Skip to main content
. 2017 Feb;38(2):410–417. doi: 10.3174/ajnr.A5044

Fig 1.

Fig 1.

Steps for registering patient 5 (acute flaccid paralysis) to template. A, Red circles indicate manual marking of anatomic features C1 and C8. Blue lines indicate axial sections illustrated in far right grid. B, Manual masking of SC centerline was done at each axial section because of signal hyperintensity interfering with automatic reconstruction of centerline. C, MNI-Poly-AMU T2-weighted template. D, SC straightening using thin-plate spline interpolation. E, Labeling of vertebral levels after registering to template and warping back to native space. F, Sagittal view of GM and WM probabilistic atlas after registering to template and warping back to native space. Far right grid, Output of template-based atlas. Column 1, Automatic vertebral body labeling and SC space. Column 2, Probabilistic masks of WM. Column 3, Probabilistic masks of GM. Column 4, Probabilistic masks of GM and WM overlaid.