Method and device for simulating diffusion process of contrast agent

Abstract

The invention provides a method and device for simulating a diffusion process of a contrast agent. The method comprises steps as follows: a three-dimensional blood vessel model is built according to a blood vessel CT scanning image; the three-dimensional blood vessel model is pre-processed; the pre-processed model is rendered to a screen, and particles are initialized; the three-dimensional blood vessel model rendered to the screen and the initialized particles are subjected to collision detection, the action force of the three-dimensional blood vessel model on the particles is calculated according to a collision detection result to obtain external force; internal force among the initialized particles is calculated according to smoothed particle hydrodynamics; the state of the particles in the three-dimensional blood vessel model rendered to the screen is updated and rendered to the screen. The method and device solve the technical problems of large calculation amount, difficulty in acquisition of parameters and low authenticity of a simulation effect with a conventional method for simulating the diffusion process of the contrast agent in the prior art, and realize the technical effects of good instantaneity, high simulation effect accuracy and simple simulation process.

Description

technical field

[0001] The invention relates to the technical field of digital surgery, in particular to a method and device for simulating a contrast medium diffusion process. Background technique

[0002] Cardiovascular disease is the largest cause of death in the world. Interventional surgery is a kind of small channel with a diameter of a few millimeters in blood vessels and skin, or through the original pipeline of the human body, without surgical exposure of the lesion. Under the guidance of equipment (angiography machine, fluoroscopy machine, CT, MR, B-ultrasound), it is the least traumatic treatment method to treat the lesion locally. This method has become an important treatment method for cardiovascular diseases because of its advantages of small trauma, simplicity, safety and effectiveness, few complications and short hospital stay. Interventional surgery has very high requirements on the actual surgical experience and hand-eye coordination ability of the perform...

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