Patent Document ID: 20020128807
Application ID: 09904889
Patent Status: 0

Claim One:
1. A radiation treatment system comprising: simulation means ( 5, 6, 7 ) for executing radiation treatment simulation for dividing a radiation exposure region ( 3 ) and a peripheral region thereof to be irradiated with particle beams into a plurality of unit radiation exposure regions, and then applying particle beams according to a shape of each divided unit radiation exposure region; and radiation treatment planning means ( 4 ) for obtaining a radiation treatment condition for causing flatness, which is a degree of uniformly irradiating the radiation exposure region with a proper dose of particle beams, to be in a desired range, and a dose of particle beams applied to the unit radiation exposure region of the peripheral region to be minimized, in the case where the simulation means executes the radiation treatment simulation, and then making a radiation treatment plan reflecting the radiation treatment condition.