Intracranial aneurysm virtual stent diagnosis and treatment system and method thereof

Abstract

The invention provides an intracranial aneurysm virtual stent diagnosis and treatment system and a method thereof. The system comprises a preoperative vascular model and virtual stent initialization model acquisition module which is used for three-dimensional vascular model reconstruction and model smoothing, automatic centerline extraction, and stent model initialization, a virtual stent algorithm execution module which is used for simplex mesh conversion of a virtual stent and preoperative vascular model, virtual stent deployment, vascular wall contact detection and force balance determination, and a surgical plan evaluation module which uses morphological parameters and hemodynamic function parameters to evaluate the effectiveness of a surgical plan developed by a doctor before a surgery. According to the invention, a virtual stent technology based on Simplex mesh is used to simulate the deployment and placement of a stent in an intracranial artery, which ensures the deployment speed of the virtual stent on the basis of ensuring accuracy; the intracranial aneurysm virtual stent diagnosis and treatment system with timeliness and accuracy is built; and guidance is provided for thepreoperative plan planning of intracranial aneurysms.

Description

technical field [0001] The invention relates to the fields of biomedical engineering and computer science, in particular to an intracranial aneurysm virtual stent diagnosis and treatment system and a diagnosis and treatment method thereof. Background technique [0002] Intracranial aneurysm is a disease of pathological expansion of arteries caused by brittle vessel walls. The incidence of intracranial aneurysms is relatively high, and more than 30% of patients have more than one aneurysm. The difficulty of treatment is extremely high, and the risk of rupture is high, threatening the life safety of patients at all times. At present, endovascular repair has become a relatively mainstream treatment method in the treatment of aneurysms. Intracranial stents are often used to block the aneurysm opening and reduce blood perfusion in the aneurysm, but the treatment effect depends largely on the choice of the stent, including the size, shape, and location of the stent. Secondly, st...

AI Technical Summary

Problems solved by technology

[0003] For the simulation deployment of virtual stents, many studies focus on the interaction force between the stent and the vessel wall during the stent deployment process, and the prediction of blood flow in the vessel after the stent is placed, so most scholars choose to use the finite element analysis method , pay attention to the specific shape changes of the stent and the local tension of each metal grid, and obtain the calculation information of blood flow through hemodynamic analysis. Although this method can obtain the details of stent deployment, its accuracy and effectiveness have also been recognized. However, this method consumes a lot of computing time and computing data resources, and cannot provide real-time guidance for clinical practice.

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