ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,630, issued on June 3, was assigned to HITACHI LTD. (Tokyo).
"Treatment planning system, treatment plan creation method, and computer program" was invented by Takuto Miyoshi (Tokyo), Shinichirou Fujitaka (Tokyo) and Taisuke Takayanagi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A correlation between a CT value and a water equivalent thickness ratio distribution for each patient can be corrected without increasing a treatment time, and more accurate treatment can be realized. A treatment planning system 112 which generates a treatment plan for irradiating an irradiation target with a particle beam calculates a correction amount of a water eq...