Patent ID: 8050384

Claim:
An apparatus for performing radiation therapy on a selected region of a tissue in proximity to said apparatus, said apparatus comprising: a scanning electron beam device that scans an electron beam over an at least one anode target in a predetermined pattern generating a plurality of diverging beams of radiation with an energy in a range from 20 to 600vKp; a means for disposing said plurality of diverging beams from a plurality of positions so as said plurality of diverging beams overlap in increasing amounts as said plurality of diverging beams pass through the tissue, whereby an amount of radiation delivered to the selected region of said tissue is equal to or greater than a dose delivered to said tissue through which said plurality of diverging beams travel to reach the selected region; and a means for creating a treatment plan wherein said treatment plan comprises at least said amount of radiation delivered to said region and a location of said region, wherein said treatment plan means at least in part communicate said treatment plan to the generating means, to the disposing means, or to both.