Fig 2.

A, Sagittal CT image of posterior lumbar spinal fusion with the MAR technique applied shows lucency surrounding the L5 pedicle screw as indicated by the white arrow. B, Image A without the MAR protocol applied, C, Axial CT image shows bilateral pedicle screws with the MAR technique applied, demonstrating lucency surrounding the bilateral pedicle screws (white arrows). If the MAR images were viewed alone, these lucencies could be mistaken for hardware loosening. D, Image C without the MAR protocol applied.