Fast generation method of blood vessel teaching aid based on automatic advancing of bounding box

Abstract

The invention relates to the technical field of medical teaching aids, in particular to a rapid generation method of a blood vessel teaching aid based on automatic advancing of a bounding box, which comprises the following steps of: manually operating to give an initial point and an initial direction vector on original three-dimensional data, and establishing the bounding box by using the initial point and the initial direction vector; performing offset rotation calculation through the initial point and the initial direction vector to obtain the range of the bounding box; based on the range, six surfaces of the bounding box are cut out through a slicing algorithm; solving a blood vessel outlet based on the six surfaces and the blood vessel inlet, and making direction vectors by using the blood vessel inlet and the blood vessel outlet to obtain a known direction vector; re-establishing a bounding box by using a blood vessel outlet and a known direction vector until a point data group is obtained; fitting the point data set through a spline to obtain a blood vessel center line; the blood vessel teaching aid is obtained by performing blood vessel reconstruction and generation based on the blood vessel center line, and the problem that an existing center line extraction method for a blood vessel tree depends on user interaction is solved.

Description

technical field [0001] The invention relates to the technical field of medical teaching aids, in particular to a method for rapidly generating blood vessel teaching aids based on bounding boxes that travel automatically. Background technique [0002] Blood vessels have a complex three-dimensional structure with numerous and complex branches. Individual differences in the vascular system are large, each person's vascular structure is unique, and vascular lesions cause more serious morphological specificity. It is very difficult to make a true and accurate vascular teaching aid. [0003] At present, the prior art discloses a centerline extraction method for a blood vessel tree. In this solution, the user interactively selects and calculates the centerline of each branch and finally merges to obtain a complete centerline, reconstructs the blood vessel through the centerline, and finally produces the blood vessel. Teaching aids. [0004] With the above method, a large number ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rapid generation method of vascular teaching aids based on bounding box automatic travel, aiming to solve the problem that the existing centerline extraction method for vascular trees relies on user interaction

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