Method for establishing three-dimensional geometrical structure of dog left ventricle conduction system based on local linear embedding method

A technology of local linear embedding and conduction system, which is applied in the directions of sensors, 3D modeling, computer components, etc.

Inactive Publication Date: 2010-02-17
HARBIN INST OF TECH
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Problems solved by technology

[0013] However, there is a large deviation between the existing ventricular conduction system model and the real geometry, and further research on electrophysiological activities such as ventricular excitatory conduction still requires a lot of effort

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  • Method for establishing three-dimensional geometrical structure of dog left ventricle conduction system based on local linear embedding method
  • Method for establishing three-dimensional geometrical structure of dog left ventricle conduction system based on local linear embedding method
  • Method for establishing three-dimensional geometrical structure of dog left ventricle conduction system based on local linear embedding method

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Embodiment Construction

[0054] combined with Figure 1-12 And embodiment, the present invention is described further:

[0055] 1. Carry out isolated animal experiments, and treat the dog's left ventricle with special imaging technology, so that the linear structure of the internal ventricular conduction system can be seen with the naked eye (such as image 3 shown).

[0056] To prepare for the following mapping, select a line that can be found in the mapped two-dimensional data map or select some points with features in position or shape. These feature points and the corresponding points in the ventricular endocardium must be prepared. Mark, so that in the following steps, during the mutual mapping between the curved surface and the plane, the linear structure of the ventricular conduction system can be located.

[0057] 2. Extract the linear graph of the ventricular conduction system in step 1, that is, the data points of the left bundle branch and Purkinje fibers, and this point set is recorded a...

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Abstract

The invention relates to a method for establishing a three-dimensional geometrical structure of a dog left ventricle conduction system based on a local linear embedding method, in particular to a method for mapping a plane image into a curved surface image. The method comprises the following steps to complete a ventricle conduction system: firstly, mapping dog left ventricle three-dimensional geometrical configuration to a plane by an LLE algorithm, and recording as a two-dimensional linear graph of the ventricle conduction system; then, extracting the conduction system in a two-dimensional graph of a real ventricle conduction system, and integrating the conduction system into a new graph; and finally, mapping the integrated new graph to the left ventricle three-dimensional geometrical configuration by using the LLE algorithm again so as to obtain the three-dimensional geometrical structure of the left ventricle conduction system. The invention retains the local linear characteristic of a space structure, has the characteristics of high efficiency and speed and uses real data to reflect the real dog left ventricle conduction system.

Description

technical field [0001] The invention relates to a method for mapping a plane image into a curved image, in particular to a method for constructing a three-dimensional geometric structure of a dog's left ventricular conduction system based on a local linear embedding method. Background technique [0002] Both the ventricular conduction system and ordinary cardiomyocytes conduct. In the ventricle, the normal conduction of excitation depends mainly on the ventricular conduction system. The conduction system includes: left and right bundle branches and Purkinje fibers, including left bundle branches and Purkinje fibers in the part of the left ventricle. It is located in the intimal layer of the ventricle and is invisible to the naked eye. Since the diameter of the thinner part of Purkinje fibers is close to 5 μm, it is difficult to obtain data that can reflect its geometric structure with tomography or nuclear magnetic resonance. At present, the commonly used methods in the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00A61B5/00G06V10/10
CPCG06K9/20G06V10/10
Inventor 王宽全黎捷左旺孟袁永峰张恒贵
Owner HARBIN INST OF TECH
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