The Level II onsite audit is a diagnostic test of the Treatment Planning System performance and determines dose within a simple phantom geometry. This is an audit of the beam models within a treatment planning system and is measured using a 2D ion chamber array. The phantom CT is supplied to the facility for treatment planning and delivery.


Woman working with a medical instrument in clinical setting

Figure 1: The 2D array on solid water

The Level II audit includes a number of modalities:

  • 3DCRT
  • IMRT
  • VMAT

Datasets for download (last updated October 2022)

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ACDS audit Level II documentation

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