Normative MR Cervical Spinal Canal Dimensions

Normative ranges for the sagittal diameters and areas of spinal canal and spinal cord were defined on C1, C3, and C6 levels for men and women; in addition to a calculation of normative ranges for a specific sex, spinal level, age, and body height data, data for three different height subgroups at 45 years of age was extracted; these results show a range of the spinal canal dimensions on C1 from 10.7 to 19.7 mm, on C3 from 9.4 to 17.2 mm, and on C6 from 9.2 to 16.8 mm.