Device for controlling radiation therapy device, radiation therapy system, method for controlling radiation therapy device, and program

• US 9,974,981 B2
• Filed: 10/08/2013
• Issued: 05/22/2018
• Est. Priority Date: 10/08/2013
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Takahashi, Kunio
• Primary Examiner(s): Matthews, Christine H
• Assistant Examiner(s): Lannu, Joshua D
• Application Number:
  US14/906,794
• Publication Number:
  US 20160166858A1
• Time in Patent Office: 1,687 Days
• CPC Class Codes: A61N 5/1048 Monitoring, verifying, controlling systems and methods
• CPC Class Codes: A61N 5/1081 Rotating beam systems with a specific mechanical construction, e.g. gantries
• CPC Class Codes: A61N 5/1082 having multiple beam rotation axes

Abstract

This device for controlling a radiation treatment device is provided with a gantry for supporting a radiation emitting device so as to enable rotation thereof about a first axis, and a ring for supporting the gantry so as to enable rotation thereof about a second axis intersecting with the first axis, the device for controlling a radiation treatment device being provided with a movement path information storage unit for storing movement path information set in the radiation emitting device, and a control unit for providing a limit to the rotation speed of the gantry and the rotation speed of the ring while maintaining the ratio of the rotation speed of the gantry and the rotation speed of the ring indicated by the movement path information, on the basis of the rotation angle of the gantry and the rotation angle of the ring.

Claims

1. A device for controlling a radiation therapy device, the radiation therapy device including both a gantry by which an irradiation device is supported to be able to rotate around a first axial line, and a ring by which the gantry is supported in such a way as to be able to rotate around a second axial line intersecting with the first axial line, the device comprising:

a movement path information storage unit configured to store information regarding a movement path set for the irradiation device; and

a control unit configured to set a limitation to rotational speeds of the gantry and the ring while maintaining a ratio between rotational speeds of the gantry and the ring, which is indicated by the information regarding the movement path, based on rotational angles of the gantry and the ring.

2. The device for controlling a radiation therapy device according to claim 1, further comprising:

a speed limitation map storage unit configured to store a speed limitation map illustrating a relationship between the rotational angles of the gantry and the ring and a limitation to the rotational speeds of the gantry and the ring,

wherein the control unit sets a limitation to the rotational speeds of the gantry and the ring based on the speed limitation map.

3. The device for controlling a radiation therapy device according to claim 1, further comprising:

an operation input unit configured to receive an operation input giving an instruction for a movement speed of the irradiation device,

wherein the control unit sets a limitation to the rotational speeds of the gantry and the ring while maintaining the ratio between the rotational speeds of the gantry and the ring, which is indicated by the information regarding the movement path, based on the operation input and the rotational angles of the gantry and the ring.

4. A radiation therapy system comprising:

a gantry by which an irradiation device is supported to be able to rotate around a first axial line;

a ring by which the gantry is supported to be able to rotate around a second axial line intersecting with the first axial line;

a movement path information storage unit configured to store information regarding a movement path set for the irradiation device; and

a control unit configured to set a limitation to rotational speeds of the gantry and the ring while maintaining a ratio between a rotational speed of the gantry and the ring, which is indicated by the information regarding the movement path, based on rotational angles of the gantry and the ring.

5. A method for controlling a radiation therapy device via a device which includes a movement path information storage unit storing information regarding a movement path set for an irradiation device, the radiation therapy device including both a gantry by which the irradiation device is supported to be able to rotate around a first axial line, and a ring by which the gantry is supported to be able to rotate around a second axial line intersecting with the first axial line, the method comprising:

a control operation of setting a limitation to rotational speeds of the gantry and the ring while maintaining a ratio between the rotational speeds of the gantry and the ring, which is indicated by the information regarding the movement path, based on the rotational speeds of the gantry and the ring.

6. A non-transitory, computer-readable medium embodying a program causing a computer of a device to control a radiation therapy device, the radiation therapy device including both a gantry by which an irradiation device is supported to be able to rotate around a first axial line, and a ring by which the gantry is supported to be able to rotate around a second axial line intersecting with the first axial line, the device including a movement path information storage unit configured to store information regarding a movement path set for the irradiation device, the program causing the device to execute:

a control step of operation of setting a limitation to rotational speeds of the gantry and the ring while maintaining a ratio between the rotational speeds of the gantry and the ring, which is indicated by the information regarding the movement path, based on rotational angles of the gantry and the ring.