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Method and device for simulating expansion of virtual support in blood vessel, and electronic equipment

A simulation method and vascular model technology, applied in medical simulation, electrical digital data processing, computer-aided design, etc., can solve problems such as inability to monitor stent expansion, simulation results are not realistic and reliable, and there is no simulation interaction process

Inactive Publication Date: 2018-05-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing virtual stent expansion algorithm is mainly based on the simplex mesh deformation model or the active contour model, which is used for intracranial aneurysms. The intracranial stent mainly plays a role of diversion. During the simulation, the interaction process between the stent and the blood vessel was not simulated, so the expansion of the stent in the blood vessel could not be monitored, and the expansion process could not be displayed, and the simulation results were not realistic enough.

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  • Method and device for simulating expansion of virtual support in blood vessel, and electronic equipment
  • Method and device for simulating expansion of virtual support in blood vessel, and electronic equipment
  • Method and device for simulating expansion of virtual support in blood vessel, and electronic equipment

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Embodiment 1

[0037] For TEVAR, due to the great individual differences of patients, it is necessary to make a detailed, effective and time-sensitive preoperative planning. Therefore, a fast simulation method that can simulate the interaction between the stent and the aorta during expansion becomes necessary. In this embodiment, the three-dimensional geometric model of the aorta is reconstructed to obtain the blood vessel model, and the corresponding stent model is generated in the blood vessel model. Based on the blood vessel model and the stent model, the implanted stent can expand and support the collapsed blood vessel in the blood vessel cavity. The whole process is displayed. In this example, the force of the stent during the stent expansion process, the interaction force between the stent and the blood vessel, and the spatial shape changes of the blood vessel and the stent before and after stent expansion are simulated and calculated, and the stent can be quickly displayed for the doc...

Embodiment 2

[0102] Corresponding to the method of the first embodiment above, this embodiment also provides a simulation device for the expansion of a virtual stent in a blood vessel, such as Figure 10 As shown, the device includes:

[0103] The model acquisition module 41 is used to acquire the current vessel model and the stent model; wherein, the vessel model includes the spatial position of each vessel node; the support model is generated centering on the centerline of the vessel model, and includes the spatial position of each support node;

[0104] The internal force calculation module 42 is used to calculate the expansion internal force value of the support node according to the spatial position of the support node for each support node;

[0105] The contact judgment module 43 is used to determine whether the virtual stent corresponding to the stent model touches the vessel wall of the vascular model according to the spatial position of the stent node and the spatial position of t...

Embodiment 3

[0111] see Figure 11 , the embodiment of the present invention also provides an electronic device 100, including: a processor 50, a memory 51, a bus 52 and a communication interface 53, the processor 50, the communication interface 53 and the memory 51 are connected through the bus 52; Executable modules, such as computer programs, stored in the execution memory 51 .

[0112] Wherein, the memory 51 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 53 (which may be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used.

[0113] The bus 52 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into address bus, data b...

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Abstract

The invention provides a method and device for simulating the expansion of virtual support in blood vessel, and electronic equipment. The method comprises the steps: obtaining a current blood vessel model and a support model; calculating and obtaining an expansion internal force withstood by each support node of the support model; judging whether the virtual support corresponding to the support model makes contact with the blood vessel wall of the blood vessel model or not; updating the spatial position of the support nodes according to the expansion internal forces if the virtual support corresponding to the support model does not make contact with the blood vessel wall of the blood vessel model; calculating and obtaining compression external forces withstood by the support nodes if the virtual support corresponding to the support model makes contact with the blood vessel wall of the blood vessel model, and updating the spatial positions of the support nodes and the spatial position of the blood vessel nodes according to the expansion internal forces and the compression external forces; outputting the updated blood vessel model and support model as the simulation result when the expansion internal forces and the compression external forces are balanced. Therefore, the method achieves the real-time monitoring of the expansion conditions of the support in the blood vessel, can achieve the three-dimensional display of an expansion process, and enables the simulation result to be more real and reliable.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method, device and electronic equipment for simulating the expansion of a virtual stent in a blood vessel. Background technique [0002] The relatively high-risk diseases in cardiovascular diseases occur not far from the heart, so the aorta is a place where high-risk cardiovascular diseases are prone to occur. Among them, high-risk cardiovascular diseases mainly include dissection, intramural hematoma and thoracic aorta tumor. For this kind of disease, there are two main treatment methods in the past, one is to reduce blood pressure through drug treatment, and the other is to perform thoracotomy. Drug treatment is relatively conservative, while open surgery is not only risky and has a low resignation rate, it is also prone to complications and difficult to recover after surgery. Therefore, at present, the most commonly used and most effective method for this type of...

Claims

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Application Information

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IPC IPC(8): G16H50/50G06F17/50
CPCG06F30/23G06F2119/06
Inventor 陈端端韦建雍熊江韩晓峰刘明远闫天翼
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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