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Figure 3: Correction of vertebral body rotation using fiducials. Y1 and Y2 fiducials are marked on the centre of the posterior elements and the anterior edge of the vertebral body, respectively, in the axial cut. (a) Display of marking of fiducials Y1 and Y2 on the vertebral body. (b) Display of vertebral body after yaw correction. Y4 is the calculated fiducial by the software for yaw correction

Figure 3: Correction of vertebral body rotation using fiducials. Y1 and Y2 fiducials are marked on the centre of the posterior elements and the anterior edge of the vertebral body, respectively, in the axial cut. (a) Display of marking of fiducials Y1 and Y2 on the vertebral body. (b) Display of vertebral body after yaw correction. Y4 is the calculated fiducial by the software for yaw correction