The use of electron beams in radiation therapy has been limited to superficial lesions treatment due to electrons short range at the clinically available energies. Research and investigation have indicated the potential to use high energy electrons in the range of 70-250 MeV for radiotherapy. These beams are characterised by a penetrating ability comparable to clinical photon beams, reduced scattering in air and tissue, and absence of electronic disequilibrium at interfaces with varying densities which favours a more uniform dose distribution throughout the target. These physical characteristics contribute to enhance the ratio of target dose to dose to healthy tissue. Additionally, electrons radiation therapy could be delivered using pencil beam electromagnetic scanning techniques, opening the possibility of a very fast irradiation. This project includes computational simulations of dosimetric quantities using Gate/Geant4 Monte Carlo code to investigate electron beams.
