Cone beam CT (CBCT) in radiotherapy: Assessment of doses using a pragmatic setup in an international setting.

Introduction: The imaging modality kV CBCT on linear accelerators (linacs) is utilised to verify positioning and anatomy in cancer patients undergoing radiotherapy treatment. There is a need for optimisation of radiological protection in kV CBCT imaging protocols to avoid unnecessarily high exposures to normal tissues surrounding the target.

Methods: A network of ICRP mentees from 23 countries were surveyed for available dosimetry equipment.