A method and device for excision of adhesions based on blood vessel centerline

A central line and adhesion technology, applied in the field of medical imaging, can solve problems such as poor effect and adhesion between blood vessels

Active Publication Date: 2021-02-09
数坤科技股份有限公司
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Problems solved by technology

However, because the topological structure of the head and neck arteries is relatively complex and the distance between blood vessels is sometimes very close, there will often be a large number of adhesions between blood vessels, and the general-purpose adhesion removal method is not effective.

Method used

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  • A method and device for excision of adhesions based on blood vessel centerline
  • A method and device for excision of adhesions based on blood vessel centerline
  • A method and device for excision of adhesions based on blood vessel centerline

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Embodiment 1

[0070] According to an embodiment of the present invention, the adhesion judging factor includes at least one of the following factors: an angle with an adjacent side, a degree of shape matching, and a change rate of a distance transformation value.

[0071]In the embodiment of the present invention, the inventor has concluded the following adhesion judgment factors through in-depth research and continuous practice:

[0072] 1) the angle with the adjacent side;

[0073] Usually glued edges tend to be perpendicular or nearly perpendicular to adjacent edges near the connection point. For example, the angle between the suspected cohesive edge and the adjacent edge can be calculated by the following formula:

[0074] ad_angel=abs(sin(ad_edge, left_edge))+abs(sin(ad_edge, right_edge))

[0075] Among them, ad_angel is the angle between the suspected adhesive edge and the adjacent edge; abs(sin(ad_edge,left_edge)) is the absolute value of the angle between the suspected adhesive ed...

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Abstract

The invention discloses a method and a device for excision of adhesions based on the central line of blood vessels. The method includes: firstly, obtaining the skeletonized result by performing skeletonization processing on the blood vessel segmentation result; then performing graph conversion on the skeletonized result to obtain a graph data structure; and then detecting whether there is a suspected adhesive edge in the graph data structure based on the topology , if it exists, further determine whether the suspected adhesion edge is an adhesion edge according to the local characteristics and combined with the morphological characteristics of the head and neck artery itself, and if so, cut off the adhesion edge and use it. It is not difficult to see that converting the skeletonization result into a graph data structure, and analyzing and testing based on the graph data structure, makes the judgment of the cohesive edge based on a relatively mature theoretical basis, and it is easier to base the relationship between the graph data and A rule filters out suspected adhesions. In this way, it not only simplifies the processing process, but also narrows the investigation scope of adhesion, and further improves the accuracy of judging adhesion.

Description

technical field [0001] The invention relates to the field of medical imaging, in particular to a method and device for excision of adhesions based on the central line of blood vessels. Background technique [0002] Blood vessel centerline extraction is an important link in the automatic analysis of head and neck arteries. The naming and trend judgment of blood vessels must be based on the correct centerline extraction results. The most common way to extract the centerline of blood vessels is to extract the skeleton of the blood vessels first, convert the blood vessels into a single pixel point set along the central axis of the blood vessels, and then convert the skeletonized pixels into a minimum spanning tree, and convert the tree from the root to the The path of the leaf nodes is used as the centerline. However, because the topological structure of the head and neck arteries is relatively complex and the distance between blood vessels is sometimes very close, there will o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/10G06T3/00
CPCG06T3/0012G06T2207/30101G06T7/10
Inventor 葛徐骏
Owner 数坤科技股份有限公司
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