Vascular angiography three-dimensional rebuilding method under dynamic model direction

Abstract

The three-dimensional reconstruction method of angiography guided by dynamic model belongs to the intersection field of digital image processing and medical imaging, and its purpose is to meet the special requirements of auxiliary detection of cardiovascular diseases and surgical navigation in clinical medicine in my country. The invention includes the steps of contrast image preprocessing, blood vessel segmentation, blood vessel skeleton and radius extraction, model-guided blood vessel primitive identification, blood vessel matching and blood vessel three-dimensional reconstruction steps. The present invention also provides a method for establishing a dynamic cardiovascular model, which includes the steps of extracting cardiovascular slice data, the steps of static and dynamic modeling of the heart, and the steps of static and dynamic modeling of the cardiovascular system. The invention can obtain good three-dimensional reconstruction results of angiography, effectively assists the detection and operation navigation of cardiovascular diseases, and meets the clinical requirements.

Description

technical field [0001] The invention belongs to the intersection field of digital image processing and medical imaging, and in particular relates to a three-dimensional reconstruction method of angiography under the guidance of a dynamic model. This method can solve the problem of reliable automatic three-dimensional reconstruction from multi-view angiography images, and meets the application requirements of clinical medical cardiovascular disease auxiliary detection and surgical navigation. Background technique [0002] The three-dimensional reconstruction of the vascular tree is a process of recovering the three-dimensional space structure of the blood vessel through the corresponding image information in the X-ray two-dimensional projection images from different angles of view. It is very different from the 3D reconstruction of ordinary visible light images. X-ray imaging is the image formed on the fluorescent screen after the X-rays projected on the human body are atten...

AI Technical Summary

Problems solved by technology

But there are two problems in this way: (1) How to judge whether the two contrast images are at the same moment in a cardiac cycle

Relatively speaking, the Snake model can obtain higher precision, but the construction of internal force and external force functions is relatively difficult; the method of spline fitting is relatively simple, but it requires a large amount of calculation to improve the accuracy

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