Focused very high-energy electron beams as a novel radiotherapy modality for producing high-dose volumetric elements

Sci Rep. 2019 Jul 25;9(1):10837. doi: 10.1038/s41598-019-46630-w.

Abstract

The increased inertia of very high-energy electrons (VHEEs) due to relativistic effects reduces scattering and enables irradiation of deep-seated tumours. However, entrance and exit doses are high for collimated or diverging beams. Here, we perform a study based on Monte Carlo simulations of focused VHEE beams in a water phantom, showing that dose can be concentrated into a small, well-defined volumetric element, which can be shaped or scanned to treat deep-seated tumours. The dose to surrounding tissue is distributed over a larger volume, which reduces peak surface and exit doses for a single beam by more than one order of magnitude compared with a collimated beam.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer Simulation*
  • Electrons
  • Monte Carlo Method
  • Radiotherapy / methods*
  • Radiotherapy Dosage*