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1. (WO2018054907) CONTROLLING AND SHAPING THE DOSE DISTRIBUTION OUTSIDE TREATMENT TARGETS IN EXTERNAL-BEAM RADIATION TREATMENTS

Pub. No.:    WO/2018/054907    International Application No.:    PCT/EP2017/073652
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Wed Sep 20 01:59:59 CEST 2017
IPC: A61N 5/10
Applicants: VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
Inventors: OLLILA, Santtu
VAINIO, Mikko
PELTOLA, Jarkko
NORD, Janne
Title: CONTROLLING AND SHAPING THE DOSE DISTRIBUTION OUTSIDE TREATMENT TARGETS IN EXTERNAL-BEAM RADIATION TREATMENTS
Abstract:
Streamlined and partially automated methods of setting normal tissue objectives in radiation treatment planning are provided. These methods may be applied to multiple-target cases as well as single-target cases. The methods can impose one or more target-specific dose falloff constraints around each target, taking into account geometric characteristics of each target such as target volume and shape. In some embodiments, methods can also take into account a planner's preferences for target dose homogeneity. In some embodiments, methods can generate additional dose falloff constraints in locations between two targets where dose bridging is likely to occur.