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How much momentum acceptance is required to track breathing variability in NSCLC patients?
(2022)Purpose Fast energy change within beamline momentum acceptance is investigated as an option to track organ motion in pencil beam scanning proton therapy. Although prior knowledge of the patient’s organ motion can be used to optimize scan paths that minimize acceptance requirements, allowance has to be made to account for breathing variability. We investigate how much variation in beam momentum (dp/p) is required to track lung tumors under ...Conference Poster -
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