Deformable image registration (DIR) is a versatile tool used in many applications in
radiotherapy (RT). DIR algorithms have been implemented in many commercial treatment …

Purpose The performance of deformable medical image registration (DIR) algorithms has
become a major concern. Methods We aimed to obtain updated information on DIR …

Proton therapy plans are very sensitive to anatomical changes such as density changes
along the pencil-beam paths and changes in organ shape and location. Previously, we …

Purpose A major burden of introducing an online daily adaptive proton therapy (DAPT)
workflow is the time and resources needed to correct the daily propagated contours. In this …

We assessed the accuracy of deformable image registration (DIR) accuracy between CT
and MR images using an open-source software (Elastix, from Utrecht Medical Center) and a …

Background/purpose Intensity-modulated proton therapy (IMPT) is highly sensitive to
anatomical variations which can cause inadequate target coverage during treatment …

Simple Summary The fast and accurate definition of structures is a main limiting factor in
online adaptive proton therapy. In this study, different methods to include structure …

Objective. This study describes geometry-based and intensity-based tools for quality
assurance (QA) of automatically generated structures for online adaptive radiotherapy, and …