An improved physics-based approach for unfolding megavoltage bremsstrahlung spectra using transmission analysis.

@article{Ali2012AnIP,
  title={An improved physics-based approach for unfolding megavoltage bremsstrahlung spectra using transmission analysis.},
  author={E. S. M. Ali and David William Oliver Rogers},
  journal={Medical physics},
  year={2012},
  volume={39 3},
  pages={
          1663-75
        }
}
PURPOSE To develop a physics-based approach to improve the accuracy and robustness of the ill-conditioned problem of unfolding megavoltage bremsstrahlung spectra from transmission data. METHODS Spectra are specified using a rigorously-benchmarked functional form. Since ion chambers are the typical detector used in transmission measurements, the energy response of a Farmer chamber is calculated using the EGSnrc Monte Carlo code, and the effect of approximating the energy response on the… CONTINUE READING

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