THE γ-INDEX CONCEPT INTRODUCED by Low et al.  has been widely used to compare two dose distributions in cancer radiotherapy. With the recently developed and more sophisticated treatment modalities such as volumetric-modulated arc therapy (VMAT) , the comparison of three-dimensional (3D) dose distributions becomes necessary in patient-specific treatment plans quality assurance (QA). However, comparing two 3D dose distributions is still a time-consuming (e.g., many minutes) task, because of the involvement of computational intensive tasks such as interpolation of dose grid and exhaustive search. There is a clinical need to significantly speed up 3D γ-index computations.
ASJC Scopus subject areas
- Physics and Astronomy(all)