Image simulation method for intracranial aneurysm interventional therapy stent implantation

Abstract

The invention provides a visualization calculation method for a whole intracranial aneurysm interventional therapy stent implantation process, establishes a stent release expansion model, provides an effective numerical simulation method for the intracranial aneurysm interventional therapy stent implantation, and provides a visualization method used for detection, calculation and analysis of the surgical planning of intracranial aneurysm interventional therapy. The adopted technical scheme is as follows: firstly, a blood vessel centerline is utilized to implant a numerical simulation stent into the blood vessel, and an active contour model is utilized to perform stent expansion, then the distance of each two nodes of the stent is changeless through optimization, and finally hemodynamics calculation and analysis are performed, and optimal configuration for stent implantation is simulated and calculated. The image simulation method can be directly applied to three-dimensional vascular angiography tomographic images, enables the stent to keep own geometric morphological characters through optimization, and can utilize weight adjustment to enable the stent to be clung to the blood vessel wall as far as possible. The simulation process can control the stent implantation position conveniently, and better clinical application value is achieved in the surgical planning of interventional therapy.

Description

technical field [0001] The invention belongs to the field of image simulation calculation method for intracranial aneurysm interventional treatment stent implantation operation planning, and is applied to the operation planning and operation guidance of this type of operation. [0002] The invention relates to a visualization calculation method for the whole process of stent implantation for intracranial aneurysm interventional therapy. It provides a visual method of detection, calculation and analysis for the surgical planning of intracranial aneurysm interventional treatment. Background technique [0003] Intracranial aneurysm (intracranial aneurysm) is a tumor-like protrusion on the arterial wall caused by abnormal expansion of the lumen of the intracranial artery, and is a common vascular disease. According to the latest research report of Mayo Clinic in 2009, the prevalence of unruptured aneurysms in the population is about 2%, and the annual incidence of subarachnoid ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned deformable scaffold simulation method has the following disadvantages: (1) a large amount of optimization and grid processing are required for the initial image; (2) for the embossed scaffolds such as silk, the incompressibility and expansion of each node cannot be guaranteed geometric features

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