Image simulation method for intracranial aneurysm interventional therapy stent implantation

A technology for intracranial aneurysm and interventional therapy, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as incompressible and expandable geometric features, and achieve good clinical application value

Inactive Publication Date: 2013-07-10
CAPITAL UNIVERSITY OF MEDICAL SCIENCES
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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 ...

Method used

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  • Image simulation method for intracranial aneurysm interventional therapy stent implantation
  • Image simulation method for intracranial aneurysm interventional therapy stent implantation
  • Image simulation method for intracranial aneurysm interventional therapy stent implantation

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0025] (1) Three-dimensional angiography data acquisition:

[0026] Tomographic images of intracranial aneurysms were obtained by digital subtraction angiography (DSA).

[0027] (2) Extraction of the centerline of the aneurysm parent vessel:

[0028] The 3D active contour model is used to refine the aneurysm parent vessel to obtain the centerline of the vessel. The specific method is to use independent surface extraction on the DSA image of the intracranial aneurysm, extract the meshed vessel wall as the initial contour, and use the active contour model as the initial contour. Constraint conditions, the specific energy equation is as follows:

[0029] ∫ n Σ i = 1 2 ( α ( ▿ v ( i ...

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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 ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李海云刘迪龙云玲杨新健
Owner CAPITAL UNIVERSITY OF MEDICAL SCIENCES
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