Method for optimizing optimal viewing angle of multiple branch interesting blood vessel section

Abstract

The invention discloses a method for optimizing an optimal viewing angle of a multiple branch interesting blood vessel section, and belongs to the technical filed of coronary angiography. The method for optimizing the optimal viewing angle of the multiple branch interesting blood vessel section includes the following steps: S1, selecting the interesting blood vessel section with a flow direction tracking method, calculating the actual stenosis rate of the interesting blood vessel section, S2, obtaining a projection angle range A in which the projection length-reduction rate is smaller than a set threshold value, S3, projecting angles within A on the interesting blood vessel section in a two-dimensional mode, calculating a stenosis rate value, S4, selecting a stenosis rate value, wherein the difference between the stenosis rate value and the actual stenosis rate value is within a set threshold value range, the corresponding projection angle of the stenosis rate value is range B, S5, seeking out a projection angle range C in which the overlap area of the two-dimensional projection area of the interesting blood vessel section and the two-dimensional projection areas of other blood vessel sections is smaller than a certain threshold value in B, S6, obtaining a hyperplane which can divide interesting blood vessel section branches effectively, and selecting an optimal projection angle, wherein the projection direction of the optimal projection angle is orthogonal to the normal vector of the hyperplane. The optimization method of the optimal viewing angle of the multiple branch interesting blood vessel section can be applied to the projection of the multiple branch interesting blood vessel section.

Description

technical field [0001] The invention relates to an optimal viewing angle optimization method for multi-branch interested vessel segments, which is suitable for important decision-making processes such as clinical diagnosis and treatment plan of vascular diseases, and belongs to the technical field of coronary tree angiography. Background technique [0002] Coronary artery (X-Ray Angiography, XRA) images can clearly show the anatomical structure of the coronary artery, the stenosis location and degree of vascular stenosis, as well as the function of collateral circulation and left ventricle. [0003] Coronary Angiography Artery (CAA) refers to a type of cardiovascular imaging that selectively inserts catheters to the left and right coronary artery openings and injects contrast agents after percutaneous arterial puncture to display coronary anatomy and lesions. method. Coronary angiography is usually referred to simply as coronary angiography. The specific operation method is...

AI Technical Summary

Problems solved by technology

[0011] The current research on the best viewing angle has the above major defects, and it cannot better realize the optimal viewing angle optimization of multi-branched vessel segments of interest.

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