Real-time evaluation and correction method in spine posterior approach operation

Abstract

The invention discloses a real-time evaluation and correction method in a spine posterior approach operation. Each segment of the spine is divided by an X ray photo and is matched with each corresponding segment of a 3D model which is constructed by CT (Computed Tomography), rigid body transformation is estimated, and thus a rectification result can be obtained; on the basis, the whole spine is spliced, a real-time three-dimensional spine form of a patient on an operating table is reconstructed, an operation effect is estimated in real time, the orientation for placing a nail is corrected in time, the incorrect nail placement in an operation is remedied, the operation risk is reduced, and the success rate of the operation is improved. According to the method, the spine segments belong to rigid bodies, the whole spine belongs to a non-rigid body, and 2D / 3D images of a non-rigid body joint target are subjected to registration; the 3D positions of a pedicle screw is estimated by 2D images, and the 3D form of the spine of the patient after operation nail placement is reconstructed; the problems that visual real-time monitoring and correction lacks in the existing spine posterior approach operation, and the danger existing in the operation is not remedied in time are solved.

Description

technical field [0001] The invention belongs to the technical field of clinical medicine, and in particular relates to a method for real-time evaluation and correction during posterior spinal surgery. Background technique [0002] The cause of lumbar diseases is mostly caused by spinal lesions. According to the statistics of NIH in the United States, there are more than 1 million spinal operations in the United States every year, of which more than 250,000 are performed on the lumbar spine, and the treatment cost is nearly 6 billion US dollars. The number of patients with spinal lesions in my country is more than that in European and American countries. Spinal surgery is the treatment of choice for most of these patients. [0003] Among all vertebral segments, the axis is considered to be one of the more difficult segments to implement pedicle screw placement, which is mainly related to the following factors: [0004] ① The width and height of the pedicles of the axis are sm...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the embodiments of the present invention is to provide a method for real-time assessment and correction during posterior spinal surgery, aiming at solving the lack of real-time navigation guidance in the existing posterior spinal surgery and the lack of advance warning of the risks in the operation. The problem with early warning methods

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