Dosimetric IMRT verification for multiple energies with an a-Si EPID

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

Activity: Talk or presentation / LecturePresentation at a scientific conference / workshop


Electronic portal imaging devices (EPIDs) are a convenient tool for geometric as well as dosimetric IMRT verification. However, the use of such devices for dosimetric purposes requires a detailed knowledge of their dosimetric properties. The aim of this paper was to describe a method for acquiring portal dose images (PDIs) with an amorphous silicon (a-Si) EPID and to assess its accuracy. Three IMRT treatment plans in the energy range from 6 to 25 MV were verified on a field-by-field basis. Reference dose distributions were measured using radiographic films as well as a 2D matrix of ionization chambers.
Period10 Apr 200612 Apr 2006
Event titleThe 9th International Workshop on Electronic Portal Imaging
Event typeConference
Degree of RecognitionInternational

Research Field

  • Biosensor Technologies