Method and apparatus to optimize a radiation treatment plan

Patent metadata

Field	Value
Publication number	US-12138478-B2
Application number	US-202117555782-A
Country	US
Kind code	B2
Filing date	Dec 20, 2021
Priority date	Dec 20, 2021
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

Patient information for a particular patient, radiation treatment information, and information regarding a particular radiation treatment platform that includes at least one multi-leaf collimator are each accessed. These teachings then provide for optimizing a radiation treatment plan to dose at least one treatment volume in the particular patient using the particular radiation treatment platform as a function of the patient information, the radiation treatment information, and the information regarding the particular radiation treatment platform, wherein the optimizing does not include optimizing movement of any leaves of the multi-leaf collimator.

First claim

What is claimed is:

1. A method comprising:
by a control circuit:
accessing patient information for a particular patient, radiation treatment information, and information regarding a particular radiation treatment platform that includes at least one multi-leaf collimator;
optimizing a radiation treatment plan to dose at least one treatment volume in the particular patient using the particular radiation treatment platform as a function of the patient information, the radiation treatment information, and the information regarding the particular radiation treatment platform, wherein the optimizing:
does not include optimizing movement of any leaves of the multi-leaf collimator; and
comprises optimizing the radiation treatment plan as a function, at least in part, of monitor unit modulation by optimizing monitor unit modulation as a function of a least one of at least one target coverage metric and at least one normal tissue treatment objective, with monitor units serving as an only parameter that is being optimized using a corresponding cost function.

2. The method of claim 1 wherein optimizing the radiation treatment plan includes outputting a radiation treatment plan that comprises a plurality of conformal arc fields.

3. The method of claim 2 wherein outputting the radiation treatment plan comprises outputting a radiation treatment plan that comprises a plurality of conformal arc fields with variable monitor unit per gantry rotation per control point.

4. The method of claim 1 wherein optimizing the radiation treatment plan comprises optimizing a radiation treatment plan that uses the multi-leaf collimator as well as at least one of at least one jaw and at least one collimator angle to conformally shape a radiation beam with respect to a given field of view of the treatment volume without also using the multi-leaf collimator or the at least one jaw to modulate the radiation beam.

5. The method of claim 1 wherein the information regarding a particular radiation treatment platform comprises, at least in part, a set of user-specified treatment arc fields.

6. The method of claim 5 wherein the set of user-specified treatment arc fields can include at least two treatment arc fields that have differing isocenters.

7. The method of claim 1 wherein the optimizing does not include any cost function as a function of dose that corresponds to movement of any leaves of the multi-leaf collimator, movement of jaw positions, or collimator angle.

8. An apparatus comprising:
a memory having stored therein patient information for a particular patient, radiation treatment information, and information regarding a particular radiation treatment platform that includes at least one multi-leaf collimator;
a control circuit operably coupled to the memory and configured to optimize a radiation treatment plan to dose at least one treatment volume in the particular patient using the particular radiation treatment platform as a function of the patient information, the radiation treatment information, and the information regarding the particular radiation treatment platform, wherein the optimizing:
does not include optimizing movement of any leaves of the multi-leaf collimator; and
comprises optimizing the radiation treatment plan as a function, at least in part, of monitor unit modulation by optimizing monitor unit modulation as a function of a least one of at least one target coverage metric and at least one normal tissue treatment objective, with monitor units serving as an only parameter that is being optimized using a corresponding cost function.

9. The apparatus of claim 8 wherein the control circuit is configured to optimize the radiation treatment plan by outputting a radiation treatment plan that comprises a plurality of conformal arc fields.

10. The apparatus of claim 9 wherein the control circuit is configured to output the radiation treatment plan by outputting a radiation treatment plan that comprises a plurality of conformal arc fields with variable monitor unit per gantry rotation per control point.

11. The apparatus of claim 8 wherein the control circuit is configured to optimize the radiation treatment plan by optimizing a radiation treatment plan that uses the multi-leaf collimator as well as at least one jaw and collimator angle to conformally shape a radiation beam with respect to a given field of view of the treatment volume without also using the multi-leaf collimator or the at least one jaw to modulate the radiation beam.

12. The apparatus of claim 8 wherein the information regarding a particular radiation treatment platform comprises, at least in part, a set of user-specified treatment arc fields.

13. The apparatus of claim 12 wherein the set of user-specified treatment arc fields can include at least two treatment arc fields that have differing isocenters.

14. The apparatus of claim 8 wherein the control circuit is configured such that the optimizing does not include any cost function as a function of dose that corresponds to movement of any leaves of the multi-leaf collimator, movement of jaw positions, or collimator angle.

Assignees

• Siemens Healthineers Int Ag

Inventors

• Peltola Jarkko
• Rusanen Marko
• Hyvönen Heini
• Tallinen Tuomas
• Boylan Christopher

Classifications

• A61N2005/1074

  Details of the control system, e.g. user interfaces · CPC title

• A61N5/1048

  Monitoring, verifying, controlling systems and methods · CPC title

• A61N5/1045

  using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT · CPC title

• A61N5/1028

  using radiation sources applied onto the body · CPC title

• A61N5/1031 Primary

  using a specific method of dose optimization · CPC title