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. 2018 Mar 23;19(2):296–300. doi: 10.4142/jvs.2018.19.2.296

Fig. 1. Method of measuring the variables. The ratios of width to height of the spinal cord (A and D) and of the vertebral foramen (B) were obtained. (C) The ratio of cross-sectional area of the spinal cord (asterisk) to that of the vertebral foramen (arrow) was measured. All measurements were obtained at the vertebral body level (A–C) or intervertebral disc space level (D).

Fig. 1