Home / Store / Journals / Electronic Articles / Nuclear Technology / Volume 175 / Number 1
Bryan Bednarz, Gty Chen, Harald Paganetti, Bin Han, Aiping Ding, X. George Xu
Volume 175 / Number 1 / July 2011 / Pages 2-5
Format:electronic copy (download)
The accuracy of proton therapy is partially limited by uncertainties that result from changing pathological conditions in the patient such as tumor motion and shrinkage. These uncertainties can be minimized with the help of a time-resolved range telescope. Monte Carlo methods can help improve the performance of range telescopes by tracking proton interactions on a particle-by-particle basis thus broadening our understanding on the behavior of protons within the patient and the detector. This paper compared the proton multiple coulomb scattering algorithms in the Monte Carlo codes MCNPX and Geant4 to well-established scattering theories. We focus only on beam energies associated with proton imaging. Despite slight discrepancies between scattering algorithms, both codes appear to be capable of providing useful particle-tracking information for applications such as the proton range telescope.
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