Flexible treatment planning

• US 7,298,819 B2
• Filed: 09/29/2005
• Issued: 11/20/2007
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Accuray Incorporated
• Original Assignee: Accuray Incorporated
• Inventors: West, Jay B., Wang, Jin-Wu J., Dooley, John R., Bodduluri, Radhika Mohan
• Primary Examiner(s): THOMAS, COURTNEY D
• Application Number:
  US11/241,658
• Publication Number:
  US 20060067469A1
• Time in Patent Office: 782 Days
• Field of Search: 378/65, 600/407
• US Class Current: 378/65
• CPC Class Codes: A61N 5/1031 using a specific method of dose optimization

Abstract

A flexible treatment planning system configured to enable the user to utilize both forward planning and inverse planning techniques is described.

Claims

1. A method, comprising:

performing forward planning, at least in part, to develop a treatment plan using a first subset of beams of a plurality of beams, wherein performing forward planning comprises selecting a direction and an intensity for each beam in the first subset of beams; and

performing inverse planning, at least in part to develop the treatment plan.

2. The method of claim 1, wherein inverse planning is performed using a second subset of beams of the plurality of beams.

3. The method of claim 1, wherein the second subset of beams does not include any of the first subset of beams.

4. The method of claim 1, wherein the second subset of beams includes one or more beams from the first subset of beams.

5. The method of claim 2, wherein each of the plurality of beams is characterized by a plurality of parameters comprising a radiation emission point, a distance to a target, an orientation, and a radiation dose weight, and wherein selecting the direction comprises selecting the radiation emission point and the orientation for each beam in the first subset of beams.

6. The method of claim 5, wherein at least one of the plurality of parameters of each beam in the first subset of beams is generated by a user, and wherein at least one of the parameters of the second subset of beams is generated by an inverse treatment planning module.

7. The method of claim 6, wherein the second subset of beams may include one or more beams from the first subset of beams.

8. The method of claim 7, wherein the second subset of beams does not include any of the first subset of beams.

9. The method of claim 1, wherein

performing forward planning comprises selecting the first subset of beams from among the plurality of beams, wherein each beam in the first subset of beams is based on user generated values representative of a radiation emission point, a target point, and a radiation dose weight;

and wherein

performing inverse planning comprises determining at least one of the radiation emission points, the target point and the radiation dose weight of a second subset of beams.

10. The method of claim 1, wherein selecting the direction comprises selecting an emission point and an orientation for each of the first subset of beams.

11. The method of claim 10, wherein performing forward planning comprises generating a dose distribution.

12. The method of claim 1, wherein performing forward planning further comprises generating a first beam profile with the first subset of beams to target a bulk region of a target, and wherein performing inverse planning comprises generating a second beam profile with the second subset of beams to target a boundary region of the target.

13. The method of claim 12, wherein the first beam profile is an isocentric beam profile and wherein the second beam profile is a non-isocentric beam profile.

14. The method of claim 1, wherein performing forward planning further comprises generating a first beam profile with the first subset of beams to target a higher intensity region of a target, and wherein performing inverse planning comprises generating a second beam profile with the second subset of beams to target a lower intensity region of the target.

15. The method of claim 1, wherein performing inverse planning comprises generating a non-isocentric beam profile with the plurality of beams and wherein performing forward planning comprises choosing the first subset of beams from among the plurality of beams.

16. The method of claim 15, wherein performing inverse planning further comprises:

assigning weights to each of the first subset of beams; and

recalculating a resulting dose distribution from the first subset of beams.

17. The method of claim 16 wherein performing inverse planning further comprises changing the chosen first subset of beams.

18. The method of claim 12, wherein the target has a regular shape.

19. The method of claim 12, wherein the target has an irregular shape.

20. The method of claim 1, wherein inverse planning is performed using the first subset of beams.

21. A treatment planning system, comprising a forward treatment planning module integrated with an inverse treatment planning module to develop a same treatment plan, wherein the forward planning module is configured to enable a user to select a direction and an intensity for a first subset of beams of a plurality of beams.

