Fig. 5: Schematic setup of the dose measurement during mice irradiation.
From: Preclinical tumor control with a laser-accelerated high-energy electron radiotherapy prototype

a, for the VHEE radiation experiment, the EBT3 film was attached to the back side of the collimator by tapes. b, for the X-ray irradiation experiment, the EBT3 films were attached beneath the 1-cm-thick bolus. In both cases, the mice were placed very close to the EBT3 films with their skin almost touching the films.