METHOD FOR OPERATING RADIOACTIVE RAY DISTRIBUTION, RADIOACTIVE RAY DISTRIBUTION PLANNING DEVICE, AND RADIOTHERAPY DEVICE

摘要

PROBLEM TO BE SOLVED: To make very easily obtainable the distribution of the irradiation dose for every time when a part to be treated is irradiated with radioactive rays a plural number of times. ;SOLUTION: This radioactive ray distribution planning device has a memory means 11 and an operation means 12. The memory means 11 is to memorize an absorption coefficient matrix with the absorption coefficient of radioactive rays at plural calculation points set in a part 4 to be treated as a matrix element and a irradiation dose matrix with the irradiation dose at each calculation point as a matrix element. The operation means 12 finds the distribution of the irradiation dose in every direction by multiplying the reverse matrix of the absorption coefficient matrix by the irradiation dose matrix.;COPYRIGHT: (C)1999,JPO