title: Electron beam instability and isodose asymmetry associated with a 35 Mev medical betatron.
mesh_terms: D004583:Electrons; D004735:Energy Transfer; D006801:Humans; D011834:Radiation Monitoring / Q000295:instrumentation; D011879:Radiotherapy Dosage / Q000295:instrumentation*; D011882:Radiotherapy, High-Energy