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Fast energy modulation within the beamline momentum acceptance: a clinical feasibility study
(2021)Conference Poster -
Exploring beamline momentum acceptance of a medical gantry to deliver optimized tumour tracking plans
(2021)Background: Tumour tracking is particularly challenging to realise when it comes to proton therapy. The difficulty of assessing anatomical changes reliably enough to offset the treatment settings on-the-fly, while taking into account the finite range of particles, is beyond the current capabilities of beam delivery and image guidance technologies. Methods: To implement fast range corrections, momentum acceptance (±0.6% dp/p) and global ...Conference Poster -
ITV or tumour tracking for dose painting of NSCLC? A comparison of target coverage and out-of-target dose in proton treatments
(2021)Introduction: Dose-escalation radiotherapy is used to calculate biologically adapted plan. When treating moving tumours the boost on the dose can be lost. We investigated the possibility to use tumour tracking for high precision dose painting in lung cancers. We chose a case where the target motion was below 5mm, normally recruited under free-breathing/rescanning-only protocol. We performed a comparative 4D dose calculation (4DDC) analysis ...Conference Poster -
New Gantry Beam Optics Solution for Minimising Treatment Time in Cyclotron-based Proton Therapy Facilities
(2021)Treatment delivery time in proton therapy depends on beam-on time and the time required to change energy layers and/or lateral position. For cyclotron-based facilities, low energy beams (100-70 MeV) are inefficiently transported through beamlines due to their large emittance after the degrader (~400 pi*mm*mrad 2-sigma emittance), whereas the beamline and Gantry can only transport small emittances (e.g. 30 pi*mm*mrad for PSI Gantry 2) ...Conference Poster