title: Surface ionization ratios for electrons in the energy range 3-11 MeV and the implications for treatment of superficial lesions.
mesh_terms: D004583:Electrons; D006801:Humans; D007477:Ions; D008961:Models, Structural; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy
chemical_list: D007477:Ions