SYSTEM AND METHOD OF OPTIMIZING A HETEROGENEOUS RADIATION DOSE TO BE DELIVERED TO A PATIENT

• US 20100228116A1
• Filed: 03/03/2010
• Published: 09/09/2010
• Est. Priority Date: 03/03/2009
• Status: Abandoned Application

• Current Assignee: TomoTherapy Incorporated (Accuray Incorporated)
• Original Assignee: TomoTherapy Incorporated (Accuray Incorporated)
• Inventors: Ruchala, Kenneth J., Lu, Weiguo
• Application Number:
  US12/717,086
• Publication Number:
  US 20100228116A1
• Time in Patent Office: Days
• US Class Current: 600/411
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61N 5/103 Treatment planning systems
• 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: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS

Abstract

A radiation therapy treatment system and method of optimizing a heterogeneous dose to be delivered to a patient. The system includes a computer processor and a software program stored in a computer readable medium accessible by the computer processor. The software program is operable to receive a prescribed heterogeneous radiation dose to be delivered to the patient, determine a homogeneous reference dose, calculate a complementary radiation dose by determining a difference between the homogeneous reference dose and the heterogeneous radiation dose, generate a treatment plan for the patient, the treatment plan including an optimized radiation dose to be delivered to the patient, combine the complementary radiation dose and the optimized radiation dose, evaluate the combined radiation dose with respect to the homogeneous reference dose, and display the combined radiation dose.

Claims

1. A radiation therapy treatment system for optimizing radiation dose to be delivered to a patient, the radiation therapy treatment system comprising:

a computer processor; and

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

receive a prescribed heterogeneous radiation dose to be delivered to the patient,

determine a homogeneous reference dose,

calculate a complementary radiation dose by determining a difference between the homogeneous reference dose and the heterogeneous radiation dose,

generate a treatment plan for the patient, the treatment plan including an optimized radiation dose to be delivered to the patient,

combine the complementary radiation dose and the optimized radiation dose,

evaluate the combined radiation dose with respect to the homogeneous reference dose, and

display the combined radiation dose.

2. The radiation therapy treatment system of claim 1 wherein the combined radiation dose is displayed as a dose map.

3. The radiation therapy treatment system of claim 1 wherein the combined radiation dose is displayed as a dose volume histogram.

4. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more MRI images.

5. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more PET images.

6. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more CT images.

7. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on a biological model.

8. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on dose already delivered to the patient.

9. The radiation therapy treatment system of claim 8 wherein the dose already delivered to the patient is evaluated using adaptive radiation therapy.

10. The radiation therapy treatment system of claim 1 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on data from the system.

11. The radiation therapy treatment system of claim 1 wherein the optimized radiation dose to be delivered to the patient is an optimized heterogeneous radiation dose.

12. The radiation therapy treatment system of claim 1 further comprising generating a plurality of treatment plans for the patient.

13. The radiation therapy treatment system of claim 12 wherein each of the treatment plans includes a different optimized heterogeneous radiation dose to be delivered to the patient.

14. The radiation therapy treatment system of claim 1 further comprising receiving a plurality of prescribed heterogeneous doses for a plurality of targets.

15. A method of optimizing radiation dose to be delivered to a patient, the method comprising:

generating a prescribed heterogeneous radiation dose to be delivered to the patient;

generating a homogeneous reference dose;

calculating a complementary radiation dose by determining a difference between the homogeneous reference dose and the heterogeneous radiation dose;

generating a treatment plan for the patient, the treatment plan including an optimized radiation dose to be delivered to the patient;

combining the complementary radiation dose and the optimized radiation dose;

evaluating the combined radiation dose with respect to the homogeneous reference dose; and

displaying the combined radiation dose.

16. The method of claim 15 wherein displaying the combined radiation dose further comprises displaying the combined dose as a dose map.

17. The method of claim 15 wherein displaying the combined radiation dose further comprises displaying the combined dose as a dose volume histogram.

18. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more MRI images.

19. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more PET images.

20. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on one or more CT images.

21. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on a biological model.

22. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on data from the system.

23. The method of claim 15 wherein the prescribed heterogeneous radiation dose to be delivered to the patient is based at least in part on dose already delivered to the patient.

24. The method of claim 23 wherein the dose already delivered to the patient is evaluated using adaptive radiation therapy.

25. The method of claim 15 wherein the optimized radiation dose to be delivered to the patient is an optimized heterogeneous radiation dose.

26. The method of claim 15 further comprising generating a plurality of treatment plans for the patient.

27. The method of claim 26 wherein each of the treatment plans includes a different optimized heterogeneous radiation dose to be delivered to the patient.

28. The method of claim 15 further comprising receiving a plurality of prescribed heterogeneous doses for a plurality of targets.

