Gamma index calculations

Xuejun Gu

Research output: Chapter in Book/Report/Conference proceedingChapter


THE γ-INDEX CONCEPT INTRODUCED by Low et al. [1] 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) [2], 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.

Original languageEnglish (US)
Title of host publicationGraphics Processing Unit-Based High Performance Computing in Radiation Therapy
PublisherCRC Press
Number of pages18
ISBN (Electronic)9781482244793
ISBN (Print)9781482244786
StatePublished - Jan 1 2015

ASJC Scopus subject areas

  • Medicine(all)
  • Physics and Astronomy(all)


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