Vascular angiography three-dimensional rebuilding method under dynamic model direction

Abstract

The present invention provides a dynamic model directed angiography three-dimensional reconstruction method, pertaining to an intersectional field of digital image processing and medicine imaging, for satisfying special requests of auxiliary detection and surgery guidance for cardiovascular disease in clinical medicine. The invention includes steps of angiography image preprocessing, vascellum segmentation, vascellum skeleton and radii extraction, model directed vascellum base element recognition, vascellum matching and vascellum three-dimensional reconstruction. The invention also provides a cardiovascular dynamic model construction method including steps of cardiovascular slice data extraction, cordis static and dynamic model building, and static and dynamic model building. According to the invention, good angiography three-dimensional reconstruction result may be obtained, which effectively assists detection and surgery guidance for cardiovascular disease, thereby satisfying clinical requests.

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...

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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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