QC tests for radiotherapy CT scanners

• All usual diagnostic CT tests

• Additional focus on particular requirements for RT scanning:

  • distance accuracy (x, y, z)
  • couch movement accuracy
  • couch alignment
  • laser alignment
  • CT number accuracy

• Comprehensive list of tests in AAPM guidelines (Report of AAPM Task Group No. 66)

  • Med Phys 30 (10), Oct 2003 pp 2762 -2792
  • includes frequency & tolerance levels