IMRT patient QA

Test IMRT plan delivery versus TPS calculation in the treatment gantry position:

  • Replace patient 3D model with water phantom and calculate dose distribution per field separately
  • Calculate verification plan using YOUR CLINICAL dose calculation algorithm
  • DICOM export dose plane at dmax as a reference matrix
  • Deliver the IMRT plan normal way while acquiring integrated image for each field
  • Compare calculated versus acquired dose matrices using Epiqa

Example of some evaluation tools

  • Profiles comparison
  • Point evaluation – dose difference, gamma
  • Results histogram and statistics
  • Flexible definition of local or global gamma criteria
  • Results can be printed in a protocol

See Epiqa user experience on: A typical EPIQA example

Last update on 27. June 2011