Method and system for processing data relating to a radiation therapy treatment plan

• US 7,639,854 B2
• Filed: 07/21/2006
• Issued: 12/29/2009
• Est. Priority Date: 07/22/2005
• Status: Active Grant

• Current Assignee: TomoTherapy Incorporated (Accuray Incorporated)
• Original Assignee: TomoTherapy Incorporated (Accuray Incorporated)
• Inventors: Ruchala, Kenneth J., Lu, Weiguo, Schnarr, Eric, Mackie, Thomas R., Hughes, John H., Haimerl, Jason, Kapatoes, Jeffrey M., Olivera, Gustavo H.
• Primary Examiner(s): Strege; John B
• Application Number:
  US11/459,108
• Publication Number:
  US 20070041497A1
• Time in Patent Office: 1,257 Days
• Field of Search: 382/128, 382/131, 382/132, 600/427
• US Class Current: 382/128
• CPC Class Codes: A61N 5/103 Treatment planning systems
• CPC Class Codes: A61N 5/1037 taking into account the movement of the target, e.g. 4D-image based planning
• CPC Class Codes: A61N 5/1038 taking into account previously administered plans applied to the same patient, i.e. adaptive radiotherapy
• CPC Class Codes: A61N 5/1042 with spatial modulation of the radiation beam within the treatment head
• CPC Class Codes: A61N 5/1048 Monitoring, verifying, controlling systems and methods
• 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 5/1067 in real time, i.e. during treatment
• CPC Class Codes: A61N 5/1069 Target adjustment, e.g. moving the patient support
• CPC Class Codes: A61N 5/107 in real time, i.e. during treatment

Abstract

A system and method of automatically processing data relating to a radiation therapy treatment plan. The method includes the acts of acquiring image data of a patient, generating a treatment plan for the patient based at least in part on the image data, the treatment plan including a calculated radiation dose to be delivered to the patient, acquiring an on-line image of the patient in substantially a treatment position, delivering at least a portion of the calculated radiation dose to the patient, and automatically recalculating the radiation dose received by the patient.

Claims

1. A method of automatically processing data relating to a radiation therapy treatment plan, the method comprising:

acquiring image data of a patient;

generating a treatment plan for the patient based at least in part on the image data, the treatment plan including a calculated radiation dose to be delivered to the patient;

acquiring an on-line volumetric image of the patient in substantially a treatment position, the image including sufficient image data to allow calculation of dose;

delivering at least a portion of the calculated radiation dose to the patient; and

automatically calculating using a computer the radiation dose using the online volumetric image, the radiation dose reflecting what has been received by the patient.

2. A method as set forth in claim 1 and further comprising automatically performing deformable registration of the image data to accumulate the radiation dose delivered across all images.

3. A method as set forth in claim 2 and further comprising revising the treatment plan in response to the deformable registration.

4. A method as set forth in claim 3 wherein automatically revising the treatment plan further comprises the act of recalculating dose to be delivered in future treatments across all images.

5. A method as set forth in claim 3 wherein the accumulated radiation dose includes delivered radiation doses and future deliveries of radiation doses.

6. A method as set forth in claim 1 and further comprising automatically performing deformable registration of the image data to accumulate predictive radiation doses to be delivered in future treatments.

7. A method as set forth in claim 1 and further comprising automatically displaying a different treatment plan based at least in part on the delivered radiation dose.

8. A method as set forth in claim 7 wherein the different plan is a new plan or a revision of an old plan.

9. A method as set forth in claim 1 and further comprising automatically presenting dosimetric information to a user.

10. A method as set forth in claim 9 and further comprising automatically presenting one of a delivered radiation dose, a planned radiation dose, a comparison of the delivered radiation dose and the planned radiation dose, a gamma function, and a xi function.

11. A method as set forth in claim 1 and further comprising automatically processing images of the patient.

12. A method as set forth in claim 11 wherein the act of automatically processing the images further comprises at least one of merging images, couch replacement, density correction, and application of registration parameters.

13. A method as set forth in claim 1 and further comprising automatically identifying a biological model relating radiation dose delivered to patient effects, and utilizing the biological model to revise the radiation therapy treatment plan.

14. A method as set forth in claim 1 and further comprising defining a software macro to customize at least one automated process.

15. A method as set forth in claim 1 and further comprising automatically identifying a patient treatment parameter falling outside of a defined tolerance, and automatically notifying a user of the violation of the tolerance.

16. A method as set forth in claim 15, wherein the automatic notification occurs via e-mail.

17. A method as set forth in claim 15, wherein the automatic notification occurs via one of a mobile phone and a pager.

18. A method as set forth in claim 1 and further comprising establishing a threshold to determine when automatic replanning occurs.

19. A method as set forth in claim 18 and further comprising stopping treatment based on the threshold.

20. A method as set forth in claim 1 and further comprising generating more than one treatment plan and allowing a user to select one of the plans.

21. A method as set forth in claim 1 and further comprising automatically generating a different treatment plan for the patient based in part on the radiation dose delivered to the patient.

22. A method as set forth in claim 21 wherein the different plan is a new plan or a revision of an old plan.

23. A method as set forth in claim 1 and further comprising automatically replanning based on current anatomy and anticipated anatomy changes of the patient.

