Particle therapy procedure and device for focusing radiation

• US 20070075273A1
• Filed: 09/13/2006
• Published: 04/05/2007
• Est. Priority Date: 09/16/2005
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Birgy, Denis, Breuninger, Harald, Rossler, Lothar, Frankenbach, Peter
• Application Number:
  US11/520,949
• Publication Number:
  US 20070075273A1
• Time in Patent Office: Days
• US Class Current: 250/492.300
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 5/10 X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy A61N5/01 takes precedence
• CPC Class Codes: A61N 5/1079 Sharing a beam by multiple treatment stations

Abstract

A particle therapy system procedure and device for focusing radiation are provided. The particle therapy system comprising an acceleration unit that accelerates particles and a particle beam feed unit that directs particles to at least one radiation treatment location, an accelerator control unit that sets and controls the parameters of the acceleration and particle beam feed unit needed for irradiation, and an assignment unit that assigns and monitors a particle beam along a beam path in the acceleration unit and particle beam feed unit to a radiation treatment location requesting the particle beam.

Claims

1. A particle therapy system comprising:

an acceleration unit;

a particle beam feed unit operable with the acceleration unit, the particle beam feed unit operable to direct particles to at least two radiation treatment locations;

an accelerator control unit that is operable to set and control parameters of the acceleration unit and particle beam feed unit, and

an assignment unit that assigns and monitors a particle beam along a beam path in the acceleration unit and particle beam feed unit to a radiation treatment location requesting the particle beam,

wherein the acceleration unit and particle beam feed unit comprise at least one settable element that adjusts the beam path, and is connected to the accelerator control unit for transfer of at least one settable parameter,

wherein the at least one settable element is connected to a signal output of the assignment unit via a permanently assigned signal connection that receives at least one activation signal, and

wherein the at least one activation signal effects an implementation of the setting parameter in the element.

2. The particle therapy system as claimed in claim 1, wherein the signal connection is a direct hardware connection.

3. The particle therapy system as claimed in claim 1, wherein the acceleration unit and particle beam feed unit comprise a plurality of elements connected via a permanently assigned signal connection, and hardware-encoded to at least one signal output of the assignment unit.

4. The particle therapy system as claimed in claim 1, wherein the at least one settable element is a beam deflection magnet, a beam decoupling device of an accelerator unit, a KO exciter of a synchrotron ring, a deflection magnet downstream from the beam decoupling device, or any combination thereof.

5. The particle therapy system as claimed in claim 1, wherein the at least one settable parameter is a value of a magnetic field, a current value, decoupling frequency, or any combination thereof.

6. The particle therapy system as claimed in claim 1, wherein the at least one settable element is operable to process and implement the at least one settable parameter when at least one activation signal is present.

7. The particle therapy system as claimed in claim 6, wherein the at least one settable element comprises a memory operable to store the at least one setting parameter and operable to read out the at least one settable parameter for implementation after the activation signal is received.

8. The particle therapy system as claimed in claim 1, wherein the accelerator control unit and the at least one settable element are linked to each other, the link operable to transfer the at least one setting parameter to a first data bus system.

9. The particle therapy system as claimed in claim 1, wherein an accelerator control unit and at least one control unit of one of the radiation treatment stations are linked to the first or to a second data bus system, the first or second data bus system operable to exchange parameters of the particle beam, the acceleration unit and particle beam feed unit required for irradiation that are defined on the basis of a treatment plan, or both.

10. The particle therapy system as claimed in claim 1, wherein at least one of the radiation treatment locations comprises a treatment location at which a patient is irradiated with the particles.

11. The particle therapy system as claimed in claim 1, wherein at least one of the radiation treatment locations comprises a checking location operable to check a parameter characterizing a particle irradiation.

12. The particle therapy as claimed in claim 1, wherein the assignment unit comprises a programmable logic controller.

25. The particle therapy system as claimed in claim 1, wherein the signal connection is an individual signal line.

26. The particle therapy system as claimed in claim 3, wherein the at least one element is a beam deflection magnet, a beam decoupling device of an accelerator unit, a KO exciter of a synchrotron ring, a deflection magnet downstream from the beam decoupling device, or any combination thereof.

27. The particle therapy system as claimed in claim 7, wherein the setting parameter is read from the memory for implementation after the activation signal is received.

13. A method for setting a beam path to one of at least two radiation treatment stations of a particle therapy system, wherein the beam path is set in an acceleration unit and a particle beam feed unit using at least one settable element and an assignment unit, the method comprising:

sending at least one setting parameter to the at least one settable element,

sending at least one activation signal via a permanently assigned signal connection of the assignment unit to the at least one settable element, and

implementing the at least one setting parameter in the at least one settable element after the sending of the activation signal.

14. The method as claimed in claim 13, further comprising:

sending a request signal of one of the radiation treatment stations to the assignment unit via the permanently assigned signal connection before setting the beam path that defines the beam path to be set, and

checking an availability of the particle beam and conveying the result to the requesting radiation treatment station if the particle beam is available.

15. The method as claimed in claim 14, further comprising:

transferring parameters of the requested particle beam and of the beam path from a control unit of the radiation treatment station requesting the particle beam to an accelerator control unit that sets and controls the parameters needed for irradiation of the accelerator and particle beam feed unit after the allocation, and

sending the at least one setting parameter from the accelerator control unit to the at least one element.

16. The method as claimed in claim 15, further comprising:

sending a confirmation signal to the requesting radiation treatment station via another permanently assigned signal connection or via a data bus system, to which the control unit and the assignment unit are linked after the allocation.

17. The method as claimed in claim 16, further comprising:

sending the activation signal after the confirmation signal has been confirmed.

18. The method as claimed claim 13, wherein aborting the particle acceleration, forwarding of the particles, or both from the assignment unit, control unit, or both after a confirmation signal has been sent to a radiation treatment station that has not sent a request signal.

19. A method comprising using a permanently assigned signal connection between a settable element that sets a beam path in a particle therapy system and an assignment unit of a particle therapy system that transfers an activation signal.

20. A device for setting a beam path to one of at least two radiation treatment locations of a particle therapy system, wherein the beam path is set in an accelerator and particle beam feed unit of the particle therapy system by at least one adjustable element and an assignment unit that assigns and monitors a correct particle beam guidance, the device comprising:

a means for sending at least one setting parameter to the at least one element,

a means for sending an activation signal via a direct and permanently assigned signal connection of the assignment unit to the at least one element, and

a means for implementing the at least one setting parameter in the at least one element after the activation signal has been sent.

21. The device as claimed in claim 20, further comprising:

a means for receiving a request signal, means for checking an availability of the particle beam and means for allocating the particle beam to the requesting radiation treatment station.

22. The device as claimed in claim 20, further comprising:

a means for transferring parameters of the requested particle beam and of the beam path, from a control unit of the radiation treatment station requesting the particle beam to an accelerator control unit that sets and controls parameters of the accelerator and particle beam feed unit needed for irradiation.

23. The device as claimed in claim 20, further comprising:

a means for sending a confirmation signal to the radiation treatment station, wherein the confirmation signal is sent via a second direct and permanently assigned signal connection or via a data bus system, to which the control unit and the assignment unit are linked.

24. The device as claimed in claim 20, further comprising:

a means for interrupting particle acceleration, forwarding of the particles or both, controlled by the assignment unit, the control unit, or both.