Brachytherapy system for prostate cancer treatment with computer implemented systems and processes to facilitate pre-implantation planning and post-implantation evaluations with storage of multiple plan variations for a single patient

• US 6,327,490 B1
• Filed: 02/26/1999
• Issued: 12/04/2001
• Est. Priority Date: 02/27/1998
• Status: Expired due to Term

• Current Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Original Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Inventors: Spetz, Kevin Stewart
• Primary Examiner(s): Manuel, George
• Application Number:
  US09/258,122
• Time in Patent Office: 1,012 Days
• Field of Search: 600/425, 600/426, 600/427, 600/428, 600/429, 600/462, 600/463, 600/464, 600/465, 600/466, 606/108, 606/130, 424/1.11, 424/1.33
• US Class Current: 600/427
• CPC Class Codes: A61N 5/1027 Interstitial radiation therapy
• CPC Class Codes: A61N 5/103 Treatment planning systems

Abstract

A system for assisting a user in preparing a brachytherapy pre-implantation plan and post-implantation evaluation for prostate cancer is disclosed. Image scans are loaded into the system. The user places seeds on the various image scans to treat the prostate cancer. The system of the present invention provides for creation of multiple variations to allow a user to compare and contrast plans or evaluations. A user can more easily move between variations of an original plan or evaluation, thereby simplifying the plan and evaluating process. Creation of multiple variations will depend upon altering certain user defined variables.

Claims

1. In a computer implemented system for assisting in an interstitial radiation therapy treatment, where the computer receives two-dimensional images of a three-dimensional treatment area and the computer system comprises a display for graphically displaying the two-dimensional images, and a processor for creating interstitial radiation therapy treatment plans, a method comprising the steps of:

providing variation specific parameters;

creating an original plan using variation specific parameters;

creating a variation plan by manipulating variation specific parameters of the original plan; and

displaying the original plan and the variation plan on the display, wherein the original plan and the variation plan are mutually accessible for comparison on the display.

2. The method according to claim 1, wherein the step of creating the variation plan further comprises:

(a) saving the original plan;

(b) manipulating variation specific parameters of the original plan; and

(c) creating a variation plan; and

the step of displaying further comprises displaying the saved original plan and the variation plan.

3. The method according to claim 2, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

4. The method according to claim 1, wherein the step of creating the variation plan further comprises:

(a) saving the original plan;

(b) creating a variation plan, where the variation plan is identical to the original plan; and

(c) manipulating variation specific parameters of the variation plan; and

the step of displaying further comprises displaying the saved original plan and the manipulated variation plan.

5. The method according to claim 4, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional; and

g. an isodose level for three-dimensional display.

6. The method according to claim 1, further comprising the steps of:

saving at least one of the original plan and the variation plan.

7. The method according to claim 1, further comprising the step of:

recalling a saved plan, wherein the saved plan is one of a saved original plan and a saved variation plan; and

comparing the saved plan to the other of the variation plan or the original plan.

8. The method according to claim 1, further comprising the step of designating the variation specific parameters.

9. In a computer implemented system for assisting in an interstitial radiation therapy treatment, where the computer receives two-dimensional images of a three-dimensional treatment area and the computer system comprises a display for graphically displaying the two-dimensional images, and a processor for creating interstitial radiation therapy treatment evaluations of the treatment area, a method comprising the steps of:

providing variation specific parameters;

creating an original evaluation using variation specific parameters;

creating a variation evaluation by manipulating variation specific parameters of the original evaluation; and

displaying the original evaluation and the variation evaluation on the display, wherein the original evaluation and the variation evaluation are mutually accessible for comparison on the display.

10. The method according to claim 9, wherein the step of creating the variation evaluation further comprises:

(a) saving the original evaluation;

(b) manipulating variation specific parameters of the original evaluation; and

(c) creating a variation evaluation; and

the step of displaying further comprises displaying the saved original evaluation and the variation evaluation.

11. The method according to claim 10, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

12. The method according to claim 10, further comprising steps of:

saving at least one of the original evaluation and the variation evaluation.

