A phantom apparatus for measuring of radiation dose in volumetric modulated arc therapy, and therefor a method analysing for error of radiation dose

摘要

in accordance with the present invention arcuate volume-based conformal IMRT dose verification of the schedule for the phantom device the size of the radius of the cylindrical central portion being constituted hollow external cylinder and a mounting plate attached to one side of the outer cylinder for fixing a cylindrical shell (shell); Have had a radius size and dimension of at least a predetermined length than the outer cylinder of the constant radius, the first inner cylinder to be inserted into the hollow outer cylinder of the cylindrical shell for the fixing; And the outer cylinder and have had the same radius, is provided with a cutting inside the hemisphere by the projection part to be combined with the protruding portion of the first inner cylinder inserted into the cylindrical shell for the fixed and the first inner cylinder by attaching the film for the measurement of the radiation dose to the outer surface of which is characterized by measuring the radiation dose. ;