Scintillator characterization at energies relevant for a prompt gamma detection system in particle therapy

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributed

Contributors

Abstract

The proton therapy in oncology requires instantaneous and reliable particle range verification, which can be achieved using prompt gamma emissions. The characteristic requirements of prompt gamma detection include the energy range of up to several MeV, increased background due to secondary emissions and high counting rates. Different concepts make use of the prompt gamma emissions for verification of dose deposition location, e.g. collimated systems or Compton cameras. Additionally to prompt gamma imaging, the prompt gamma timing method has been proposed, utilizing the proton transit time inside the body. Those approaches imply different needs on energy-, spatial- or timing-resolution of the detection system. Various scintillator materials with multiple shapes have been characterized with respect to those requirements using classical photomultiplier tubes (PMT) and different experimental setups and locations. The light output, non-linearity and energy resolution were measured using gamma sources. The timing was characterized at the ELBE facility at Helmholtz-Zentrum Dresden-Rossendorf (HZDR), using the bremsstrahlung beam with photons up to 12.5 MeV. Measurements at the 3 MV Tandetron accelerator at HZDR provided information of the energy resolution at therapy relevant energies of 4.4 MeV.

Details

Original languageGerman
Title of host publication2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
PublisherIEEE Computational Intelligence Society (CIS)
Pages1-2
Number of pages2
ISBN (print)978-1-4799-6097-2
Publication statusPublished - 15 Nov 2014
Peer-reviewedNo

Publication series

SeriesIEEE Symposium on Nuclear Science (NSS/MIC)
ISSN1082-3654

Conference

Title2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
Duration8 - 15 November 2014
LocationSeattle, WA, USA

External IDs

ORCID /0000-0001-9023-3606/work/142252754
Scopus 84965050398

Keywords

Keywords

  • Timing, Protons, Energy resolution, Medical treatment, Energy measurement, Crystals, Cameras