Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Brain cortex surface maximum principal direction field diffusion method for three-dimensional brain magnetic resonance image

A magnetic resonance image and cerebral cortex technology, applied in the field of medical image processing, can solve problems such as inferior local optimum, and achieve the effect of precise geometric structure, good geometric structure and discontinuity

Inactive Publication Date: 2012-02-01
JIANGSU SHUANGNENG SOLAR ENERGY +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing maximum principal direction field diffusion method on the surface of the cerebral cortex has the following main defects: First, the weights of different cortical surface regions are set to be the same, resulting in the diffuse maximum principal direction field being too smooth at the bottom of the brain sulci and the top of the gyrus
Second, the current energy minimization method is prone to fall into poor local optimum

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Brain cortex surface maximum principal direction field diffusion method for three-dimensional brain magnetic resonance image
  • Brain cortex surface maximum principal direction field diffusion method for three-dimensional brain magnetic resonance image
  • Brain cortex surface maximum principal direction field diffusion method for three-dimensional brain magnetic resonance image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will now be further described in conjunction with the embodiments and accompanying drawings:

[0037] According to the maximum principal direction field diffusion method on the surface of the cerebral cortex based on the graph cut method proposed by the present invention, we have implemented a prototype system of the method in C++ language. The source of the image data is: three-dimensional brain magnetic resonance images of a normal person in practice.

[0038] The specific implementation steps are as follows:

[0039] 1. Preprocessing and reconstruction of the cerebral cortex surface:

[0040] Deformation model method is used to remove the brain case, registration method is used to remove non-brain tissue, Gaussian mixture model and Markov random field method are used to segment the image, and images represented by three tissue types of white matter, gray matter and cerebrospinal fluid are obtained. A graph-based method for topological correcti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a three-dimensional brain magnetic resonance image brain cortex surface maximum principal direction field diffusion method, which has the technical scheme that the method comprises the following steps: carrying out pretreatment and brain cortex surface reconstruction on three-dimensional brain magnetic resonance images; calculating the principal curvature, the principal direction and the differential coefficient of the principal curvature of a peak on the brain cortex surface; using an alpha-expansion graph cut method for minimizing an energy function to carry out diffusion on the maximum principal direction field; and projecting the diffused maximum principal direction field into a tangent plane. The invention has the advantages that: 1. the method sets the weights of smooth items and data items in different regions on the brain cortex surface into different values, so the inherent geometrical structure and discontinuity in the maximum principal direction field can be perfectly maintained; and 2. the principal direction field diffusion is regarded as an energy minimization problem which is converted into a diffusion marking problem, and the alpha-expansion graph cut method can be used for effectively working out the strong local optimum solution of the energy function.

Description

technical field [0001] The invention relates to a maximum principal direction field diffusion method on the cerebral cortex surface of a three-dimensional brain magnetic resonance image, and a method for the maximum principal direction field diffusion on the cerebral cortex surface of a three-dimensional brain magnetic resonance image using the alpha-expansion graph cuts method, which belongs to field of medical image processing. Background technique [0002] The surface of the cerebral cortex reconstructed from 3D brain magnetic resonance images is a 2D flow pattern embedded in 3D space, extremely curled and folded. Analysis based on the cerebral cortex surface is very suitable for characterizing and analyzing the essential structure of the cerebral cortex, such as curvature, geodesic distance, cortical thickness, etc. The orientation field on the surface of the cerebral cortex contains important information, for example, the maximum principal orientation field and the min...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00A61B5/055
Inventor 郭雷李刚聂晶鑫赵天云韩军伟胡新韬
Owner JIANGSU SHUANGNENG SOLAR ENERGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com