A comparative study on the dosimetric characteristics of iViewGT a-Si EPIDs

  • Peter Winkler (Author)
  • Alfred Hefner (Author)
  • Georg Dietmar (Author)

Activity: Talk or presentation / Lecture › Presentation at a scientific conference / workshop

Description

The use of an electronic portal imaging device (EPID) for dosimetric purposes requires knowledge of the detector´s dose-response behavior. The Elekta iViewGT amorphous silicon (a-Si) EPID generally exhibits a nonlinear response to radiation. Variations of EPID sensitivity with dose and dose rate, respectively, up to 10% are reported in literature 1,2. The aim of this study was to investigate the variation of the dosimetric properties of several iViewGT EPIDs and to deduce a minimum number of measurements, which are required for a complete dosimetric characterization of such devices.
Period28 Apr 2006 → 29 Apr 2006
Event title2nd Austrian, Italian, Slovenian and Croatian Medical Physics Meeting
Event typeOther
Degree of RecognitionInternational

Research Field

  • Biosensor Technologies