- Orange: Patients with severe atrophy (bony referenced CSA ratio < 0.30): n = 6; Orange with diagonal line: moderate atrophy (bony CSA ratio < 0.35–0.30): n = 4
- Blue: Patients with severe atrophy (conventional CSA ratio < 0.30): n = 4; Blue with diagonal line: moderate atrophy (conventional CSA ratio < 0.35–0.30): n = 3