Treatment planning simulation and verification system

• US 8,681,938 B2
• Filed: 01/17/2013
• Issued: 03/25/2014
• Est. Priority Date: 06/25/2003
• Status: Expired due to Fees

• Current Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Original Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Inventors: Myles, Jeremy R.
• Primary Examiner(s): Kao, Glen
• Application Number:
  US13/744,288
• Publication Number:
  US 20130151218A1
• Time in Patent Office: 432 Days
• Field of Search: 378/65
• US Class Current: 378/65
• CPC Class Codes: A61N 2005/1054 using a portal imaging system
• CPC Class Codes: A61N 2005/1062 using virtual X-ray images, e.g. digitally reconstructed radiographs [DRR]
• CPC Class Codes: A61N 5/1027 Interstitial radiation therapy
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders

Abstract

A treatment planning, simulation, and verification system is described. According to one embodiment, a treatment plan and a fluoroscopy data image of a treatment volume are received and the treatment plan is automatically adjusted based on the movement of the fluoroscopy data image. According another embodiment, a system includes a treatment planning component to generate a treatment plan and a simulation component to simulate the execution of the treatment plan.

Claims

1. A single treatment simulator system comprising:

a treatment planning component to receive a treatment plan, the received treatment plan including a first reconstructed radiograph image data;

a simulation component to simulate an execution of the treatment plan on a patient, the simulation component comprising a cone-beam computed tomography scanner to generate a second reconstructed radiograph image data, wherein the simulation compares the first and second reconstructed radiograph image data;

a third component to adjust, if necessary, the treatment plan based on the simulated execution of the treatment plan; and

a fourth component to save an adjustment to the treatment plan, wherein adjusting the treatment plan comprises displaying at the single treatment simulator system, a digital image of the patient, and wherein displaying the digital image includes overlaying a simulator digital image and a reconstructed radiograph image.

2. The system of claim 1, wherein adjusting the treatment plan includes changing the treatment plan after simulation to account for variations in motion, weight, or location of the patient.

3. The system of claim 1, further comprising a treatment source to perform radiation therapy on the patient, while the patient is on a patient support, after adjusting the treatment plan and based on the adjustment to the treatment plan.

4. The system of claim 1, wherein using the first and second reconstructed radiograph image data includes (1) comparing the first and second reconstructed radiograph image data, and (2) checking to ensure that radiation fields of the plan are correct and that a set-up required by the plan can actually be mechanically achieved.

5. The system of claim 1, the simulation component further comprising a collision avoidance component to automatically move the scanner away from a potential collision position to avoid a potential collision.

6. The system of claim 5, wherein adjusting the treatment plan includes accounting for the potential collision in the treatment plan adjustment.

7. The system of claim 5, wherein the collision avoidance component automatically returns the scanner to the potential collision position once the potential collision has passed.

8. The system of claim 1, wherein the treatment plan is received from a separate treatment planning machine;

and further comprising;

a fifth component to transfer and convert, when necessary, the adjusted treatment plan for future use when treating the patient on a different, therapeutic treatment machine.

9. A single treatment simulator system comprising:

a treatment planning component to receive a treatment plan, the received treatment plan including a first reconstructed radiograph image data;

a simulation component to simulate an execution of the treatment plan on a patient, the simulation component comprising a cone-beam computed tomography scanner to generate a second reconstructed radiograph image data, wherein the simulation compares the first and second reconstructed radiograph image data;

a contouring component to perform contouring of the patient using the second reconstructed radiograph image data;

a fourth component to adjust, if necessary, the treatment plan based on the simulated execution of the treatment plan and the contouring of the patient; and

a fifth component to save an adjustment to the treatment plan, wherein adjusting the treatment plan comprises displaying at the single treatment simulator system, a digital image of the patient, and wherein displaying the digital image includes overlaying a simulator digital image and a reconstructed radiograph image.

10. The system of claim 9, wherein contouring comprises:

displaying a digital image of the patient including a target volume on a computer workstation display monitor;

tracing an outline of a treatment area on the digital image; and

superimposing the traced image of the outline onto the patient.

11. The system of claim 10, wherein the digital image is a two-dimensional image.

12. The system of claim 9, wherein contouring further comprises:

viewing and verifying MLC leaf positions or other shielding devices of a treatment source, as defined in the treatment plan.

13. The system of claim 9, wherein adjusting includes adjusting treatment field information to allow for movement in a field;

and wherein adjusting includes adjusting gating information in the treatment plan.

14. A single treatment simulator system comprising:

a treatment planning component to receive a treatment plan, the received treatment plan including a first reconstructed radiograph image data;

a simulation component to simulate an execution of the treatment plan on a patient, the simulation component comprising a cone-beam computed tomography scanner to generate a second reconstructed radiograph image data, the simulation using the first and second reconstructed radiograph image data;

a third component to adjust the treatment plan based on the simulated execution of the treatment plan; and

a fourth component to save an adjustment to the treatment plan;

wherein adjusting the treatment plan includes changing the treatment plan at the single treatment simulator system, if necessary;

wherein adjusting further comprises;

displaying at the single treatment simulator system, a digital image of a patient, wherein the digital image is generated on the single treatment simulator system;

providing at the single treatment simulator system, an input associated with the digital image;

automatically adjusting at the single treatment simulator system, the treatment plan based on the input associated with the digital image; and

recalculating at the single treatment simulator system, a treatment plan based on the input associated with the digital image; and

wherein displaying the digital image includes overlaying a simulator digital image and a reconstructed radiograph image.

15. The system of claim 14, wherein the simulation component generates digital fluoroscopy images of a target volume to confirm the first reconstructed radiograph image data.

16. The system of claim 14, wherein the treatment plan is received from a separate treatment planning machine;

and further comprising;

a fifth component to transfer and convert, when necessary, the adjusted treatment plan for future use when treating the patient on a different, therapeutic treatment machine.

17. The system of claim 14, wherein adjusting the treatment plan comprises:

adjusting automatically at the single treatment simulator system the treatment plan based on movement in a video display of a digital fluoroscopy image;

wherein adjusting includes adjusting treatment field information to allow for movement in a field, and wherein the movement in the video display of the digital fluoroscopic image comprises movement of a patient'"'"'s internal anatomy in a digital video signal from a real time digital x-ray imager.

18. The system of claim 14, wherein adjusting the treatment plan includes adjusting gating information in the treatment plan.

19. The system of claim 14 wherein the simulation component receives digital fluoroscopy images of a target volume to confirm a reconstructed radiograph image, wherein receiving the digital fluoroscopic image comprises receiving the digital fluoroscopic image from a flat panel image detector.

20. The system of claim 14, further comprising:

automatically displaying fields of data based on the digital image.

21. The system of claim 20, wherein the providing includes providing a radiation field input.