IP Library Granted Patent US 11,185,715
Granted Patent B2
US 11,185,715 · App. 17/083,051 · Granted Nov 30, 2021

Image-guided radiation treatment with imaging data using imaging radiation at different energy levels

Inventors: Petr Jordan (Redwood City, CA); Andriy Myronenko (San Mateo, CA); Jay B. West (Mountain View, CA); Calvin R. Maurer (San Jose, CA); Prashant Chopra (Foster City, CA); Anuj K. Purwar (Pleasanton, CA); Christopher A. Janko (Redwood City, CA)
Assignee: Accuray Incorporated
A61N5/1037A61B6/482A61N5/1049A61B6/025A61B6/4035A61B6/5223A61B6/583A61N5/1067A61N5/1083A61N2005/1061A61N2005/1062
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Quick Facts
Patent No.
US 11,185,715
App. No.
17/083,051
Granted
Nov 30, 2021
Kind
B2
Abstract

A method of image-guided radiation treatment is described. The method may include acquiring a pre-treatment image of a patient and generating a first set of image data of part or all of the patient using imaging radiation at a first energy level and a second set of image data of part or all of the patient using imaging radiation at a second energy level. The method may also include processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, and wherein part or all of the image data comprises the target. The method may also include registering the enhanced image with the pre-treatment image to obtain a registration result and tracking movement and position of the target using the registration result to generate tracking information.

Claims (47)

1. A method of image-guided radiation, the method comprising:

acquiring a pre-treatment image of a target of a patient;

generating a first set of image data of part or all of the target using imaging radiation at a first energy level and a second set of image data of part or all of the target using imaging radiation at a second energy level;

processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, wherein part or all of the image data comprises the target;

registering the enhanced image with the pre-treatment image to obtain a registration result;

tracking the target using the registration result to generate tracking information; and

directing treatment delivery to the target based on the tracking information obtained from the enhanced image.

2. The method of claim 1 , wherein the pre-treatment image comprises a computed tomography (CT) image.

3. The method of claim 1 , wherein the tracking information obtained from the enhanced image comprises a position of the target.

4. The method of claim 1 , wherein directing treatment delivery comprises:

generating a treatment delivery beam using a treatment delivery system comprising a radiation source; and

directing the treatment delivery beam to the target based on the tracking information.

5. The method of claim 4 , wherein directing treatment delivery comprises adjusting an angle at which the treatment delivery beam is directed to the target.

6. The method of claim 1 , wherein directing treatment delivery comprises moving a treatment couch to position the target of the patient.

7. The method of claim 1 , wherein directing treatment delivery comprises adjusting a collimator to direct a treatment delivery beam to the target based on the tracking information.

8. A system, comprising:

a radiation source;

a processor, operatively coupled with the radiation source, to:

generate a first set of image data of part or all of a target of a patient using imaging radiation at a first energy level and a second set of image data of part or all of the target using imaging radiation at a second energy level;

process the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, wherein part or all of the image data comprises the target;

register the enhanced image with a pre-treatment image of the target to obtain a registration result;

track the target using the registration result to generate tracking information; and

direct treatment delivery, using the radiation source, to the target based on the tracking information obtained from the enhanced image.

9. The system of claim 8 , wherein the pre-treatment image comprises a computed tomography (CT) image.

10. The system of claim 8 , further comprising:

a diagnostic imaging system to acquire a pre-treatment image.

11. The system of claim 8 , wherein to direct treatment delivery, the processor is to:

cause the radiation source to generate a treatment delivery beam; and

direct the treatment delivery beam to the target based on the tracking information.

12. The system of claim 8 , further comprising a treatment couch, wherein the processor is operatively coupled with treatment couch to position the target of the patient based on the tracking information.

13. The system of claim 8 , further comprising a collimator, wherein the processor is operatively coupled with the collimator to adjust the collimator to direct the treatment delivery beam to the target based on the tracking information.

14. The system of claim 8 , wherein the first energy level is an energy level selected within the range of 50-100 kV and the second energy level is an energy level selected within the range of 100-150 kV.

15. A non-transitory machine readable medium that, when executed by a processor, causes the processor to:

generate a first set of image data of part or all of a target of a patient using imaging radiation at a first energy level and a second set of image data of part or all of the target using imaging radiation at a second energy level;

process the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, wherein part or all of the image data comprises the target;

register, by the processor, the enhanced image with a pre-treatment image of the target to obtain a registration result;

track the target using the registration result to generate tracking information; and

direct treatment delivery, using a radiation source, to the target based on the tracking information obtained from the enhanced image.

16. The non-transitory machine readable medium of claim 15 , wherein the pre-treatment image comprises a computed tomography (CT) image.

17. The non-transitory machine readable medium of claim 15 , wherein the processor is further to track information obtained from the enhanced image which comprises a position of the target.

18. The non-transitory machine readable medium of claim 15 , wherein to direct treatment delivery, the processor is to:

generate a treatment delivery beam using a treatment delivery system comprising the radiation source; and

direct the treatment delivery beam to the target based on the tracking information.

19. The non-transitory machine readable medium of claim 18 , wherein to direct treatment delivery, the processor is further to adjust an angle at which the treatment delivery beam is directed to the target.

20. The non-transitory machine readable medium of claim 15 , wherein to direct treatment delivery, the processor is to move a treatment couch to position the target of the patient.

21. The non-transitory machine readable medium of claim 15 , wherein to direct treatment delivery, the processor is to adjust a collimator to direct the treatment delivery beam to the target based on the tracking information.

22. The non-transitory machine readable medium of claim 15 , wherein the first energy level is an energy level selected within the range of 50-100 kV and the second energy level is an energy level selected within the range of 100-150 kV.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 13, 2025
From: ACCURAY INCORPORATED
To: ACCURAY LLC
Reel/Frame 072421/0584 →
RELEASE OF SECURITY INTEREST Recorded Jun 6, 2025
From: FIRST-CITIZENS BANK & TRUST COMPANY
To: ACCURAY INCORPORATED
Reel/Frame 071638/0034 →
SECURITY INTEREST Recorded May 14, 2021
From: ACCURAY INCORPORATED; TOMOTHERAPY INCORPORATED
To: SILICON VALLEY BANK, AS ADMINISTRATIVE AND COLLATERAL AGENT
Reel/Frame 056247/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2020
From: JORDAN, PETR; CHOPRA, PRASHANT; MYRONENKO, ANDRIY; WEST, JAY B.; MAURER, CALVIN R., JR.; PURWAR, ANUJ K.; JANKO, CHRISTOPHER A.
To: ACCURAY, INC.
Reel/Frame 054211/0979 →
Continuity (5)
Continuation 16679686 · Nov 11, 2019
Continuation 15208049 · Jul 12, 2016
Continuation 13536737 · Jun 28, 2012
Provisional Application 61550309 · Oct 21, 2011
Related Publication 20210038918A1 · Feb 11, 2021
Cited By (1)
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