Preoperative evaluation of C2 pedicle screw placement using a deep learning model: Development and validation study
Fig 2
a: Utilize the “Multi-Planar Reconstruction (MPR) function” of the RadiAnt DICOM Viewer software; b: Employ the MPR function to correct potential skeletal deformities or improper positioning during patient scans to the standard transverse and standard sagittal planes; c: Reconstruct a tilted transverse plane along the longitudinal axis of the vertebral arch root notch in the standard sagittal position (yellow line); d: Reconstruct an oblique coronal plane perpendicular to the longitudinal axis of the vertebral arch root notch in the tilted transverse plane (red line), ensuring that the oblique coronal section is simultaneously perpendicular to the axis (blue line) and sagittal plane (yellow line) of the root arch, and measure the marrow cavity width (MPD) at the narrowest part of the vertebral arch root notch on the oblique coronal section; e: Classify cases with MPD ≥ 4.78 mm into the low-risk group; f: Classify cases with MPD < 4.78 mm into the high-risk group.