System and method for providing assistance in surgery in presence of tissue deformation

Patent metadata

Field	Value
Publication number	US-10467497-B2
Application number	US-201615049870-A
Country	US
Kind code	B2
Filing date	Feb 22, 2016
Priority date	Feb 22, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

Various aspects of a system and a method to provide assistance in a surgery in presence of tissue deformation are disclosed herein. In accordance with an embodiment, the system includes an electronic device that receives one or more tissue material properties of a plurality of surface structures of an anatomical portion. One or more boundary conditions associated with the anatomical portion may also be received. Surface displacement of the anatomical portion may be determined by matching a first surface of the anatomical portion before deformation with a corresponding second surface of the anatomical portion after the deformation. The volume displacement field of the anatomical portion may be computed based on the determined surface displacement, the received one or more tissue material properties, and the received one or more boundary conditions.

First claim

What is claimed is:

1. A system for surgery assistance, said system comprising:
one or more circuits in an electronic device configured to:
receive information related to at least one tissue material property of a plurality of surface structures of an anatomical portion;
receive at least one boundary condition associated with a propensity of deformation of said plurality of surface structures of said anatomical portion;
match a first surface of said anatomical portion before said deformation of said plurality of surface structures of said anatomical portion directly with a corresponding second surface of said anatomical portion after said deformation;
determine surface displacement of said anatomical portion based on said match of said first surface with said corresponding second surface;
compute volume displacement field of said anatomical portion based on said determined surface displacement, said received information, and said received at least one boundary condition; and
apply said computed volume displacement to at least one of said plurality of surface structures for compensation of said deformation in a graphical view of said anatomical portion.

2. The system according to claim 1 , wherein said plurality of surface structures corresponds to heterogeneous anatomical surface structures.

3. The system according to claim 1 , wherein
said anatomical portion corresponds to at least a portion of a brain, and
said plurality of surface structures corresponds to at least two of cortex, vessels, ventricles, or a tumor structure in said anatomical portion of a subject.

4. The system according to claim 1 , wherein said received at least one boundary condition includes at least one of a displaced boundary condition or a stationary boundary condition.

5. The system according to claim 1 , wherein
said one or more circuits are further configured to reconstruct said plurality of surface structures of said anatomical portion based on registration of a dataset,
said dataset is associated with said anatomical portion,
said dataset is received from at least one of a magnetic resonance imaging (MRI) scanner or multimodality sources including said MRI scanner, and
said dataset is registered based on identification of overlapped content of said dataset.

6. The system according to claim 1 , wherein
said one or more circuits are further configured to segment surfaces for said plurality of surface structures by surface segmentation, and
said surface segmentation is based on MRI data before said deformation and said anatomical portion that is in an unopened state prior to surgery.

7. The system according to claim 6 , wherein
said one or more circuits are further configured to create a three-dimensional (3D) structure of said anatomical portion based on a two-dimensional (2D) to 3D geometry process and said surface segmentation,
said created 3D structure comprises said plurality of surface structures, and
said plurality of surface structures corresponds to said first surface.

8. The system according to claim 7 , wherein
said one or more circuits are further configured to reconstruct at least one surface of said anatomical portion after said deformation,
said at least one surface is reconstructed based on stereo vision for said determination of said surface displacement, and said anatomical portion that is in an opened state during said surgery, and
said reconstructed at least one surface of said anatomical portion after said deformation corresponds to said corresponding second surface.

9. The system according to claim 8 , wherein
said one or more circuits are further configured to register said reconstructed at least one surface of said anatomical portion in said opened state to said 3D structure of said anatomical portion in said unopened state, in a 3D coordinate system, and
said reconstructed at least one surface is registered based on an alignment of bone structure of a skull of a subject, and said anatomical portion that is at least a portion of a brain of said subject.

10. The system according to claim 1 , wherein
said one or more circuits are further configured to measure displacement of voxels associated with said anatomical portion after said deformation with respect to said anatomical portion before said deformation,
said displacement of voxels is measured in a finite element method (FEM) framework,
said displacement of voxels is measured within volume of said anatomical portion,
said volume of said anatomical portion corresponds to entire tissue content of said anatomical portion,
said displacement of voxels is measured based on said determined surface displacement, and
a measurement of said displacement of voxels corresponds to said computation of said volume displacement field.

11. The system according to claim 1 , wherein
said one or more circuits are further configured to generate, to assist during a surgery, a plurality of multi-dimensional graphical views of said anatomical portion after said deformation,
said plurality of multi-dimensional graphical views are generated based on said anatomical portion that is deformed in an opened state,
said generated plurality of multi-dimensional graphical views comprises at least one of at least one displaced region-of-interest in said plurality of surface structures of said anatomical portion or volume displacement within said anatomical portion, and
said volume displacement represents a change in volume after said deformation.

12. The system according to claim 11 , wherein
said plurality of multi-dimensional graphical views corresponds to a plurality of three dimensional views of said anatomical portion, and
said plurality of three dimensional views includes said plurality of surface structures from at least one perspective.

13. A method for surgery assistance, said method comprising:
receiving, by one or more circuits in an electronic device, information related to at least one tissue material property of a plurality of surface structures of an anatomical portion;
receiving, by said one or more circuits, at least one boundary condition associated with a propensity of deformation of said plurality of surface structures of said anatomical portion;
matching, by said one or more circuits, a first surface of said anatomical portion before said deformation of said plurality of surface structures of said anatomical portion directly with a corresponding second surface of said anatomical portion after said deformation;
determining, by said one or more circuits, surface displacement of said anatomical portion based on said matching of said first surface with said corresponding second surface;
computing, by said one or more circuits, volume displacement field of said anatomical portion based on said determined surface displacement, said received information, and said received at least one boundary condition; and
applying, by said one or more circuits, said computed volume displacement field to at least one of said plurality of surface structures for compensation of said deformation in a graphical view of said anatomical portion.

14. The method according to claim 13 , wherein
said anatomical portion corresponds to a portion of a brain, and
said plurality of surface structures corresponds to at least two of cortex, vessels, ventricles, or tumor structure in said anatomical portion of a subject.

15. The method according to claim 13 , wherein said received at least one boundary condition includes at least one of a displaced boundary condition or a stationary boundary condition.

16. The method according to cla

Assignees

• Sony Corp

Inventors

• Yu Liangyin
• Song Bi
• Liu Ming-Chang

Classifications

• G16H30/40

  for processing medical images, e.g. editing · CPC title

• G06T7/33 Primary

  using feature-based methods · CPC title

• G06F18/22

  Matching criteria, e.g. proximity measures · CPC title

• G06F30/00

  Computer-aided design [CAD] · CPC title

• G06T2207/30016

  Brain · CPC title