Product to tailor distributions of energy deposition by a high energy photon beam

摘要

A product tailors energy deposition. In one form, the product includes a magnetic field. The magnetic field is in a pre-set tailoring relationship with a body, a target volume in the body, and a electron-photon cascade in the body produced by a photon beam, where the photon beam and the electron-photon cascade are substantially parallel to a beam path. In one form, the magnetic field has a component non-parallel to the beam path in the target volume, which is at least one hundred gauss. The target volume having a target density and the body having a body density proximal the target volume. In one form, the tailoring relationship causes a desired distribution of energy deposited in the body and the target volume.