Orthopedic surgery navigation system based on multimode image fusion

Abstract

The invention provides an orthopedic surgery navigation system based on multimode image fusion, which comprises a binocular vision positioning camera used for acquiring space coordinates of a passiveinfrared reflection marking ball placed on a surgical instrument and the skin surface of a subject in real time; an image segmentation module used for accurately segmenting a spine part in an initialimage; a space coordinate registration module used for registering the space coordinates and the image coordinates; a surgical instrument calibration module used for establishing a conversion relationship between surgical instrument tip coordinates and passive infrared reflection marking ball coordinates placed at the tail end; a multimode image registration module used for registering an intraoperative cone beam CT image to a preoperative CT image; and a visual interface module used for establishing a three-dimensional image and displaying the position of the surgical instrument in the subject image in real time during a surgery. According to the invention, the real-time position of the surgical instrument in the body of the subject during the surgery can be accurately positioned, accurate and reliable navigation is provided for the orthopedic surgery, the surgical risk is effectively reduced, the surgical time is reduced, and the system is simple and convenient to operate and high inapplicability.

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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