Adhesion cutting method and device based on blood vessel center line

A centerline and adhesion technology, applied in the field of medical imaging, can solve the problems of intervascular adhesion and poor effect, etc.

Active Publication Date: 2020-10-02
数坤(北京)网络科技股份有限公司
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  • Claims
  • Application Information

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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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  • Adhesion cutting method and device based on blood vessel center line
  • Adhesion cutting method and device based on blood vessel center line
  • Adhesion cutting method and device based on blood vessel center line

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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 an adhesion cutting method and device based on a blood vessel center line. The method comprises the following steps: firstly, performing skeletonization processing on a blood vessel segmentation result to obtain a skeletonization result; performing graphic conversion on the skeletonization result to obtain a graphic data structure; and then, based on the topological structure, detecting whether a suspected adhesive edge exists in the graphic data structure, if so, further determining whether the suspected adhesive edge is an adhesive edge according to the local characteristics and the morphological characteristics of the head and neck arteries, and if so, cutting off the adhesive edge for utilization. It is not difficult to see that the skeletonization result is converted into a graphic data structure, analysis and detection are conducted based on the graphic data structure, judgment of the adhesion edge is established on the basis of a mature theoretical basis,and suspected adhesion can be screened out more easily according to the incidence relation of graphic data and a certain rule. Thus, not only is the processing process simplified, but also the checking range of adhesion is reduced, and the accuracy of adhesion judgment is further improved.

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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IPC IPC(8): G06T7/10G06T3/00
CPCG06T7/10G06T2207/30101G06T3/04
Inventor 葛徐骏
Owner 数坤(北京)网络科技股份有限公司
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