Fast-marching fiber tracking method based on topology preservation

A fiber and topology technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of indistinct fiber orientation and multiple false positive branches, and achieve good noise robustness and false positive branches. Reduced, effect of good topology

Active Publication Date: 2010-10-27
苏州盛泽科技创业园发展有限公司
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Problems solved by technology

[0006] Aiming at the problems that the Fast Marching (FM) algorithm based on global energy minimization has many false positive bran

Method used

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  • Fast-marching fiber tracking method based on topology preservation
  • Fast-marching fiber tracking method based on topology preservation
  • Fast-marching fiber tracking method based on topology preservation

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Embodiment Construction

[0027] see figure 1 In view of the problems existing in the fast-traveling fiber tracking method, the present invention provides a topology-preserving fast-traveling fiber tracking method, including the following aspects:

[0028] A. DTI data processing

[0029] B. Seed point selection and initialization

[0030] C. Topology-preserving surface evolution using a curvature-weighted velocity function

[0031] D. Determine all paths using the time gradient descent method

[0032] E. Use the connectivity matrix to select real fiber paths

[0033] see figure 2 , the following will introduce in detail the topology-preserving fast-travel fiber tracking method of the present invention and how to use it to realize fiber tracking.

[0034] ·DTI data processing

[0035] Read pictures and organize them into three-dimensional data. During the imaging process, due to electronic interference and the influence of the external environment, medical images often contain noise, so filters a...

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Abstract

The invention belongs to the field of resonance diffusion imaging, in particular to a fast-marching fiber tracking method based on topology preservation, comprising the steps of: reading DTI (Diffusion Tensor Imaging) data; manually selecting a seed point and initializing; evoluting from the seed point to peripheral neighbor points by using a fast-marching method and adopting a curvature weighting speed function, recording topology information in an evolution process, i.e. a source node of each evoluting point; calculating all paths by adopting a time gradient descent method; and selecting a real fiber path by a link matrix. The invention has the advantages of more according with the real fiber path by fiber tracking and reducing urious positive branches; and the obtained fiber is smooth and better reflects the fiber direction.

Description

technical field [0001] The invention belongs to the field of magnetic resonance diffusion tensor imaging, and relates to a topology-preserving fast-moving fiber tracking method. Background technique [0002] Diffusion tensor imaging (DTI) is a new non-invasive imaging method developed on the basis of magnetic resonance imaging (MRI). It uses the anisotropy of free thermal motion of water molecules in tissues to detect the microstructure of tissues. To achieve the purpose of studying human body function. At present, diffusion tensor imaging is the only non-invasive imaging method that can display white matter fiber bundles in vivo. It makes it possible to evaluate the tissue structure and connectivity of white matter fiber bundles, and has incomparable advantages over general MRI examinations. Neuroimaging opens up new and vast vistas. [0003] In recent years, an important progress in DTI research is to apply it to the visualization of white matter fibers, and fiber tracki...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张怡张加万张胜平米博会
Owner 苏州盛泽科技创业园发展有限公司
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