Mitsubishi Denki Kabushiki Kaisha

Miz Company Limited

Incorporated Medical Institution Yukokai

Yukimasa Aoki

Kiyoshi Yoda

Ryosuke Kurokawa

Shinichi Hirano

Bunpei Sato

The present application provides a radiation damage protecting agent comprising hydrogen gas as an active ingredient at a concentration of 18.5% by volume or less, for treating or alleviating, in a hyperbaric capsule under a pressure higher than standard atmospheric pressure, radiation damage in a human patient who has been exposed to radiation or who has received or receives radiotherapy, and a hyperbaric capsule for administering a hydrogen gas-containing therapeutic agent such as the radiation damage protecting agent to a patient including a human.

Radiation damage protective agent

A control apparatus for a radiotherapy irradiation system in which a calculation time required for calculation to be performed after restrictions are modified is shortened. The control apparatus includes a unit for setting an initial solution indicating an initial irradiated beam weight, a unit for inputting restrictions according to a prescription, and a unit for setting an evaluation function under the restrictions. The control apparatus further includes a unit for iteratively calculating the evaluation function until the evaluation function is minimized and determining an irradiated beam weight optimizing irradiation, and unit for outputting an optimal solution indicating an optimal irradiated beam weight to the irradiation system. After restrictions are modified, a new evaluation function is set under the modified restrictions. An irradiated beam weight is then determined for optimizing irradiation. At this time, the initial solution setting unit adopts the previous optimal solution indicating an optimal irradiated beam weight, which is obtained before the restrictions are modified, as the initial solution indicating the initial irradiated beam weight.

Control apparatus for controlling radiotherapy irradiation system

Growing community of inventors

Tokyo, Japan

Yukimasa Aoki