24. A method as set forth in claim 1 wherein automatically calculating the radiation dose received by the patient includes incorporating previous dosimetric data from an earlier treatment delivery.

25. A method of automatically processing data relating to a radiation therapy treatment plan, the method comprising:

acquiring volumetric image data of a patient, the image data including sufficient information to allow calculation of dose;

generating a treatment plan for the patient based at least in part on the image data, the treatment plan including a calculated radiation dose to be delivered to the patient;

inputting new data relating to radiation therapy treatment, the data not included in the treatment plan;

delivering at least a portion of the calculated radiation dose to the patient; and

automatically calculating using a computer the radiation dose reflecting what has been received by the patient.

26. A method as set forth in claim 25 wherein the new data is one of registration information and setup information for the patient.

27. A method as set forth in claim 25 wherein the new data is acquired during delivery of the treatment plan.

28. A method as set forth in claim 25 wherein the new data is image data.

29. A method as set forth in claim 28 wherein the image data is from a planning image.

30. A method as set forth in claim 28 wherein the image data is from a previous off-line image.

31. A method as set forth in claim 25 wherein the new data is machine-related data.

32. A method as set forth in claim 25 wherein automatically calculating the radiation dose received by the patient includes using one of a planning image, a modified version of the planning image, an image acquired while the patient is substantially in a treatment position, and a combination of images to calculate the radiation dose received by the patient.

33. A system for automatically processing data relating to a radiation therapy treatment plan, the system comprising:

a radiation therapy treatment device including a computer processor, the radiation therapy treatment device operable to deliver radiation to a patient according to a treatment plan; and

a software program stored in a computer readable medium accessible by the computer processor, the software being operable to

acquire image data of a patient,

generate a treatment plan for the patient based at least in part on the image data, the treatment plan including a calculated radiation dose to be delivered to the patient, acquire an on-line volumetric image, including sufficient image data to allow calculation of dose, of the patient in substantially a treatment position, deliver at least a portion of the calculated radiation dose to the patient, and automatically calculate the radiation dose reflecting what has been received by the patient.

34. A system as set forth in claim 33 wherein the software is further operable to automatically perform deformable registration of the image data to accumulate the radiation dose delivered across all images.

35. A system as set forth in claim 34 wherein the software is further operable to revise the treatment plan in response to the deformable registration.

36. A system as set forth in claim 35 wherein the software being operable to automatically revise the treatment plan includes the software is operable to recalculate dose to be delivered in future treatments across all images.

37. A system as set forth in claim 35 wherein the accumulated radiation dose includes delivered radiation doses and future deliveries of radiation doses.

38. A system as set forth in claim 34 wherein the software is further operable to automatically perform deformable registration of the image data to accumulate predictive radiation doses to be delivered in future treatments.

39. A system as set forth in claim 33 wherein the software is further operable to automatically display a different treatment plan based at least in part on the delivered radiation dose.

40. A system as set forth in claim 39 wherein the different plan is a new plan or a revision of an old plan.

41. A system as set forth in claim 33 wherein the software is further operable to automatically present dosimetric information to a user.

42. A system as set forth in claim 41 wherein the software is further operable to automatically present one of a delivered radiation dose, a planned radiation dose, a comparison of the delivered radiation dose and the planned radiation dose, a gamma function, and a xi function.

43. A system as set forth in claim 33 wherein the software is further operable to automatically process images of the patient.

44. A system as set forth in claim 43 wherein the software being operable to automatically process the images includes being operable to merge at least one of images, couch replacement, density correction, and application of registration parameters.

45. A system as set forth in claim 33 wherein the software is further operable to automatically identify a biological model relating radiation dose delivered to patient effects, and utilize the biological model to revise the radiation therapy treatment plan.

46. A system as set forth in claim 33 wherein the software is further operable to define a software macro to customize at least one automated process.

47. A system as set forth in claim 33 wherein the software is further operable to automatically identify a patient treatment parameter falling outside of a defined tolerance, and automatically notify a user of the violation of the tolerance.

48. A system as set forth in claim 47, wherein the automatic notification occurs via e-mail.

49. A system as set forth in claim 47, wherein the automatic notification occurs via one of a mobile phone and a pager.

50. A system as set forth in claim 33 wherein the software is further operable to establish a threshold to determine when automatic replanning occurs.

51. A system as set forth in claim 50 wherein the software is further operable to stop treatment based on the threshold.

52. A system as set forth in claim 33 wherein the software is further operable to generate more than one treatment plan and allow a user to select one of the treatment plans.

53. A system as set forth in claim 33 wherein the software is further operable to automatically generate a different treatment plan for the patient based in part on the radiation dose delivered to the patient.

54. A system as set forth in claim 53 wherein the different plan is a new plan or a revision of an old plan.

55. A system as set forth in claim 33 wherein the software is further operable to automatically replan based on current anatomy and anticipated anatomy changes of the patient.

56. A system as set forth in claim 33 wherein the software being operable to automatically calculate the radiation dose received by the patient includes the software being operable to incorporate previous dosimetric data from an earlier treatment delivery.