PARTICLE THERAPY

• US 20090114847A1
• Filed: 11/09/2006
• Published: 05/07/2009
• Est. Priority Date: 11/11/2005
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hermann, Klaus, Grozinger, Sven Oliver, Rietzel, Elke, Sommer, Andres, Zeuner, Torsten
• Application Number:
  US12/092,695
• Publication Number:
  US 20090114847A1
• Time in Patent Office: Days
• US Class Current: 250/492.100
• CPC Class Codes: A61N 2005/1061 using an x-ray imaging system having a separate imaging source
• CPC Class Codes: A61N 2005/1063 maintaining the position when the patient is moved from an imaging to a therapy system
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 5/103 Treatment planning systems
• CPC Class Codes: A61N 5/1043 Scanning the radiation beam, e.g. spot scanning or raster scanning
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1065 Beam adjustment
• CPC Class Codes: A61N 5/1069 Target adjustment, e.g. moving the patient support
• CPC Class Codes: A61N 5/1078 Fixed beam systems

Abstract

The invention relates to a treatment room for a particle therapy system that has a treatment room isocenter, which can be set variably during treatment and forms an origin of a coordinate system, and a patient positioning apparatus for automatically positioning the patient with reference to the set treatment room isocenter.

Claims

1. A treatment room in a particle therapy system, the treatment room comprising:

a treatment room isocenter for irradiation, which can be set variably during treatments and forms an origin of a coordinate system, and

a patient positioning device for automatically positioning the patient with reference to the set treatment room isocenter.

2. The treatment room as claimed in claim 1, further comprising a beam exit of a beam guiding and accelerating system from which a particle beam emerges to interact with a patient positioned in an irradiation position, the irradiation position being given by the position of the set treatment room isocenter for irradiation.

3. The treatment room as claimed in claim 1, characterized in that a distance of the treatment room isocenter for irradiation can be set relative to the beam exit as a function of the particle, such as protons, carbon ions or oxygen ions.

4. The treatment room as claimed in claim 1, characterized in that the variable treatment room isocenter can be set variably on a beam central axis of a particle beam running in the treatment room.

5. The treatment room as claimed in claim 1, characterized in that at least one beam parameter such as a beam width, a beam profile, a falling edge of the beam profile, or a combination thereof, can be set for an irradiation procedure by selecting the position of the variable treatment room isocenter on the beam central axis.

6. The treatment room as claimed in claim 1, characterized in that at least one parameter characterizing the particle beam, such as beam focus, beam divergence, beam diameter in the treatment room can be set.

7. The treatment room as claimed in claim 1, characterized in that the patient positioning apparatus comprises a robotically driven patient table that can be driven by a therapy control unit of the particle therapy system in order to move the patient from an imaging position to an irradiation position.

8. The treatment room as claimed in one claim 1, characterized in that a controllable laser marks the set position of the variable treatment room isocenter in the treatment room.

9. The treatment room as claimed in claim 1, further comprising:

an imaging device for verifying the position of the volume to be irradiated with reference to the particle beams is the imaging device is operable to verify the position of the volume to be irradiated in an imaging position of the patient, the imaging position being given by the position of the set treatment room isocenter and being arranged at a distance from the irradiation position in space.

10. The treatment room as claimed in claim 9, characterized in that the imaging position can be assigned an imaging center that is arranged on the beam central axis.

11. The treatment room as claimed claim 9, characterized in that the imaging apparatus is operable for 3D imaging.

12. The treatment room as claimed in claim 9, characterized in that a space that is available for the imaging unit can be set by setting the variable treatment room isocenter on the beam central axis.

13. The treatment room as claimed claim 9, characterized in that the imaging device has dimensions that define a minimum spacing from the beam exit, and that the imaging device is arranged at least at this minimum spacing from the beam exit, the minimum spacing being greater than the distance between the beam exit and irradiation isocenter.

14. The treatment room as claimed in claim 9, characterized in that the imaging device is a C arc X-ray machine or an imaging robot that, for the purpose of 3D imaging, is designed to rotate about the imaging position, about the imaging center, and that a minimum spacing from the beam exit is determined by the rotatability, and the imaging device is arranged at least at this minimum spacing from the beam exit.

15. The treatment room as claimed in claim 1, further comprising a therapy plan for irradiating the patient, the therapy plan including

at least two procedures for irradiating and/or imaging with identical and/or different therapy plan isocenters, the at least two procedures being assigned to at least two spatially different treatment room isocenters.

16. A method for drawing up a therapy plan, the method comprising:

determining a radiation dose distribution for an irradiation procedure using a database in which characteristic beam parameters for various treatment room isocenters are stored as a function of the spacing of the treatment room isocenter from a beam exit or beam focus.

17. The method as claimed in claim 16, wherein treatment room isocenters are assigned in a therapy plan to irradiation procedures from different irradiation directions and/or with different types of particle.

18. The method as claimed in claim 16, wherein the irradiation procedure is planned for a particle irradiation that uses a scanning technique, such as a raster scanning technique.

19. An irradiation method for irradiating a volume of a patient that is to be irradiated with high energy particles of a therapy system having at least two procedures for irradiating and/or imaging identical or different therapy plan isocenters in a treatment room, wherein the therapy plan isocenters of at least two of the procedures are assigned spatially different treatment room isocenters, the treatment room isocenter is reset between procedures that are assigned spatially different treatment room isocenters, and the patient is respectively positioned for carrying out the procedures in such a way that the respectively planned therapy plan isocenters and the respectively set treatment room isocenter are matched.

20. The irradiation method as claimed in claim 19, wherein various treatment room isocenters are assigned to irradiation procedures from different irradiation directions and/or with different types of particle.

21. The irradiation method as claimed in claim 19, wherein at least one position changing operation the patient'"'"'s position is changed between two spatially different treatment room isocenters by driving a patient positioning unit, in particular in which the patient is moved in or against the irradiation direction in order to change the position of the position changing operation.

22. A particle therapy system having a treatment room, the treatment room including:

a treatment room isocenter for irradiation, which can be set variably during treatment, and forms an origin of a coordinate system, and

a patient positioning device for automatically positioning the patient with reference to the set treatment room isocenter.