A. Clivoaxial angle = 83 degree (cut-off value: 138.5 degree)
B. Clivodens angle= 69.8 degree( cut-off value: 123.5 degree)
C. Clivopalate angle= 6.6 degree (cut-off value: 53.5 degree)
D. Odontoid pig above Chamberlain’s line: 20 mm (cut-off value: 3 mm)
E. Skull base angle: 172 degree (cut-off value: 143 degree)