Table 3 Image registration parameters

Step size/block size

0.5/[16]

Update rule

Additive

Pyramid levels

8

Pyramid stop level

1

Regularization weight map

[0.05,0.05,0.05,0.1] (air, adipose tissue, soft tissue, bone)

CT image

0.5

0.4

0.5

Masks

 Liver

0.1

–

–

 Spleen

0.1

–

–

 Body

0.15

0.1

0.1

 Vertebra

0.15

0.2

–

 Skeletal muscle

–

0.2

–

 ISAT

–

0.1

–

 Bone

–

–

0.2

 Lean tissue

–

–

0.2