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Table 2 Median Dice similarity coefficients (DSC) for various registration strategies and similarity measures

From: Effects of rigid and non-rigid image registration on test-retest variability of quantitative [18F]FDG PET/CT studies

Transformation Input data Program Similarity measure
    SSD NCC MI
Rigid PET Elastix 0.74 0.71 0.68
   RegisRigid 0.65 0.59 0.54
  NAC Elastix 0.59 0.59 0.56
   RegisRigid 0.59 0.60 0.60
  CT Elastix 0.71 0.71 0.72
   RegisRigid 0.72 0.72 0.71
Non-rigid PET Elastix 0.81 0.82 0.71
   splineMIRIT 0.77 0.78 0.77
  NAC Elastix 0.69 0.72 0.21
   splineMIRIT 0.66 0.73 0.74
  CT Elastix 0.68 0.67 0.68
   splineMIRIT 0.59 0.60 0.68
  CTPET Elastix 0.82 0.82 0.69
   splineMIRIT 0.77 0.78 -a
  1. aThe program was not able to obtain registrations due to memory issues; SSD = summed squared differences; NCC = normalized cross correlation; MI= mutual information