Multi-angle DSA contrast image blood vessel matching method and device
A technology of contrast-enhanced images and matching methods, applied in the field of image processing, which can solve the problems of large gaps in vascular shapes, inability to accurately achieve vascular matching, and difficult matching of vascular structures, and achieve the effect of accurate node correspondence
Active Publication Date: 2021-09-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0002] The matching of vascular structures can help doctors diagnose and treat lesions. Therefore, it is of great significance to achieve vascular structure matching from different perspectives. However, the gray scale of blood vessels in angiography images is uneven, and the occurrence of fractures and stenosis makes the matching of vascular structures a problem. extremely difficult task
[0003] When the existing matching methods are directly applied to contrast images from different angles, it is almost impossible to achieve accurate matching. The main reason is that there is a large difference in the shape of blood vessels in contrast images from different angles, and at the same time, the extracted features are not robust, so it is impossible to accurately match blood vessels.
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[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0022] figure 1 It is a schematic flow chart of a multi-angle DSA contrast image blood vessel matching method according to an embodiment of the present invention, as shown in figure 1 As shown, including S101, S102 and S103, specifically:
[0023] S101. Project the three-dimensional blood vessel image from two different angles to obtain two two-...
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An embodiment of the present invention provides a multi-angle DSA contrast image blood vessel matching method and device, wherein the method includes: projecting a three-dimensional blood vessel image from two different angles to obtain two two-dimensional blood vessel images, and combining the two two-dimensional blood vessel images with The three-dimensional blood vessel images are registered separately; the similarity of the nodes in the three-dimensional blood vessel image and any pair of two-dimensional blood vessel images and the similarity of the blood vessel branches are calculated, and input into the pre-built image matching framework to obtain the three-dimensional blood vessel image and all Describe the node matching relationship of any two-dimensional blood vessel image; determine the node matching relationship between the two two-dimensional blood vessel images according to the node matching relationship between the three-dimensional blood vessel image and the arbitrary two-dimensional blood vessel image. In the embodiment of the present invention, the judgment of angiographic images is more accurate.
Description
technical field [0001] The present invention relates to the technical field of image processing, and more specifically, to a multi-angle DSA (Digital subtractionangiography) angiography image blood vessel matching method and device. Background technique [0002] The matching of vascular structures can help doctors diagnose and treat lesions. Therefore, it is of great significance to achieve vascular structure matching from different perspectives. However, the gray scale of blood vessels in angiography images is uneven, and the occurrence of fractures and stenosis makes the matching of vascular structures a problem. Extremely difficult task. [0003] When the existing matching methods are directly applied to contrast images from different angles, it is almost impossible to achieve accurate matching. The main reason is that the morphology of blood vessels in contrast images from different angles is quite different, and the extracted features are not robust, so it is impossible...
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IPC IPC(8): G06T7/33G06T7/62G06K9/62
CPCG06T7/337G06T7/62G06T2207/30101G06T2207/10121G06V10/757G06F18/22
Inventor 范敬凡杨健朱建军王涌天杨琪
Owner BEIJING INSTITUTE OF TECHNOLOGYGY