I am Zihang Qiu, a PhD candidate at the University of Amsterdam. After obtaining my Master's degree in Physics at ETH Zürich, I am working on the EU-funded RAPTOR project to realise online treatment adaption for proton radiotherapy. My research focuses on the daily adaption of proton treatment plan to the patient's latest anatomy to minimise the uncertainty caused by the disagreement between the patient's treatment plan and their anatomy, using mathematical optimization and machine learning. I am carrying out my research project under the supervision of Professor Dick den Hertog (the University of Amsterdam) and Professor Thomas Bortfeld (Massachusetts General Hospital).