Proton beam therapy image-guided radiotherapy training for RTTs – Experience from a single institution

This study investigates whether an Image-Guided Radiation Therapy (IGRT) workbook and Cone Beam Computed Tomography (CBCT) case studies enhances Radiation Therapists' (RTTs) confidence analysing Proton Beam Therapy (PBT) CBCTs. An 11-participant questionnaire-based study was conducted to assess pre- and post-training confidence. Prior to training, RTTs exhibited higher confidence in photon CBCT decision-making over proton CBCT, highlighting the need for PBT-specific IGRT training, irrespective of prior photon experience. After completing the PBT IGRT workbook and case studies, RTTs experienced increased confidence in analysing PBT CBCTs. The workbook was particularly beneficial for junior RTTs, while experienced staff desired clearer guidance and real-life scenarios. The results show the IGRT workbook and CBCT case studies enhance RTTs' confidence in PBT CBCT analysis. PBT departments should consider these results for RTT led IGRT. Future work could involve adjusting training to account for participants' prior IGRT experience and conducting larger-scale studies to validate our results.