The process of part of measuring parameters using Mimics 14.11 software.

<p>A: The target vertebra was chosen in Mimics 14.11 software. Three lines (AP-UP, ME-TE, PP-UP) were drawn and the cutting plane was adopted with the midpoint of the three lines. 1, AP-UP: The line between left and right anterior part of unicinate process. 2, ME-TF: The line between left and right medial edge of transverse foramen. 3, PP-UP: The line between left and right posterior part of unicinate process. B: Profile of the cutting plane can be observed by rotation. C: The cutting vertebral body was colored. D: The aVBH was measured.