Requirements for leaf position accuracy for dynamic multileaf collimation.

  title={Requirements for leaf position accuracy for dynamic multileaf collimation.},
  author={Geoff J Budgell and Joe L. Mott and Peter G. Williams and Kevin J. Brown},
  journal={Physics in medicine and biology},
  volume={45 5},
Intensity modulated radiation therapy can be achieved by driving the leaves of a multileaf collimator (MLC) across an x-ray therapy beam. Algorithms to generate the required leaf trajectories assume that the leaf positions are exactly known to the MLC controller. In practice, leaf positions depend upon calibration accuracy and stability and may vary within set tolerances. The purpose of this study was to determine the effects of potential leaf position inaccuracies on intensity modulated beams… CONTINUE READING

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