Hitachi, Ltd.

Hokkaido University

Rintarou Fujimoto

Yusuke Vincent Fujii

Kikuo Umegaki

Masahiro Yoshida

Hiroki Shirato

Taeko Matsuura

Shinichi Shimizu

Keiji Kobashi

Shusuke Hirayama

Masumi Umezawa

Toru Umekawa

Taisuke Takayanagi

Shinichiro Fujitaka

Takuya Nomura

Yuka Matsuzaki

Hidenori Koyano

Yuusuke Fujii

Masahiro Mizuta

Hiroyuki Date

A proton beam therapy systemincludes an irradiation nozzlefor irradiating a targetA with a particle beam, a proton beam irradiation control systemthat controls the irradiation nozzle, a dose monitorB that measures an irradiation amount of the particle beam emitted to the targetA, a position monitorA that measures a position of the particle beam emitted to the targetA, and a dose distribution evaluation system during irradiationthat calculates a dose distribution of the particle beam emitted to the targetA during irradiation. This system supports a medical staff to quickly and appropriately make an intervention determination for treatment such as discontinuation of particle therapy, a change in conditions thereof, or the like in the process of particle irradiation.

Particle therapy system, dose distribution evaluation system, and method for operating particle therapy system

A treatment planning apparatusor a clinical decision support apparatuscalculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatusesandor outputs the same to an outside of the apparatusesand. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.

Radiation irradiation planning apparatus, clinical decision support apparatus and program

There is provided a treatment planning system and a particle therapy system. In the related art, it is unable to determine optimum beam intensity in irradiation for which discrete spot irradiation and continuous beam irradiation coexist. There is provided a treatment planning system that includes a spot determination unit that divides an irradiation region to be irradiated with a charged particle beam into a plurality of layers in an advancing direction of the charged particle beam and disposes a plurality of irradiation spots, which becomes irradiation points of the charged particle beam, in the layers and a beam intensity determination unit that determines beam intensity for each of the layers by evaluating the irradiation time by changing the beam intensity in a range of a condition of change in dose distribution which is set in advance.

Treatment planning system and particle therapy system

A function/process of recording marker position data and spot data is provided. The marker position data includes position information of a markermeasured for tumor tracking irradiation and information on time of execution of X-ray imaging. The spot data includes information on time of irradiation of each spot, a delivered irradiation position, and a delivered irradiation amount. The marker position data and the spot data are synchronized based on the time information, and by using the marker position data and the spot data upon spot irradiation, a delivered dose distribution of proton irradiation is calculated. With this configuration, it is possible to take the influence of interplay effect into consideration, and it is possible to support to make more appropriate determination upon replanning of a treatment plan.

Dose evaluation system, planning system, particle irradiation system and dose evaluation method

Growing community of inventors

Tokyo, Japan

Rintarou Fujimoto