Image Type X-Ray CT Scan MRI Scan Cervical Spine Sagittal Vertical Axis (SVA) Chamberlain’s Line / McGregor’s Line Cervical C2-7 lordosis Atlantodental Interval (ADI) C2 Tilt Posterior Atlantodental Interval (PADI) Power’s ratio C2–C7 Coronal Cobb Angle Basion-Dens Interval (BDI) Basion-Axial Interval Torg/Pavlov Canal-to-Body Ratio George’s Line (Posterior Cervical Line) C2-C7 Translation Occipital Condyle–C1 Interval (CCI) Sagittal Canal Diameter Spinolaminar line Flexion-Extension Interpedicular Distance (IPD) Swischuk Line
