<prompt> Electron Beam Radiotherapy is used in treatment of?Deep Seated Brain TumorsSkull Base ChordomasMycosis FungoidesLung Cancer  <response>: Electron Beam Radiotherapy MC used for Intraopeive Used for Superficial Cancers like Mycosis Fungoides. Tumours of Eyelids lips Skull Base ChordomasDeep Seated Brain Tumors are usually treated by Proton Beam Radiotherapy 