Method for acquiring standard axial view of vertebral pedicle

Abstract

The invention relates to the field of medicine, in particular to a method for acquiring a standard axial view of the vertebral pedicle. The method comprises the following steps that S1, a pedicle screw implanting path is planned according to preoperative CT data; S2, an X-ray diagram of the vertebral pedicle of a target object is shot through a C arm X-ray machine in a normal view; S3, the rotating direction and the corresponding rotating angle of a C arm rotating to the standard axial view of the vertebral pedicle are calculated according to the planned pedicle screw implanting path and the current X-ray diagram; S4, the pose of the C arm is adjusted according to the rotating direction and the corresponding rotating angle. Therefore, the needed further rotating direction and the corresponding rotating angle of the C arm rotating to be in the standard axial view of the vertebral pedicle are calculated by combining the pre-planned pedicle screw implanting path and the current C arm pose reflected by the X-ray diagram, then the C arm is rotated according to the rotating direction and the corresponding rotating angle, high goal orientedness is achieved, and the standard axial view of the vertebral pedicle can be fast obtained.

Description

technical field [0001] The invention relates to the field of medicine, in particular to a method for obtaining a standard axial view of the pedicle. Background technique [0002] In the prior art, due to the stenosis of the pedicle, once the screw passes through the side wall of the pedicle, the operation will fail. However, the implantation of the pedicle screw currently depends on the experience of the doctor, and the failure rate of the operation is as high as 30%. [0003] The ideal method of operation is to use the principle of pedicle standard axis positioning, which is to make the axis of the pedicle overlap with the emission axis of the C-arm X-ray machine as much as possible, so that the peripheral geometric shape of the pedicle can be seen in real time And size, as long as the screw does not exceed the peripheral shape, the operation can be very safe. [0004] However, the area of ​​the X-ray image taken by the C-arm X-ray machine is small, the perspective angle c...

AI Technical Summary

Problems solved by technology

[0004] However, the area of ​​the X-ray image taken by the C-arm X-ray machine is small, the perspective angle cannot be accurately displayed, and the alignment is difficult. Experienced doctors also need to adjust the posture of the C-arm many times. According to each X-ray image Rotate the C-arm until the two rings on the front and rear surfaces of the pedicle axis in the X-ray diagram coincide. At this time, the axis of the pedicle overlaps with the emission axis of the C-arm X-ray machine, that is, the C-arm at this time It is located under the standard axial map of the pedicle. Taking X-axis maps multiple times will result in long intraoperative fluoroscopy time, increased radiation hazards to doctors and patients, and longer operation time and high medical costs.

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