Institute of Physics Anatomical changes 1 Anatomical modeling 1 Average modeling 1 Compton scattering 1 Computerized tomography 1 FLASH 1 Femtoseconds 1 Forecasting 1 Gamma rays 1 Gamma-rays 1 Head-and-neck cancer 1 High dose 1 High dose rate 1 Hounsfield units 1 Individual modeling 1 Inverse Compton scattering 1 Laser produced plasmas 1 Photons 1 Planning CT 1 Plasma interactions 1 Proton beam therapy 1 Proton beams 1 Proton therapy 1 Statistical tests 1 Time-scales 1 Ultra-high 1 Ultra-high dose-rate 1 Uncertainty evaluation 1 anatomical model 1