22. The treatment planning system of claim 21, wherein

the forward treatment planning module is configured to develop a portion of the treatment plan using forward treatment planning techniques;

and wherein

the inverse treatment planning module is coupled with the forward treatment planning module, the inverse treatment planning module is configured to develop another portion of the treatment plan.

23. The treatment planning system of claim 21, wherein the forward planning module is configured to enable the user to select the first subset of beams from among the plurality of beams, wherein each beam in the first subset of beams is based on user generated values representative of a radiation emission point, a target point and a radiation dose weight, and wherein the inverse planning module is configured to determine at least one of the radiation emission points, the target point and the radiation dose weight of a second subset of beams of the plurality of beams.

24. The treatment planning system of claim 21, wherein enabling the user to select the direction comprises enabling the user to select a radiation emission point and an orientation for each of the plurality of radiation beams.

25. The treatment planning system of claim 21, wherein the forward planning module is configured to generating a dose distribution.

26. The treatment planning system of claim 21, wherein the forward treatment planning module is configured to generate a first beam profile with the first subset of beams to target a bulk region of a target, and wherein the inverse treatment planning module is configured to generate a second beam profile with the second subset of beams to target a boundary region of the target.

27. The treatment planning system of claim 26, wherein the first beam profile is an isocentric beam profile and wherein the second beam profile is a non-isocentric beam profile.

28. The treatment planning system of claim 21, wherein the forward treatment planning module is configured to generate a first beam profile with the first subset of beams to target a higher intensity region of a target, and wherein the inverse treatment planning module is configured to generate a second bean profile with the second subset of beams to target a lower intensity region of the target.

29. The treatment planning system of claim 21, wherein the inverse treatment planning module is configured to generate a non-isocentric beam profile with the plurality of beams and wherein the forward treatment planning module is configured to enable choosing of the first subset of beams from among the plurality of beams.

30. The treatment planning system of claim 29, wherein the inverse treatment planning module is further configured to assign weights to each of the first subset of beams and recalculating a resulting dose distribution from the first subset of beams.

31. The treatment planing system of claim 30, wherein the inverse treatment planning module is further configured to enable changing of the chosen first subset of beams.

32. The treatment planning system of claim 26, wherein the target has a regular shape.

33. The treatment planning system of claim 26, wherein the target has an irregular shape.

34. The treatment planning system of claim 21, wherein inverse treatment planning module is configured to develop the treatment plan using the first subset of beams.

35. A treatment planning system, comprising:

means for developing a treatment plan using, at least in part, a forward planning module, wherein the forward planning module is configured to enable a user to select a direction and an intensity for each of a first subset of beams; and

means for developing the treatment plan using, at least in part, an inverse planning module.

36. An article of manufacture, comprising:

a machine-accessible medium including data that, when accessed by a machine, cause the machine to perform operations comprising;

developing, at least in part, a treatment plan based on user inputted forward treatment plan parameters comprising a radiation emission point, a target point and a radiation dose weight for a first subset of beams; and

developing, at least in part, the treatment plan using an inverse planning algorithm.

37. The article of manufacture of claim 36, wherein developing, at least in part, the treatment plan using the inverse planning algorithm comprises determining at least one of the radiation emission point, the target point and the radiation dose weight of a second subset of beams.

38. The article of manufacture of claim 37, wherein the second subset of beams includes one or more beams from the first subset of beams.

39. The article of manufacture of claim 38, wherein the second subset of beams does not include any of the first subset of beams.

40. The article of manufacture of claim 36, wherein developing, at least in part, the treatment plan based on user inputted forward treatment plan parameters comprises generating a dose distribution.

41. The article of manufacture of claim 36, wherein developing, at least in part, the treatment plan based on user inputted forward treatment plan parameters comprises enabling the user to select the first subset of beams from among the plurality of beams, and wherein developing, at least in part, the treatment plan using the inverse planning algorithm comprises determining at least one of the radiation emission points, the target point and the radiation dose weight of a second subset of beams of the plurality of beams.