Reduction of Transitivity Errors in Radiotherapy Image Registration

摘要

Deformation maps (e.g. deformation vector fields) used for correcting image-type data used in the treatment of patients in radiotherapy may be processed to eliminate inverse inconsistency and transitivity type errors which produce different results depending on the order or path of the calculation of deformation. The correction permits registration of a treatment plan with the changing patient image and accumulation of dose to a common reference frame without transformation dependent artifacts.