High-precision semi-automatic blood vessel 3D reconstruction algorithm based on CT image

Abstract

The invention discloses a high-precision semi-automatic blood vessel 3D reconstruction algorithm based on a CT image. The algorithm comprises the following steps: S1, creating a blood vessel CT image sequence; s2, adopting a high-precision labeling method to label a certain layer of the single or multiple blood vessels according to the created CT image sequence; s3, the mass center distance xyDist, the offset xyXaxis of the x axis and the offset xyYaxis of the y axis between the CT films of all the layers are calculated under the selected catalog, wherein the mass center distance xyDist, the offset xyXaxis of the x axis and the offset xyYaxis of the y axis are calculated; and S4, sorting xyDist, xyXaxis and xyYaxis from large to small, and carrying out sheet insertion processing on the CT sheets with the maximum deviation value. The blood vessel is subjected to 3D reconstruction by adopting a high-precision labeling method and a manual CT insertion algorithm, so that the 3D reconstruction precision of the blood vessel is remarkably improved, the accuracy of judging a focus part of a patient by medical personnel according to the 3D reconstruction of the blood vessel is greatly improved, the disease of the patient can be diagnosed in an auxiliary manner, and meanwhile, the medical personnel can conveniently carry out 3D reconstruction on the blood vessel. The family members of the patient can visually know the physical condition of the patient, and the doctor-patient relationship is improved.

Description

technical field [0001] The invention belongs to the technical field of biomedical image processing, in particular to a high-precision semi-automatic blood vessel 3D reconstruction algorithm based on CT images. Background technique [0002] Three-dimensional reconstruction of medical images is an interdisciplinary field of research. Based on the two-dimensional slice sequence obtained clinically, the human tissue represented by the two-dimensional slice is displayed in a three-dimensional manner by using computer technology and graphic imaging technology. The reconstructed model can conduct multi-angle and multi-level observation of the patient's tissue, and even obtain an accurate and intuitive understanding of the size, location, and shape of the lesion, so as to make an accurate diagnosis. Among them, the 3D reconstruction of blood vessels is based on two-dimensional reconstruction. The process of establishing a three-dimensional model of vascular tissue by slice sequence....

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Problems solved by technology

[0003] At present, the common 3D reconstruction of blood vessels mainly adopts automatic modeling for modeling, and the 3D model of blood vessels is automatically generated by sending the corresponding two-dimensional slice sequence of blood vessels to the modeling system. This method does not take into account the actual blood vessel conditions of the patient. The generated vascular 3D model has poor accuracy, making the actual reference value of the vascular 3D model low

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