Patent ID: 8644452

Claim:
An apparatus for performing radiation therapy on a selected region of a tissue in proximity to said apparatus, said apparatus comprising: a radiation source for generating beams of low energy radiation; a positioner for disposing said beams in a precise and controllable manner from a plurality of positions indexed relative to each other in predetermined but variable millimeter or submillimeter increments so as to produce an at least one-dimensional array of said beams that overlap in increasing amounts as said beams pass through said tissue, whereby an amount of radiation delivered at depth in said tissue is equal to or greater than a dose delivered to the tissue through which the beams pass; an attenuator for attenuating each beam of radiation by a variable and predetermined and known amount so as to harden each said beam; and a treatment planner for creating a treatment plan wherein said treatment plan comprises at least said amount of radiation delivered to said depth and a location of said depth, wherein said treatment planner at least in part is configured to communicate said treatment plan to said radiation source and to said positioner.