Dosimetry for new radiation therapy approaches using high energy electron accelerators

Karolina Kokurewicz, Andreas Schüller, Enrico Brunetti, Anna Subiel, Rafael Kranzer, Thomas Hackel, Markus Meier, Ralf-Peter Kapsch, Dino A. Jaroszynski

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Abstract

We have performed dosimetry studies using electron beams with energies up to 50 MeV, which exceed current clinical energy ranges and approaches the bottom end of the very high energy electron (VHEE) range. 50 MeV electron beams can reach deep-seated tumours. In contrast to photon beams, electron beams can be generated with ultra-high dose rates by linear accelerators, which could enable FLASH radiotherapy of deep-seated tumours. The response of radiochromic film and alanine is compared with dose measurements using an ionisation chamber. Energy dependence is not observed within the measurement uncertainty in the investigated energy range from 15 MeV to 50 MeV.
Original languageEnglish
Article number568302
Number of pages12
JournalFrontiers in Physics
Volume8
DOIs
Publication statusPublished - 13 Nov 2020

Keywords

  • radiochromic films
  • dosimetry
  • very high energy electrons
  • VHEE radiotherapy
  • dose-rate
  • independent detectors
  • alanine dosimetry
  • ionization chamber
  • ion recombination correction

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