29. A radiation therapy treatment system for optimizing radiation dose to be delivered to a patient, the radiation therapy treatment system comprising:

a computer processor; and

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

receive a prescribed homogeneous radiation dose to be delivered to the patient,

calculate a heterogeneous radiation dose that has been previously delivered to the patient as a complementary dose,

generate a treatment plan for the patient for at least one remaining treatment fraction, the treatment plan including an optimized radiation dose to be delivered to the patient,

combine the complementary radiation dose and the optimized radiation dose,

evaluate the combined radiation dose with respect to the prescribed homogeneous radiation dose, and

display the combined radiation dose.

30. The radiation therapy treatment system of claim 29 wherein the combined radiation dose is displayed as a dose map.

31. The radiation therapy treatment system of claim 29 wherein the combined radiation dose is displayed as a dose volume histogram.

32. The radiation therapy treatment system of claim 29 wherein the heterogeneous radiation dose is based at least in part on one or more MRI images.

33. The radiation therapy treatment system of claim 29 wherein the heterogeneous radiation dose is based at least in part on one or more PET images.

34. The radiation therapy treatment system of claim 29 wherein the prescribed heterogeneous radiation dose is based at least in part on one or more CT images.

35. The radiation therapy treatment system of claim 29 wherein the heterogeneous radiation dose is based at least in part on a biological model.

36. The radiation therapy treatment system of claim 29 wherein the heterogeneous radiation dose is based at least in part on data from the system.

37. The radiation therapy treatment system of claim 29 wherein the optimized radiation dose to be delivered to the patient is an optimized homogeneous radiation dose.

38. The radiation therapy treatment system of claim 29 further comprising generating a plurality of treatment plans for the patient.

39. The radiation therapy treatment system of claim 38 wherein each of the treatment plans includes a different optimized homogeneous radiation dose to be delivered to the patient.

40. The radiation therapy treatment system of claim 29 further comprising receiving a plurality of prescribed heterogeneous doses for a plurality of targets.

41. A method of optimizing radiation dose to be delivered to a patient, the method comprising:

generating a prescribed homogeneous radiation dose to be delivered to the patient;

calculating a heterogeneous radiation dose that has been previously delivered to the patient as a complementary dose;

generating a treatment plan for the patient for at least one remaining treatment fraction, the treatment plan including an optimized radiation dose to be delivered to the patient;

combining the complementary radiation dose and the optimized radiation dose;

evaluating the combined radiation dose with respect to the prescribed homogeneous radiation dose; and

displaying the combined radiation dose.

42. The method of claim 41 wherein displaying the combined radiation dose further comprises displaying the combined dose as a dose map.

43. The method of claim 41 wherein displaying the combined radiation dose further comprises displaying the combined dose as a dose volume histogram.

44. The method of claim 41 wherein the prescribed heterogeneous radiation dose is based at least in part on one or more MRI images.

45. The method of claim 41 wherein the prescribed heterogeneous radiation dose is based at least in part on one or more PET images.

46. The method of claim 41 wherein the prescribed heterogeneous radiation dose is based at least in part on one or more CT images.

47. The method of claim 41 wherein the prescribed heterogeneous radiation dose is based at least in part on a biological model.

48. The method of claim 41 wherein the prescribed heterogeneous radiation dose is based at least in part on data from the system.

49. The method of claim 41 wherein the optimized radiation dose to be delivered to the patient is an optimized homogeneous radiation dose.

50. The method of claim 41 further comprising generating a plurality of treatment plans for the patient.

51. The method of claim 50 wherein each of the treatment plans includes a different optimized homogeneous radiation dose to be delivered to the patient.

52. The method of claim 41 further comprising receiving a plurality of prescribed heterogeneous doses for a plurality of targets.

53. A method of evaluating a radiation dose, the method comprising:

generating a prescribed heterogeneous radiation dose to be delivered to the patient;

generating a homogeneous radiation dose;

retrieving a previously generated treatment plan, the treatment plan based on the prescribed heterogeneous radiation dose;

calculating a complementary radiation dose by determining a difference between the homogeneous radiation dose and the prescribed heterogeneous radiation dose;

applying the complementary radiation dose to the heterogeneous radiation dose to obtain a combined radiation dose;

comparing the combined radiation dose with respect to the homogeneous radiation dose; and

displaying the combined radiation dose.

54. A method of generating a user interface, the method comprising:

generating a treatment plan based on a heterogeneous dose prescription;

applying an algorithm to the heterogeneous dose prescription to alter the heterogeneous dose prescription;

calculating a dose volume histogram for the altered heterogeneous dose prescription that is visually similar to a dose volume histogram for a homogeneous dose prescription; and

displaying the dose volume histogram to the user so the user can compare the treatment plan based on the heterogeneous dose prescription to a treatment plan based on a homogeneous dose prescription.