Method for creating a therapy plan

• US 8,253,121 B2
• Filed: 05/06/2010
• Issued: 08/28/2012
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Varian Medical Systems Particle Therapy GmbH & Company KG (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Gnutzmann, Tobias, Use, Tim
• Primary Examiner(s): Souw, Bernard E
• Application Number:
  US12/775,152
• Publication Number:
  US 20100288945A1
• Time in Patent Office: 845 Days
• Field of Search: 250/492.1, 250/492, 250/21, 250/492.22, 250/492.23, 250/492.3, 250/503.1, 378/18, 378/156, 378/159
• US Class Current: 250/503.1
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 2005/1095 Elements inserted into the radiation path within the system, e.g. filters or wedges
• CPC Class Codes: A61N 5/103 Treatment planning systems
• CPC Class Codes: G21K 1/10 Scattering devices; Absorbing devices; Ionising radiation filters

Abstract

A method for creating a therapy plan for a particle therapy, in which a filter is used to adjust the depth of penetration of the particle beam and an immobilization device is used to immobilize a body region of a patient to be treated, includes adjusting the geometry of a deformable mass of a filter to the geometry of the immobilization device. The deformable filter mass is applied, at least partially, to the immobilization device. A planning data record is obtained with recordings of the filter, so that the properties of the filter are determined on the basis of the recordings and are used in the therapy plan.

Claims

1. A method for creating a therapy plan for a particle therapy, the method comprising:

adjusting the geometry of a deformable filter mass of a filter to the geometry of an immobilization device;

applying, at least partially, the deformable filter mass to the immobilization device;

obtaining a planning data record with a recording of the filter; and

determining properties of the filter to be used for the therapy plan using the planning data record,

wherein the filter is used to adjust the depth of penetration of a particle beam, and

wherein the immobilization device is used to immobilize a body region of a patient to be treated.

2. The method as claimed in claim 1, wherein determining properties of the filter comprises:

taking account of the thickness distribution, the homogeneity, or the thickness distribution and the homogeneity of the deformable filter mass.

3. The method as claimed in claim 1, wherein the immobilization device is an immobilization mask.

4. The method as claimed in claim 1, wherein a cover is applied to a surface of the deformable filter mass.

5. The method as claimed in claim 1, further comprising:

obtaining a first planning data record with recordings of the body region to be treated, which is immobilized using the immobilization device;

obtaining a second planning data record with recordings of the immobilization device with the filter; and

balancing the first planning data record with the second planning data record in order to optimize the therapy plan.

6. The method as claimed in claim 1, wherein the planning data record is a shared planning data record that is obtained with recordings of the body region to be treated with the attached immobilization device and the filter.

11. The method as claimed in claim 2, wherein the immobilization device is an immobilization mask.

12. The method as claimed in claim 2, wherein a cover is applied to a surface of the deformable filter mass.

13. The method as claimed in claim 3, wherein a cover is applied to a surface of the deformable filter mass.

14. The method as claimed in claim 2, further comprising:

obtaining a first planning data record with recordings of the body region to be treated, which is immobilized using the immobilization device;

obtaining a second planning data record with recordings of the immobilization device with the filter; and

balancing the first planning data record with the second planning data record in order to optimize the therapy plan.

15. The method as claimed in claim 3, further comprising:

obtaining a first planning data record with recordings of the body region to be treated, which is immobilized using the immobilization device;

obtaining a second planning data record with recordings of the immobilization device with the filter; and

balancing the first planning data record with the second planning data record in order to optimize the therapy plan.

16. The method as claimed in claim 4, further comprising:

obtaining a first planning data record with recordings of the body region to be treated, which is immobilized using the immobilization device;

obtaining a second planning data record with recordings of the immobilization device with the filter; and

balancing the first planning data record with the second planning data record in order to optimize the therapy plan.

17. The method as claimed in claim 2, wherein the planning data record is a shared planning data record that is obtained with recordings of the body region to be treated with the attached immobilization device and the filter.

18. The method as claimed in claim 3, wherein the planning data record is a shared planning data record that is obtained with recordings of the body region to be treated with the attached immobilization device and the filter.

19. The method as claimed in claim 4, wherein the planning data record is a shared planning data record that is obtained with recordings of the body region to be treated with the attached immobilization device and the filter.

7. A filter apparatus for a particle therapy system, the filter apparatus comprising:

a filter for adjusting the depth of penetration of a particle beam; and

an immobilization device for immobilizing a body region of a patient to be treated,

wherein the filter comprises a deformable filter mass that is applied to the immobilization device by adjusting the geometry of the deformable filter mass to the geometry of the immobilization device.

8. The filter apparatus as claimed in claim 7, wherein the deformable filter mass is a gelatin mass.

9. The filter apparatus as claimed in claim 7, wherein a cover is applied to a surface of the deformable filter mass.

10. The filter apparatus as claimed in claim 8, wherein a cover is applied to a surface of the deformable filter mass.