Effects of averaging over motion and the resulting systematic errors in radiation therapy.

@article{Evans2006EffectsOA,
  title={Effects of averaging over motion and the resulting systematic errors in radiation therapy.},
  author={P. M. Evans and Catherine Coolens and Elena Nioutsikou},
  journal={Physics in medicine and biology},
  year={2006},
  volume={51 1},
  pages={N1-7}
}
The potential for systematic errors in radiotherapy of a breathing patient is considered using the statistical model of Bortfeld et al (2002 Phys. Med. Biol. 47 2203-20). It is shown that although averaging over 30 fractions does result in a narrow Gaussian distribution of errors, as predicted by the central limit theorem, the fact that one or a few samples of the breathing patient's motion distribution are used for treatment planning (in contrast to the many treatment fractions that are likely… CONTINUE READING

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