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The Role of the Radiation Therapist in Implementing Dynamic IMRT at the Vancouver Centre

The Role of the Radiation Therapist in Implementing Dynamic IMRT at the Vancouver Centre. by Margaret Welsh, RTT Alison Mitchell, RTT. Objective. To discuss the role of the radiation therapist in a multi-disciplinary team implementing dynamic IMRT. Outline.

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The Role of the Radiation Therapist in Implementing Dynamic IMRT at the Vancouver Centre

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  1. The Role of the Radiation Therapist in Implementing Dynamic IMRT at the Vancouver Centre by Margaret Welsh, RTT Alison Mitchell, RTT

  2. Objective To discuss the role of the radiation therapist in a multi-disciplinary team implementing dynamic IMRT.

  3. Outline • Vancouver Centre Clinical Implementation Team • Role of the RT: Planning Module Functions • Role of the RT: Treatment Module Functions • Verification • Education and Training • Conclusion

  4. Vancouver Centre Clinical Implementation Team • Radiation Therapists: • Margaret Welsh, Tim Deegan, Alison Mitchell, Rosie Vellani, Christine Alexander, Carol Marlowe • Lead Physicist: • Emily Vollans • Radiation Oncologist: • Jon Wu

  5. Planning Module

  6. Immobilisation • BCCA IMRT Protocol requires 3.2mm aquaplast • MED-TEC S system • Reproducibility study

  7. CT Simulation • BCCA IMRT Protocol defines the scanning protocol • VC Protocol modifications • CT Protocol documented and available in CTSim suite for RT’s

  8. Treatment Planning • Two RT’s trained in use of Helios • Helped to generate test plans • Investigation of impact of potential isocentre movement

  9. Treatment Planning(cont) • RT’s generate conventional plans • Procedural development and documentation

  10. QA of Treatment Plan • Procedure developed to enter Physics QA into VARiS • Trained the Physicists in the use of VARiS at the Linac

  11. Treatment Module

  12. Testing on the Linac • Selection from ‘Queue’ • VARiS loads • Deliver radiation • Interleaf gap

  13. Testing on the Linac • Interlocks • Partial treatments

  14. Determining the Treatment Delivery Process • Light field and collision checks • Patient positioning • Treatment delivery • Treatment sheet

  15. Verification

  16. Verification • Sim-on-plan • Daily confirmation of patient positioning • EPI protocol

  17. Education and Training • Documentation of all procedures • Physicists to use VARiS -QA • Multi-disciplinary in-services • In the treatment room - RT’s • Developed an orientation program • Nurses in RT Program

  18. The IMRT Process and RT Involvement

  19. Conclusion Radiation therapists played a very important integral part in implementing IMRT at the Vancouver Centre It couldn’t have been done without us!

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