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. Author manuscript; available in PMC: 2019 Oct 15.
Published in final edited form as: Spine (Phila Pa 1976). 2018 Oct 15;43(20):E1204–E1209. doi: 10.1097/BRS.0000000000002667

Figure 1.

Figure 1

High resolution transverse slices with high white matter to gray matter contrast were acquired at the plane of each cervical intervertebral disc level (A). Image processing and analysis was performed using the Spinal Cord Toolbox and the PAM50 spinal cord template. The spinal cord template was initially registered to the volume using a spinal cord segmentation mask (B) to first co-register the images. The initial registration of the gray matter is shown in C. The spinal cord gray matter was then segmented from the images, and the registration of the template was finely-tuned using the internal structure of the spinal cord (D). The spinal cord template and white matter atlas (E) were then warped to the volume, and cross-sectional morphometric measures (i.e., anterior-posterior spinal cord diameter and eccentricity) and white matter tract volumes were extracted. The example images are from the C2–3 disc level.