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Medical physics

Can a commercial EPID dosimetry system detect radiotherapy treatment errors?

10 Sep 2021 Sponsored by Sun Nuclear Corporation

Join the audience for a live webinar at 3 p.m. BST on 19 October 2021 exploring methods used to test the sensitivity of PerFRACTION to radiotherapy errors originating from three possible sources

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Electronic portal imaging dosimetry offers one of the best methods to capture radiotherapy treatment errors on a day-to-day basis, because it is non-interventional, readily available and delivers no extra dose to the patient. But how sensitive is it to the variety of errors that can arise?

In this webinar we detail the methods used to test the sensitivity of PerFRACTION (part of the SunCHECK Platform from Sun Nuclear Corporation) to radiotherapy errors originating from three possible sources:

  • Changes in the radiation beam or EPID position;
  • Changes in the patient position; and
  • Changes in the patient anatomy.

Tests are made on anthropomorphic phantoms, for both 3DCRT and VMAT beams.

The speaker, Paul Doolan, has published a paper on this topic in Biomedical Physics & Engineering Express.

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Dr Paul Doolan is the General Co-ordinator of Medical Physics at the German Oncology Center, Limassol. After working as a Medical Physicist in the National Health Service in the UK, he completed a PhD in Medical Physics at University College London. He spent a year-long sabbatical at Massachusetts General Hospital and Harvard Medical School, gaining clinical experience in Proton Therapy and performing proton physics research. The key paper from his PhD research, published in Physics in Medicine & Biology, was featured on medicalphysicsweb, was one of the journal’s top 10 downloads in 2015, and has more than 60 citations to date. He has also published his work in Medical Physics, has presented at AAPM, PTCOG and ESTRO meetings, and has a h-index of 8. After his research experiences he returned to the clinic at University College London Hospital and became state registered as a Clinical Scientist. He joined the German Oncology Center at the start of its operation in 2017 and assumed responsibility of the Medical Physics Department as the General Co-ordinator in 2020. He is currently acting as the Secretary of the IPEM Working Party on Online Monitoring of Radiotherapy Treatments and is an Editor for the IPEM SCOPE journal.

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