Modular software system for guided radiation therapy

• US 7,899,513 B2
• Filed: 07/25/2005
• Issued: 03/01/2011
• Est. Priority Date: 07/23/2004
• Status: Active Grant

• Current Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Original Assignee: Calypso Medical Technologies, Inc. (Siemens AG)
• Inventors: Phillips, Stephen Chase, Seghers, Ryan Kempston
• Primary Examiner(s): Casler; Brian
• Assistant Examiner(s): Roy; Baisakhi
• Application Number:
  US11/190,194
• Publication Number:
  US 20060052694A1
• Time in Patent Office: 2,045 Days
• Field of Search: 600/407, 600/420, 600/424, 600/427, 600/436, 705/2, 705/3, 706/45, 706/46
• US Class Current: 600/407
• CPC Class Codes: A61N 2005/1051 using an active marker markers in general A61B90/39
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1067 in real time, i.e. during treatment
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Abstract

A facility for performing patient localization for radiation therapy is described. The facility activates two or more discrete software modules, and performs interactions between the activated software modules. Based upon the performed interactions, the facility performs patient localization for a radiation therapy session.

Claims

1. A method in a computing system for performing patient localization for radiation therapy, comprising:

activating in the computing system a plurality of discrete software modules, wherein the discrete software modules provide at least two types of radiation therapy applications and each radiation therapy application is comprised of a different subset of the plurality of discrete software modules, and wherein the activating includes invoking a first software module that invokes a subset of the plurality of discrete software modules upon which the invoked software module has dependencies for a selected type of radiation therapy application;

performing interactions between the activated software modules for the selected type of radiation therapy application;

based on the performed interactions, performing patient localization for a radiation therapy session; and

based on the performed interactions, performing patient tracking for the radiation therapy session, wherein the performed patient tracking is performed while a radiation dosage is being delivered to a patient.

2. The method of claim 1 wherein the at least two types of radiation therapy applications are selected from the group consisting of:

a prostate cancer radiation therapy application, a lung cancer radiation therapy application, a breast cancer radiation therapy application, a head cancer radiation therapy application, a neck cancer radiation therapy application, a liver cancer radiation therapy application, a pancreatic cancer radiation therapy application, a cervical cancer radiation therapy application, and a orthopedic cancer radiation therapy application.

3. The method of claim 1 wherein performing patient tracking provides a location in a patient relative to an external reference frame at a frequency such that the tracking error is less than five millimeters.

4. The method of claim 1 wherein the first software module is activated in a first computer system, and wherein a second software module is activated in a second computer system that is connected to the first computer system by a network, and wherein at least one of the performed interactions is an interaction between the first and second software module that traverses the network between the first and second computer systems.

5. The method of claim 1 wherein the modules installed include:

a fiducial interrogation module that drives a sensor array to interrogate a set of one or more transponders;

a controller module that controls the transponder interrogation module and determines the location of each transponder of the set; and

a patient tracking module that determines the location of a patient treatment site relative to a treatment delivery isocenter.

6. The method of claim 5 wherein the modules installed further include:

a tracking station user interface for displaying patient localization information;

a database module for storing patient localization information; and

a localization device tracking module for tracking the location of a patient localization device relative to the location the treatment delivery isocenter.

7. The method of claim 6 wherein the modules installed further include:

a central module representing all of the installed software modules; and

a console user interface for displaying patient localization information to an occupant of a treatment chamber in which radiation therapy is delivered.

8. The method of claim 1 wherein the modules installed include a distinguished module specific to a radiation therapy treatment site.

9. The method of claim 1 wherein the modules installed include a distinguished module specific to a radiation therapy treatment activity.

10. The method of claim 1 wherein the modules installed include a distinguished module specific to a radiation therapy treatment device.

11. The method of claim 10 wherein the radiation therapy treatment device is a specific device.

12. The method of claim 10 wherein the radiation therapy treatment device is a specific class of devices.

13. The method of claim 12 wherein the modules installed further include a second distinguished module corresponding to a specific device among the class of devices.

14. The method of claim 13 wherein the second distinguished module is comprised of code.

15. The method of claim 13 wherein the second distinguished module is comprised of parameter values read and applied by the distinguished module.

16. The method of claim 1 wherein at least a portion of the interactions are performed using a publish and subscribe mechanism.

17. The method of claim 16 wherein at least one of the performed interactions is a publication of distinguished information from a publisher module possessing the distinguished information to at least one subscriber module that has subscribed for the distinguished information.

18. The method of claim 1 wherein at least a portion of the interactions are performed using .NET remoting.

19. The method of claim 1 wherein continuous patient localization is performed for a radiation therapy session.

20. The method of claim 1 wherein all interactions between the modules are performed using a publish and subscribe mechanism.

21. The method of claim 1 wherein the computing system is a distributed computing system comprising at least a first node and a second node, and wherein a first of the software modules is activated in the first node, and wherein a second of the software modules is activated in the second node, and wherein inter-node interactions are performed between the first and second software modules.

22. The method of claim 1 wherein the computing system is a distributed computing system comprised of a plurality of nodes in which software modules may be activated, and wherein at least a portion of the modules may be activated on two or more different nodes of the distributed computing system.

23. The method of claim 1 wherein at least one of the activated software modules operates in a way that is dependent upon the technological approach used to perform patient localization, and wherein at least one of the activated software modules operates in a way that is not dependent on the technological approach used to perform patient localization.

24. The method of claim 1 wherein the first software module determines a result from received data, and wherein a second software module distinct from the first software module independently determines its own result from the received data in order to validate the result of the first software module.

25. The method of claim 1 wherein the first software module determines a result from received data, and wherein a second software module performs at least one back check on the result produced by the first module to validate the result produced by the first module.

26. The method of claim 1 wherein the interactions are performed in a manner that is independent of hardware architecture and operating system identity.

27. A non-transitory computer-readable storage medium whose contents cause a computing system to perform a method for performing patient localization for radiation therapy, comprising:

activating in the computing system a plurality of discrete software components, wherein the discrete software components provide at least two types of radiation therapy applications and each radiation therapy application is comprised of a different subset of the plurality of discrete software components, and wherein the activating includes invoking a first software component that invokes a subset of the plurality of discrete software components upon which the invoked software component has dependencies for a selected type of radiation therapy application;

performing interactions between the activated software components for the selected type of radiation therapy application; and

based on the performed interactions, performing patient localization for a radiation therapy session.

28. A computing system for performing patient localization, comprising:

two or more networked nodes; and

a localization initiation subsystem that, for each of a plurality of discrete software modules, activates the software module in one of the nodes, enabling the activated software modules to perform interactions through which patient localization is performed for a radiation therapy session, wherein the discrete software modules provide at least two types of radiation therapy applications and each radiation therapy application is comprised of a different subset of the plurality of discrete software modules, and wherein the activation of the software module in one of the nodes includes invoking the software module which then invokes a subset of the plurality of discrete software modules upon which the invoked software module has dependencies for a selected type of radiation therapy application.