Method of using recurrence plot to rebuild bifurcated blood vessel surface in combination of curvature features

Abstract

The invention discloses a method of using a recurrence plot to rebuild a bifurcated blood vessel surface in combination of curvature features. The method comprises steps: an algebraic expression for asingle-branch blood vessel skeleton line is acquired, and in combination of curvature features of the curve, the skeleton line is sampled; a cross section is obtained based on a normal vector of a sampling point on the curve, and contour points on the section are fit to obtain a contour line; a recurrence plot method is adopted to interpolate the contour line to obtain a complete contour line oneach single branch; different branches are joined in a bifurcated area to obtain a complete contour line of the whole blood vessel; corresponding points on the contour line are joined by using a triangular facet to build a blood vessel surface; a Loop subdivision method is selected to further subdivide the blood vessel surface to enable the rebuilt surface to be more smooth. The method combines the curvature features for sampling, and the sampling density is reduced; the recurrence plot method is adopted for contour interpolation, the rebuilt blood vessel model is more vivid, the amount of computation is reduced, the rebuilding efficiency is improved, the rebuilt blood vessel model has reconfigurability, and a basis is laid for building a functional blood vessel model by introducing physical properties.

Description

technical field [0001] The invention relates to the technical fields of biomedical engineering and computer vision, in particular to a method for reconstructing the surface of bifurcated blood vessels with a recursive map combined with curvature features. Background technique [0002] The three-dimensional modeling of vascular structure is of great significance and wide application value for clinical diagnosis of vascular diseases, virtual surgery, prediction of disease progression, improvement of reliability of preoperative planning and success rate of surgery, clinical anatomy teaching, pathological research, etc. According to whether the 3D modeling process is based on model assumptions, vascular modeling techniques can be divided into two types: model-based methods and model-based methods. Based on the model-free method, the surface is directly constructed through the voxels of the blood vessel boundary. Common methods include Marching Cubes and MPU methods. Model-based...

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Problems solved by technology

[0004] The model-based method also has its own shortcomings. On the one hand, the reconstruction of the vessel surface cannot accurately reflect the curvature change of the vessel; It is more complicated to deal with, and the amount of calculation is relatively large

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