CT scans of endplates from eight human lumbar vertebrae were used, coming from two different collaborative studies with different voxel resolutions (12 or 16 μm). A total of 50 3D parallelepiped samples (2.5 x 2.5 x 3 mm3) were created in image segmentation software ScanIP.
The models considered a squared cross section of the bony endplate. The third dimension was aligned with the superior-inferior direction. In the densest regions of each sample, the porosity was evaluated with the ScanIP measurements tool.