Pulmonary CT image airway three-dimensional skeleton dendritical structure extracting and marking method

Abstract

The invention provides a pulmonary CT image airway three-dimensional skeleton dendritical structure extracting and marking method. The method comprises the steps that a three-dimensional seed growth method is used to acquire a tracheal tree three-dimensional model in a pulmonary CT image; morphological closed operation is used to preprocess the tracheal tree three-dimensional model; pulmonary tracheal tree skeleton points in the tracheal tree three-dimensional model are extracted through an improved topological refinement method; a pulmonary tracheal tree skeleton dendritical structure is extracted through a multi-fork number extraction method; and grading marking is carried out on the pulmonary tracheal tree skeleton dendritical structure. According to the method provided by the invention, when the pulmonary tracheal tree skeleton of a human body is extracted, the topological refinement method is used and improved on the basis of the method; a corresponding solution is provided according to a special situation in a human pulmonary tracheal tree segmentation image; the algorithm practicality is improved; the idea of multi-fork tree traversal is used to extract the pulmonary tracheal tree dendritical structure of the human body, and at the same time the dendritical structure is graded; and the method laids the foundation for the quantitative analysis of the human pulmonary tracheal tree.

Description

technical field [0001] The invention belongs to the technical field of pattern recognition, and in particular relates to a method for extracting and marking a three-dimensional skeleton tree structure of an airway in a lung CT image. Background technique [0002] The tomographic images of the lungs obtained by a computed tomography (CT) scanner contain a large amount of information that can reflect the intrinsic pathophysiology of lung diseases. , the three-dimensional tree network structure formed by the pulmonary airway tree is very complex, so it is difficult to directly observe and analyze the bronchi, resulting in a very limited understanding of the pulmonary airway tree. As a one-dimensional tree structure, the skeleton can provide guidance for the orderly traversal of the whole lung trachea. At the same time, it can also provide quantitative information of each bronchus, and it is easier to obtain the characteristics of high-order bronchus, so as to provide a basis fo...

AI Technical Summary

Problems solved by technology

[0004] Judging from the current research, there are many methods for extracting the airway tree skeleton of the lungs, and the airway tree skeleton has been successfully extracted, but these studies have not proved the correctness of the method used, nor have they verified the accuracy of the skeleton

In the tree structure generation process, there is no mention of special case handling

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