Modified sector-integration method for predicting the output factors of electron beams including extended source to surface distance.

@article{Choi2000ModifiedSM,
  title={Modified sector-integration method for predicting the output factors of electron beams including extended source to surface distance.},
  author={David R Choi and Janik Wolters and David D. M. Mason and Andrew Baillie},
  journal={Physics in medicine and biology},
  year={2000},
  volume={45 11},
  pages={
          3367-72
        }
}
A modified sector-integration method is presented that can predict the output factors of irregular shaped electron fields even in the case of extended source to surface distance (SSD). The model takes as input measured output factors for circular inserts of various radii. These circular fields were measured at SSDs of 100, 105 and 110 cm to determine the effective source distance as a function of radius (ESD(r)). For an arbitrary electron field at any SSD, the shape is divided into small… CONTINUE READING

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