Blood vessel tracking method and device
A blood vessel and blood vessel model technology, applied in the field of image processing, can solve the problems of difficulty in detection, stenosis, increase the difficulty of matching the model and blood vessel, etc., and achieve the effect of solving the blurred outline of blood vessels
Active Publication Date: 2019-07-09
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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The embodiment of the invention provides a blood vessel tracking method and device, and the method comprises the steps: specifying a seed point at the downstream of a current central point in a bloodvessel model, generating a certain number of offset cross sections according to the seed point, and enabling the offset cross sections to be uniformly distributed on a spherical surface with the seedpoint as a sphere center; iteratively updating each offset cross section for no more than a first preset number of times, calculating the position change of the offset cross section of two adjacent iterations, and if the position change value is continuously smaller than a preset value for a second preset number of times, taking the central point in the offset cross section of the current iteration as a stable point; and determining the next central point in the blood vessel model according to the distribution condition of all the stable points. According to the method, the problem of low efficiency caused by manually designed feature positioning blood vessel contours in the prior art is solved.
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): G06T7/00
CPCG06T7/0012G06T2207/30101
Inventor 杨健艾丹妮范敬凡王涌天赵靖亮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY