Target registration errors (TRE) for the left and right modes of deformation. It should be noted that 43 sub-surface targets were used to compute TRE. Post-PBReg: TRE using the point-based rigid registration algorithm. Post-wICP: TRE using the wICP algorithm. TRE computed using the wICP algorithm was used as “ground truth” for the proposed computational approach. Post-Model: Target errors generated using the proposed computational approach. “Full Surface”: Deformed surface description acquired by the CT scanner. “Partial surface”: Deformed surface description acquired by the laser range scanner. Mean ± Standard deviation (maximum) of the values has reported in ‘mm’ units.