Particle beam therapy system and particle beam therapy method

Patent metadata

Field	Value
Publication number	US-11160994-B2
Application number	US-202016747794-A
Country	US
Kind code	B2
Filing date	Jan 21, 2020
Priority date	Feb 28, 2019
Publication date	Nov 2, 2021
Grant date	Nov 2, 2021

Abstract

The present invention makes it possible to reliably verify irradiation with a particle beam in accordance with a selected irradiation technique. A particle beam therapy system includes a charged particle beam generator accelerating the particle beam, an irradiator irradiating a target with the particle beam accelerated by the charged particle beam generator, and a controller controlling the charged particle beam generator and the irradiator. The controller controls the charged particle beam generator and the irradiator so as to irradiate the target with the particle beam through switching between at least two different irradiation techniques, and furthermore, after switching between the two irradiation techniques, controls the charged particle beam generator and the irradiator to perform tentative irradiation with the charged particle beam in accordance with one of the irradiation techniques switched, to verify the particle beam.

First claim

What is claimed is:

1. A particle beam therapy system comprising:
an accelerator accelerating a particle beam,
an irradiator irradiating a target with the particle beam accelerated by the accelerator, and
a controller controlling the accelerator and the irradiator,
wherein the controller controls the accelerator and the irradiator so as to irradiate the target with the particle beam through switching between at least two different irradiation techniques, and furthermore, after switching between the irradiation techniques, controls the accelerator and the irradiator so as to perform tentative irradiation with the particle beam in accordance with one of the irradiation techniques switched, to verify the particle beam,
wherein an input device is provided, the input device receiving a mode-switching-instructing input for switching to a therapy irradiation mode of irradiating the target with the particle beam and other mode-switching instructing input for switching to a verification irradiation mode for tentative irradiation with the particle beam,
wherein the controller controls the accelerator and the irradiator so as to perform irradiation with the particle beam based on one of the mode-switching-instructing inputs received by the input device,
wherein the irradiator has an irradiation dose measurement device measuring an irradiation dose of the particle beam used for irradiation, and
wherein once starting irradiation with the particle beam in accordance with the verification irradiation mode, the controller does not receive the mode-switching-instructing input for switching to the therapy irradiation mode until a prescribed irradiation dose is measured by the irradiation dose measurement device.

2. The particle beam therapy system according to claim 1 ,
wherein once receiving the other mode-switching-instructing input for switching to the verification irradiation mode, the controller does not receive the mode-switching-instructing input for switching to the therapy irradiation mode until a prescribed irradiation dose is measured by the irradiation dose measurement device.

3. A particle beam therapy system comprising:
an accelerator accelerating a particle beam,
an irradiator irradiating a target with the particle beam accelerated by the accelerator, and
a controller controlling the accelerator and the irradiator,
wherein the controller controls the accelerator and the irradiator so as to irradiate the target with the particle beam through switching between at least two different irradiation techniques, and furthermore, after switching between the irradiation techniques, controls the accelerator and the irradiator so as to perform tentative irradiation with the particle beam in accordance with one of the irradiation techniques switched, to verify the particle beam, wherein
the controller includes an accelerator controller controlling the accelerator, an irradiation controller controlling the irradiator, and a central control unit controlling the accelerator controller and the irradiation controller,
when switching the irradiation techniques, by the central control unit, control data used for the irradiation techniques to be switched is transmitted to the accelerator controller and the irradiation controller,
once receiving the control data from the central control unit, the accelerator controller and the irradiation controller each transmits verification data of the received control data to the central control unit, and
once receiving verification data from each of the accelerator controller and the irradiation controller, the central control unit confirms consistency between the verification data and the control data transmitted to the accelerator controller and the irradiation controller, and prevents irradiation with the particle beam until confirmation of the consistency is completed.

Assignees

• Hitachi Ltd

Inventors

• Ono Daisuke
• Ito Yuki

Classifications

• A61N2005/109

  Neutrons · CPC title

• A61N5/1048 Primary

  Monitoring, verifying, controlling systems and methods · CPC title

• A61N2005/1087

  Ions; Protons · CPC title

• A61N2005/1092

  Details · CPC title

• A61N2005/1074

  Details of the control system, e.g. user interfaces · CPC title