Blood vessel tracking method and device
A blood vessel and blood vessel model technology, which is applied in the field of image processing, can solve problems such as difficult detection, blurred blood vessel outline, and increased difficulty in matching models and blood vessels, so as to achieve the effect of solving the blurred blood vessel outline
Active Publication Date: 2021-03-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0004] 1. The ubiquitous noise in medical images makes the outline of blood vessels blurred, making it difficult to detect. This effect is more obvious for small blood vessels
[0005] 2. The pathological structures in the blood vessels, such as stenosis and calcification, increase the difficulty of matching the model with the blood vessels
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[0023] 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.
[0024] General vessel segmentation algorithms use manually designed features to locate vessel contours, however, these features are easily affected by abnormal structures such as calcifications, aneurysms, and stents in medical images. In order to overcome the above problems, an embodiment of the present invention provides a blood vessel tracking ...
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An embodiment of the present invention provides a blood vessel tracking method and device, wherein the method includes: specifying a seed point downstream of the current central point in the blood vessel model, and generating a certain number of offset sections according to the seed point, and the offset sections are uniform Distributed on a spherical surface with the seed point as the center of the sphere; each offset section is iteratively updated no greater than the first preset number of times, and the position change of the offset section between two adjacent iterations is calculated, if the position change value If the second consecutive preset times are less than the preset value, the center point in the offset section of the current iteration is taken as a stable point; and the next center point of the blood vessel model is determined according to the distribution of all stable points. The present invention overcomes the problem of inefficiency caused by manual design of features to locate blood vessel contours in the prior art.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of image processing, and more specifically, to a blood vessel tracking method and device. Background technique [0002] For common coronary diseases such as aneurysms, arterial stenosis, and coronary plaques, coronary lumen segmentation is an important step for accurate diagnosis and quantitative treatment. The vessel model is defined as a generalized cylinder constrained by a centerline and radius. [0003] The structural information of three-dimensional blood vessels includes the distribution position of blood vessels, the diameter of blood vessels, the direction of blood flow and bifurcation information, which has important clinical value. It has a wide range of applications in cardiovascular interventional surgery navigation, intraoperative registration and coronary hemodynamic analysis. The manual extraction of 3D vascular structures is a heavy work, and the design of vascular se...
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IPC IPC(8): G06T7/00G06N3/04G06N3/08
CPCG06T7/0012G06T2207/30101
Inventor 杨健艾丹妮范敬凡王涌天赵靖亮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY