BEAM MODULATION APPARATUS ON BUILD-UP REGION OF PHOTON BEAM BY TRANSVERSE MAGNETIC FIELD AND BEAM SPOILER RADIOTHERAPY APPARATUS USING THE DEPTH DOSE MODULATION APPARATUS AND METHOD FOR MODULATING DOSE TRANSVERSE MAGNETIC FIELD AND BEAM SPOILER ON BUILD-UP REGION OF PHOTON BEAM

摘要

The present invention relates to a device for modulating a dose escalation region of a photon beam using a magnetic field and a scatterer, a phototherapy beam-based radiation treatment apparatus including the same, and a method for modulating a dose region of a photon beam using a magnetic field and a scatterer. An apparatus for increasing dose area modulation according to an embodiment of the present invention includes: a magnetic field providing unit disposed outside the body on a path where a photon beam moves to a radiation treatment target site and providing a magnetic field perpendicular to the direction of photon beam movement; And a magnetic field strength adjusting unit for adjusting the magnetic field strength of the magnetic field providing unit, wherein the magnetic field providing unit disperses secondary electrons below a specific energy level. According to the present invention, it provides a dose-raising effect to the tumor tissue present at a certain depth from the skin surface, and provides a dose-reducing effect to the skin surface.