Non-radiative percutaneous spine positioning method based on optical scanning automated outline segmentation matching

Abstract

The invention discloses a non-radiative percutaneous spine positioning method based on optical scanning automated outline segmentation matching. Through a clinical image data processing system, clinical CT (computed tomography) is imported, a three-dimensional model of the back outline and the spine of a human body can be reconstructed, and a three-dimensional model of the back outline of the human body is scanned, checked and reconstructed through structured light / TOF (Time Of Flight) optical scanning equipment, finally, a three-dimensional coordinate relationship between the spine model andthe optical scanning model of the back outline of the human body is displayed and output through the matching calculation of a three-dimensional image processing system. On the basis of optical scanning equipment, the method disclosed by the invention realizes the matching and the positioning of the spine model and the optical scanning model of the back outline of the human body, and has the advantages of no radiation, small land occupation, high scanning speed, visual display results, high repeatability and the like.

Description

technical field [0001] The invention relates to the fields of medical technology and computer image processing, and relates to a radiation-free percutaneous spine positioning method based on optical scanning automatic contour segmentation and matching. Background technique [0002] At present, percutaneous minimally invasive spinal surgery has been applied to intervertebral discectomy, laminectomy decompression, foraminotomy, cyst and tumor resection, etc. Its advantages lie in small trauma and can protect the spine and its surrounding areas to the greatest extent. anatomy. [0003] Percutaneous endoscopic surgery is a representative of percutaneous minimally invasive spinal surgery. Its trauma is small and intuitive. The display system is common with other surgical endoscopic platforms. The economic investment is not high, and it has good clinical application prospects; There are higher requirements for intraoperative positioning and puncture. Usually, the spine surgeon n...

AI Technical Summary

Problems solved by technology

However, in the medical field, because the image is more complex and contains more signals, and the information inside the human body contour is the focus of clinical treatment, the optical scanning technology that can only recognize the human body contour alone cannot achieve perspective, so Difficult to use in clinical treatment

In recent years, with the maturity of image fusion technology, there have been many technologies that try to fuse optical scanning images and medical scanning images, but these technologies are often difficult to achieve automatic matching, and they can only find fixed and prominent feature points manually. The parts of the human body (such as the nose and ears of the human body) are used as the target points for contour matching. The reason lies in the complexity and density inhomogeneity of human medical image signals. The 3D point cloud generated based on medical images cannot achieve uniform and equal size. , it is difficult to match the homogeneous 3D point cloud generated based on optical scanning

In addition, the inconsistency of the three-dimensional coordinate ratio of the human medical image and the optical scanning image, and the inconsistency of the starting point of the coordinates will also cause the matching image to be rotated, embedded, shifted, etc.

[0007] The skin on the back of the human body is highly mobile, has no fixed surface shape, and has no characteristic anatomical landmarks. Its appearance can change with the body's height, fat, and thinness, and can also change with the change of body position, so it is difficult to optically scan images and clinical medical images for matching

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