61