Similar model retrieval method based on craniomaxillofacial three-dimensional shape database and device thereof

Abstract

The invention provides a similar model retrieval method based on a craniomaxillofacial three-dimensional shape database and a device thereof. According to the method, through retrieving a skull modelwhich is closest to a to-be-restored skull in a preset database, an individualized face defection surgery designing template is retrieved and generated on the condition of two-side wound or defectionof the patient, thereby ensuring symmetry of the craniomaxillofacial part after surgery, and maximally preventing problems such as face asymmetry deformity, diplopia and mouth opening restriction.

Description

technical field [0001] The application belongs to the field of medical image generation and application, and in particular relates to a similar model retrieval method and device based on a craniomaxillofacial three-dimensional shape database. Background technique [0002] The craniofacial area, as an element of social identity identification, is also an important window for a beautiful appearance. Its health and beauty are of great significance to a person's physiological, social, and psychological states. The symmetry of the craniofacial structure is not only an aesthetic requirement, but also a necessary condition for good function. [0003] For unilateral facial defects, trauma, deformities, etc., the existing technical methods are relatively mature. By calibrating the CT standard head position and using the method of mirroring the healthy side, a template can be obtained as a reference target for repair and reconstruction, and the navigation design can be carried out by ...

AI Technical Summary

Problems solved by technology

[0004] As for bilateral trauma or defect, due to the lack of data on the healthy side as a reference, there is no recognized method for preoperative design, which is still a difficult point in treatment. There are mainly the following problems before and after surgery: 1) Due to the uneven morphology of facial bones Irregular, lacking the characteristic landmarks of the healthy side to guide the restoration; 2) In the absence of reference and preoperative design, the operation is difficult, the operation time is long, and the trauma is large; 3) Facial asymmetry deformity and limited mouth opening are easy to be caused after the operation Abnormalities of vision, chewing, etc.

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