A method and device for determining the entry point of a pedicle screw

Abstract

The invention provides a method and device for determining the entry point of a pedicle screw. In a three-dimensional model of a vertebra, the central points of the left and right pedicles are extracted from the narrowest part of the pedicle, that is, the thinnest part. The center point of the root determines the intersection point of the left and right screws. According to the intersection point of the center point of the left and right pedicles and the left and right screws, the direction vector of the implanted left and right screws and the entry point of the left and right screws are accurately determined, and the present invention realizes automatic determination. The entry point of the pedicle screw avoids the problems of low efficiency and low accuracy in determining the entry point of the pedicle screw based on the experience of operators, and improves the accuracy of determining the entry point of the pedicle screw.

Description

technical field [0001] The invention relates to the field of computer technology, and more specifically, to a method and device for determining a pedicle screw entry point. Background technique [0002] Pedicle screw technology is widely used in spinal surgery due to its biomechanical superiority in three-column fixation. Due to the stenosis of the pedicle, once the screw passes through the side wall of the pedicle, the operation will fail. Whether the screw can be accurately implanted in the pedicle becomes the key to the success of the operation. [0003] At present, the operator generally determines a cutting plane in Dicom (Digital Imaging and Communications in Medicine, medical digital imaging and communication) data before the operation, obtains a two-dimensional image, and then determines the position of the pedicle screw in the two-dimensional image based on experience. This method is inefficient, and because it mainly relies on the experience of the operator, the a...

AI Technical Summary

Problems solved by technology

[0003] At present, the operator generally determines a cutting plane in the Dicom (Digital Imaging and Communications in Medicine, medical digital imaging and communication) data before the operation, obtains a two-dimensional image, and then determines the position of the pedicle screw in the two-dimensional image based on experience. The nail entry point, this method is inefficient and has low accuracy because it mainly relies on the experience of the operator

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