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      Beam characteristics of energy-matched flattening filter free beams.

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          Abstract

          Flattening filter free (FFF) linear accelerators can increase treatment efficiency and plan quality. There are multiple methods of defining a FFF beam. The Elekta control system supports tuning of the delivered FFF beam energy to enable matching of the percentage depth-dose (PDD) of the flattened beam at 10 cm depth. This is compared to FFF beams where the linac control parameters are identical to those for the flattened beam. All beams were delivered on an Elekta Synergy accelerator with an Agility multi-leaf collimator installed and compared to the standard, flattened beam. The aim of this study is to compare "matched" FFF beams to both "unmatched" FFF beams and flattened beams to determine the benefits of matching beams.

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          Author and article information

          Journal
          Med Phys
          Medical physics
          Wiley-Blackwell
          2473-4209
          0094-2405
          May 2014
          : 41
          : 5
          Affiliations
          [1 ] St James Institute of Oncology The Leeds Teaching Hospitals NHS Trust, Medical Physics, Leeds LS9 7TF, United Kingdom.
          [2 ] LIGHT Institute University of Leeds Leeds LS2 9JT, Division of Medical Physics, Leeds, United Kingdom.
          [3 ] LIGHT Institute University of Leeds Leeds LS2 9JT, Division of Medical Physics, Leeds, United Kingdom and Institute of Medical Physics, School of Physics, University of Sydney, Australia.
          Article
          10.1118/1.4871615
          24784392
          4e6096dd-a778-4c66-a18a-7b15e771ffef
          History

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