Facial spasm model based on MR images and preparation method thereof

Abstract

The invention provides a facial spasm model based on MR images and a preparation method thereof, and the method comprises the steps: obtaining 3D high-resolution MRI scanning images of facial auditory nerves, adjacent blood vessels and brain stem through an MR nerve imaging sequence, importing the obtained original image data into modeling post-processing software, carrying out the image fusion, segmentation and reconstruction of the pressed facial auditory nerves, responsibility blood vessels and adjacent brain stem structures to obtain the three-dimensional anatomical model of facial spasm nerve vessel compression, and putting the three-dimensional anatomical model of facial spasm nerve vessel compression in a color 3D printer to print an individualized 3D printed solid model. The facial spasm nerve vessel compression form, degree, complex walking and front-back and up-down space relations of adjacent structures are effectively displayed, and the requirements of precise medical evaluation and operations are met. The model is used for preoperative planning, operation simulation and teaching training, reduces the exploration time in the micro-vascular decompression operation, reduces the operative complications, and improves the teaching effect of medical training.

Description

technical field [0001] The invention belongs to the technical field of medical models, in particular to a hemifacial spasm model based on MR images and a preparation method thereof. Background technique [0002] Hemifacial spasm, also known as hemifacial twitching, manifests as paroxysmal, irregular and involuntary twitches on one side of the face to varying degrees. The onset usually begins with involuntary beating of the orbicularis oculi muscle. Fatigue, mental stress, and voluntary movement are aggravated, seriously affecting the patient's mental state and quality of life. [0003] In clinical practice, hemifacial spasm is caused by vascular compression in the area where the facial nerve exits the brainstem, in which the anterior inferior cerebellar artery and posterior inferior cerebellar artery are the main ones. The relative development of the posterior inferior cerebellar artery and the anterior inferior cerebellar artery varies greatly, and it is easy to form compl...

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Problems solved by technology

[0005] However, in clinical practice, conventional MR high-resolution images are 2D images, and the distribution of the branches of the anterior inferior cerebellar artery, posterior inferior artery, vertebrobasilar artery, and adjacent veins varies greatly from individual to individual, and there may be multiple responsible vessels. There is a neurovascular compression, the degree of neurovascular contact or compression is difficult to quantify, and it is difficult to describe the shape and spatial relationship of the neurovascular compression and other influencing factors, making it difficult for neurosurgeons to accurately understand the relationship between the responsible blood vessel and The three-dimensional relationship of the compressed nerve space and the difference in the spatial imagination of the surgeon affect the precise judgment of the surgical area before the operation. During the teaching and training, the students cannot fully understand the spatial structure and mechanical characteristics of the nerve and blood vessels, resulting in Accurate preoperative evaluation of hemifacial spasm, accurate implementation of microvascular decompression and effective medical teaching and surgical training are facing certain difficulties and challenges

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