A technique for the quantitative evaluation of dose distributions.

  title={A technique for the quantitative evaluation of dose distributions.},
  author={Daniel A. Low and William B. Harms and Sasa Mutic and J. Purdy},
  journal={Medical physics},
  volume={25 5},
The commissioning of a three-dimensional treatment planning system requires comparisons of measured and calculated dose distributions. Techniques have been developed to facilitate quantitative comparisons, including superimposed isodoses, dose-difference, and distance-to-agreement (DTA) distributions. The criterion for acceptable calculation performance is generally defined as a tolerance of the dose and DTA in regions of low and high dose gradients, respectively. The dose difference and DTA… 

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