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Influence of imperfect
deformable image registration
Deformable registration
•
B-spline
•
Local mutual information
•
Bending enery penalty term
•
Resampling of all data on PET voxel grid
•
Residual registration error ~1-3 mm *
Regional correlation analysis of PET/MR
data
•
Definition of sub-regions of 3x3x4 voxels
•
8.4 x 8.4 x 8 mm
3
*Leibfarth S et al. Acta Oncol
2013;52:1353-9.
CT
PET/MR
defo PET/MR