SEPS:PRISM | M. R. Dwyer S02_Projected_Distance_Sensitivity SEPS calculation from retained coordinates on Shamsi et al. (2020), Figure 2 panel F. The selected endpoints span 192.0521 pixels. A 140-pixel bar labeled 100 µm gives 137.1801 µm. Independent endpoint displacement radii of 3 pixels and bar-end displacements of 1 pixel yield scenario bounds of 131.0226–143.5160 µm. These are geometric sensitivity bounds, not confidence limits or validated anatomical dimensions. We do not reproduce an altered source montage. Source: doi:10.1016/j.ijppaw.2020.01.010 Figure 2F Status: research measurement with anatomical review pending