Flattening filter free in intensity‐modulated radiotherapy (IMRT) – Theoretical modeling with delivery efficiency analysis
Medical Physics2018Vol. 46(1), pp. 34–44
Citations Over TimeTop 12% of 2018 papers
Abstract
The filter modeling and BOT calculation enable us to quantify delivery efficiency of the FFF beam and flattened beam in a unified approach. The FFF beam minimized the BOT both theoretically and in simulations for all clinically relevant field sizes and fluence maps in IMRT. The results for conformal fields imply that the FFF beam requires less BOT than the flattened beam for volumetric modulated arc therapy (VMAT) treatments. The delivery efficiency consideration favors the FFF beam in intensity-modulated treatments and may eventually lead to removal of the FF in all future linear accelerator head designs.
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