System and method for tumor ablation treatment planning including core tumor, margin and healthy tissue coverage

Patent metadata

Field	Value
Publication number	US-10695129-B2
Application number	US-201615552384-A
Country	US
Kind code	B2
Filing date	Mar 24, 2016
Priority date	Mar 26, 2015
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A system for ablation planning and treatment includes a delineation module ( 124 ) configured to distinguish tissue types in an image, the tissue types including at least a core tissue and a margin zone encapsulating the core tissue. A treatment planning module ( 140 ) is configured to apply weightings in a cost function to prioritize ablation coverage of the tissue types including the core tissue and the margin zone to determine ablation characteristics that achieve an ablation composite in accordance with user preferences. A graphical user interface ( 122 ) is rendered on a display to indicate the core tissue, the margin zone, the ablation composite and permit module user selection of one or more treatment methods.

First claim

The invention claimed is:

1. A system for ablation planning and treatment, comprising:
a delineation module configured to distinguish tissue types in an image, the tissue types including at least a core tissue and a margin zone encapsulating the core tissue;
a treatment planning module configured to apply each of at least two sets of weightings in a cost function to prioritize ablation coverage in and surrounding a planned treatment volume including the core tissue and in the margin zone to determine candidate treatment plan to achieve an ablation composite in accordance with user preferences; and
a graphical user interface rendered on a display to indicate the core tissue, the margin zone, the ablation composite and permit user selection of one or more treatment method, the graphic user interface including a graphic representation representing a portion of the region covered by the ablation relative to collateral damage comprising a volume of the healthy tissue destroyed by ablation.

2. The system as recited in claim 1 , wherein the margin zone includes at least two discretely delineated shells, each shell being spaced apart from others and existing between the core tissue and healthy tissue.

3. The system as recited in claim 2 , wherein the treatment planning module is configured to selectively apply one of a plurality of predefined treatment methods, each pre-defined treatment planning method including a method with preassigned weighting for each of the shells.

4. The system as recited in claim 1 , wherein the margin zone includes a plurality of regions adjacent to and surrounding the core tissue, the regions being independently spatially distributed peripherally around the core tissue.

5. The system as recited in claim 1 , wherein the tissue types further include healthy tissue surrounding the core tissue and critical structures.

6. The system as recited in claim 3 , wherein the plurality of treatment planning methods implement at least one of a uniform treatment plan, a logarithmic treatment plan and a maxmargin treatment plan.

7. The system as recited in claim 1 , wherein the treatment planning module is configured to selectively apply one of a plurality of predefined treatment methods, the plurality of treatment planning methods including different weightings for each of a plurality of regions of the margin zone, the weighting being selected in accordance with a goal of the ablation treatment plan.

8. The system as recited in claim 7 , wherein coverage of the margin zone is indicated in metrics, for each of the treatment planning methods, presented on the display of the graphical user interface in one or more of a table, a graph or a number for determining the coverage for each of the treatment planning methods.

9. The system as recited in claim 3 , wherein the plurality of treatment planning methods includes a custom treatment plan.

10. The system as recited in claim 1 , wherein
the margin zone includes a plurality of shells circumscribing the core tissue;
the treatment planning module is configured to apply one or more treatment methods; and wherein the one or more treatment methods include different weightings for each of the shells and the weightings are selected on the graphical user interface in accordance with a goal of an ablation treatment plan.

11. The system as recited in claim 10 , wherein the plurality of shells include an automatically selectable pre-defined configuration or a user-provided configuration.

12. The system as recited in claim 10 , wherein the tissue types further include healthy tissue surrounding the core tissue and critical structures.

13. The system as recited in claim 10 , wherein the treatment planning module simulates at least one of a uniform treatment plan, a logarithmic treatment plan and a maxmargin treatment plan.

14. The system as recited in claim 10 , wherein coverage of the margin zone is indicated on the display of the user interface in metrics, for one or more treatment methods, presented in one or more of a table, a graph, or a number for determining the coverage for a planned ablation procedure.

15. A method for ablation planning and treatment, comprising:
delineating at least a core tissue and a margin zone encapsulating the core tissue of a diagnostic imaging scan, the margin zone including a plurality of regions, wherein the core tissue is a tumor and tumor cells in the margin region are not apparent from the diagnostic imaging scan;
applying weightings in a cost function to prioritize ablation coverage including applying different weightings to the core tissue and the plurality of regions of the margin zone to determine ablation characteristics that achieve an ablation composite in accordance with user preferences; and
rendering a graphical user interface on a display to indicate ablation coverage in the core tissue and in each of the plurality of regions of the margin zone, in the ablation composite, the graphic user interface including a graphic representation representing a percentage of the core region covered by the ablation relative to collateral damage, the collateral damage comprising a volume of the healthy tissue destroyed by ablation.

16. A system for ablation planning and treatment, comprising:
a user interface including a user input device and a display;
one or more processors interconnected with the user interface and configured to:
receive a diagnostic image of a patient,
with input from the user input device, segment the received image to identify a core region including tumor tissue and at least a first margin region and a second margin region surrounding the core tissue,
applying weightings to a cost function to optimize ablation coverage to the core region, the first margin region, the second margin region, and healthy tissue surrounding the core region and the first and second margin regions,
receiving and applying each of a plurality of ablation treatment algorithms, each treatment algorithm having different weightings for the cost function,
applying each of the treatment algorithms to the segmented image to determine ablation coverage in each of the core region, the first margin region, the second margin region, and the healthy tissue,
generating a display indicative of ablation metrics reflecting quantitative attributes of each of the treatment algorithms, the quantitative attributes including ablation coverage of each of the core region, the first margin region, the second margin region, and the healthy tissue, the display including a graphic representation representing a completeness of coverage of the core region covered by the ablation relative to collateral damage, the collateral damage comprising a volume of the healthy tissue destroyed by ablation,
receiving a selection of one of the ablation planning algorithms from the user input device, and
controlling an ablation device to perform ablation in the imaged region of the subject in accordance with the selected ablation treatment plan.

17. The system as recited in claim 16 , wherein the cost function maximizes ablated voxels in the core region, minimizes ablated voxels in the healthy region, and optimizes ablated voxels individually in each of the margin regions.

18. The system as recited in claim 16 , wherein the cost function is defined as:

Cost
=

W
ct

*

Assignees

• Koninklijke Philips Nv

Inventors

• Dalal Sandeep
• Kruecker Jochen

Classifications

• G16H20/40

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• A61B18/12

  by passing a current through the tissue to be heated, e.g. high-frequency current · CPC title

• A61B2018/1425

  Needle · CPC title

• A61B2034/107

  Visualisation of planned trajectories or target regions · CPC title

• A61B18/1477

  Needle-like probes · CPC title