A navigation system for orthopedic surgery based on multimodal image fusion

Abstract

The present invention proposes a navigation system for orthopedic surgery based on multi-mode image fusion, including: a binocular vision positioning camera for real-time acquisition of the spatial coordinates of passive infrared reflective marking balls placed on surgical instruments and the skin surface of subjects; The segmentation module is used to accurately segment the spine part in the initial image; the spatial coordinate registration module is used to register the spatial coordinates and image coordinates; the surgical instrument calibration module is used to establish the coordinates of the tip of the surgical instrument and place it at its end The conversion relationship of passive infrared reflective marker spherical coordinates; the multimodal image registration module is used to register the intraoperative cone-beam CT image to the preoperative CT image; the visual interface module is used to establish a three-dimensional image for intraoperative Real-time display of the position of the surgical instrument in the image of the subject. The present invention can accurately locate the real-time position of the surgical instrument in the subject during the operation, provide accurate and reliable navigation for orthopedic surgery, effectively reduce the operation risk and operation time, and the system is easy to operate and has high applicability.

Description

technical field [0001] The invention relates to a navigation system for orthopedic surgery based on multi-mode image fusion, which belongs to the fields of medical images, computer vision, image processing and the like. Background technique [0002] In traditional surgical operations, doctors cannot directly observe the specific position of surgical instruments entering the human body. Surgeons usually rely on experience to judge the anatomical structure of the human body, and then combine preoperative CT images or intraoperative X-ray images to locate surgical instruments. ,guide. Therefore, the market urgently needs a new surgical navigation system to guide surgical instruments to a specific location quickly and accurately in complex surgical operations to assist in the completion of the operation. With the development of technologies such as computers, medical imaging, and high-precision measurement, the surgical navigation system based on multimodal image guidance is gr...

AI Technical Summary

Problems solved by technology

A navigation system for orthopedic surgery disclosed in the related art (Chinese patent application number: 200710066724.6), which relies on the intramedullary nail, tracks the position of the surgical instrument by determining the relative position of the surgical instrument and the intramedullary nail. However, the system mainly uses There are certain limitations in the fracture restoration surgery of the closed intramedullary nail

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