13. The method according to claim 10, further comprising the step of:

recalling a saved evaluation, wherein the saved evaluation is one of a saved original evaluation and a saved variation evaluation; and

comparing the saved evaluation the other of the variation evaluation or the original evaluation.

14. The method according to claim 9, wherein the step of creating the variation evaluation further comprises:

(a) saving the original evaluation;

(b) creating a variation evaluation, where the variation evaluation is identical to the original evaluation; and

(c) manipulating variation specific parameters of the variation evaluation; and

the step of displaying further comprises displaying the saved original evaluation and the manipulated variation evaluation.

15. The method according to claim 14, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

16. The method according to claim 9, further comprising the step of designating the variation specific parameters.

17. A computer implemented system for assisting in an interstitial radiation therapy treatment, the system comprising:

means for receiving a plurality of two-dimensional images of a three-dimensional treatment area;

means for providing variation specific parameters;

means for creating an original interstitial radiation therapy treatment plan in the treatment area using variation specific parameters;

means for creating a variation plan by manipulating variation specific parameters of the original plan; and

means for displaying the original plan and the variation plan, wherein the original plan and the variation plan are mutually accessible for comparison on the display means.

18. The system according to claim 17, wherein creating the variation plan further comprises:

(a) saving the original plan;

(b) manipulating variation specific parameters of the original plan; and

(c) creating a variation plan; and

displaying further comprises displaying the saved original plan and the variation plan.

19. The system according to claim 18, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

20. The system according to claim 17, wherein creating the variation plan further comprises:

(a) saving the original plan;

(b) creating a variation plan, where the variation plan is identical to the original plan; and

(c) manipulating variation specific parameters of the variation plan; and

displaying further comprises displaying the saved original plan and the manipulated variation plan.

21. The system according to claim 20, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional.

22. The system according to claim 17, further comprising:

means for saving at least one of the original plan and the variation plan.

23. The system according to claim 17, further comprising:

means for recalling a saved plan, wherein the saved plan is one of a saved original plan and a saved variation plan; and

means for comparing the saved plan to the other of the variation plan or the original plan.

24. The method according to claim 17, further comprising the step of designating the variation specific parameters.

25. A computer implemented system for assisting in an interstitial radiation therapy treatment, the system comprising:

means for receiving a plurality of two-dimensional images of a three-dimensional treatment area;

means for providing variation specific parameters;

means for creating an original interstitial radiation therapy treatment evaluation in the treatment area using variation specific parameters;

means for creating a variation evaluation by manipulating variation specific parameters of the original evaluation; and

means for displaying the original evaluation and the variation evaluation, wherein the original evaluation and the variation evaluation are mutually accessible for comparison on the display means.

26. The system according to claim 25, wherein creating the variation evaluation further comprises:

(a) saving the original evaluation;

(b) manipulating variation specific parameters of the original evaluation; and

(c) creating a variation evaluation; and

displaying further comprises displaying the saved original evaluation and the variation evaluation.

27. The system according to claim 26, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

28. The system according to claim 25, wherein creating the variation evaluation further comprises:

(a) saving the original evaluation;

(b) creating a variation evaluation, where the variation evaluation is identical to the original evaluation; and

(c) manipulating variation specific parameters of the variation evaluation; and

displaying further comprises displaying the saved original evaluation and the manipulated variation evaluation.

29. The system according to claim 28, wherein variation specific parameters comprise at least one of:

a. a target dosage;

b. a radiation source type;

c. a radiation source activity level;

d. radiation source positioning;

e. an anisotropy correction constant;

f. a list of isodose values for two-dimensional display; and

g. an isodose level for three-dimensional display.

30. The system according to claim 25, further comprising:

means for saving at least one of the original evaluation and the variation evaluation.

31. The system according to claim 25, further comprising:

means for recalling a saved evaluation, wherein the saved plan is one of a saved original evaluation and a saved variation evaluation; and

means for comparing the saved evaluation to the other of the variation evaluation or the original evaluation.

32. The method according to claim 25, further comprising the step of designating the variation specific parameters.