What is proton beam therapy?

Updated: Nov 29, 2018
  • Author: Isamettin Andrew Aral, MD, MS; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

Answer

In contrast to photon beam therapy, the entrance radiation dose in proton beam therapy tends to be significantly less than the maximum energy of the clinical beam. Proton beams have a characteristic Bragg peak. Beyond this point, where energy is at a maximum intensity level, radiation energy rapidly falls off, which is important in the management of normal tissue toxicity.


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