Multi-field radiation treatment plan method and apparatus

Patent metadata

Field	Value
Publication number	US-2025161713-A1
Application number	US-202318510771-A
Country	US
Kind code	A1
Filing date	Nov 16, 2023
Priority date	Nov 16, 2023
Publication date	May 22, 2025
Grant date	—

Abstract

A control circuit automatically models a multi-field treatment arrangement as a single composite trajectory that includes a plurality of treatment fields to provide a single composite/multi-field treatment arrangement, and then optimizes the multi-field radiation treatment plan as a function of the single composite/multi-field treatment arrangement.

First claim

What is claimed is:

1 . A method to facilitate optimizing a multi-field radiation treatment plan for a multi-field treatment arrangement for a particular patient presenting a particular target volume, the method comprising:
by a control circuit:
automatically modeling the multi-field treatment arrangement as a single composite trajectory that includes a plurality of treatment fields to provide a single composite/multi-field treatment arrangement;
optimizing the multi-field radiation treatment plan as a function of the single composite/multi-field treatment arrangement.

2 . The method of claim 1 wherein at least two of the plurality of treatment fields partially overlap with one another.

3 . The method of claim 1 wherein each of the plurality of treatment fields has a corresponding arc trajectory.

4 . The method of claim 3 wherein the arc trajectories for each of the plurality of treatment fields are co-planar with one another.

5 . The method of claim 3 wherein at least one of the corresponding arc trajectories is a reverse direction of another one of the corresponding arc trajectories.

6 . The method of claim 1 wherein automatically modeling the multi-field treatment arrangement as a single composite trajectory comprises, at least in part, arranging each of the treatment fields of the plurality of treatment fields to have corresponding control points, and wherein the control points for each of the treatment fields are co-aligned with one another and optimized as an array of composite control points.

7 . The method of claim 6 wherein the control points for each of the treatment fields are co-aligned with one another such that beam directions of respective ones of the control points are at least substantially the same between the treatment fields.

8 . The method of claim 7 wherein notwithstanding the co-alignment of the treatment fields with one another, a beam's eye view for a given one of the control points for a first one of the treatment fields can be different from a beam's eye view for the same given one of the control points for a second one of the treatment fields.

9 . The method of claim 7 wherein notwithstanding the co-alignment of the treatment fields with one another, a beam's eye view as determined, at least in part, by at least one beam shaping apparatus for a given one of the control points for a first one of the treatment fields can be different from a beam's eye view for the same given one of the control points for a second one of the treatment fields.

10 . The method of claim 9 wherein the beam's eye view is determined, at least in part, by at least one of a collimator position and a collimator angle.

11 . An apparatus to facilitate optimizing a multi-field radiation treatment plan for a multi-field treatment arrangement for a particular patient presenting a particular target volume, the apparatus comprising:
a control circuit configured to: automatically model the multi-field treatment arrangement as a single composite trajectory that includes a plurality of treatment fields to provide a single composite/multi-field treatment arrangement; optimize the multi-field radiation treatment plan as a function of the single composite/multi-field treatment arrangement.

12 . The apparatus of claim 11 wherein at least two of the plurality of treatment fields partially overlap with one another.

13 . The apparatus of claim 11 wherein each of the plurality of treatment fields has a corresponding arc trajectory.

14 . The apparatus of claim 13 wherein the arc trajectories for each of the plurality of treatment fields are co-planar with one another.

15 . The apparatus of claim 13 wherein at least one of the corresponding arc trajectories is a reverse direction of another one of the corresponding arc trajectories.

16 . The apparatus of claim 11 wherein the control circuit is configured to automatically model the multi-field treatment arrangement as a single composite trajectory by, at least in part, arranging each of the treatment fields of the plurality of treatment fields to have corresponding control points, and wherein the control points for each of the treatment fields are co-aligned with one another and optimized as an array of composite control points.

17 . The apparatus of claim 16 wherein the control points for each of the treatment fields are co-aligned with one another such that beam directions of respective ones of the control points are at least substantially the same between the treatment fields.

18 . The apparatus of claim 17 wherein notwithstanding the co-alignment of the treatment fields with one another, a beam's eye view for a given one of the control points for a first one of the treatment fields can be different from a beam's eye view for the same given one of the control points for a second one of the treatment fields.

19 . The apparatus of claim 17 wherein notwithstanding the co-alignment of the treatment fields with one another, a beam's eye view as determined, at least in part, by at least one beam shaping apparatus for a given one of the control points for a first one of the treatment fields can be different from a beam's eye view for the same given one of the control points for a second one of the treatment fields.

20 . The apparatus of claim 19 wherein the control circuit is configured to determine the beam's eye view, at least in part, by at least one of a collimator position and a collimator angle.

Assignees

• Siemens Healthineers Int Ag

Inventors

• Tallinen Tuomas
• Myllykoski Mirko
• Rusanen Marko
• Peltola Jarkko

Classifications

• A61N5/1048

  Monitoring, verifying, controlling systems and methods · CPC title

• A61N5/1031 Primary

  using a specific method of dose optimization · CPC title

• A61N2005/1035

  Simulated annealing · CPC title

• A61N5/1049

  for verifying the position of the patient with respect to the radiation beam · CPC title

• A61N5/1045

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