Battleday FM, Williams M, Rankine J, et al. - The present study was undertaken to develop the statistical agreeability of MR and CT for evaluation of adequate screw placement in posterior lumbar interbody fusion. This opportunistic retrospective study was conducted to include 58 patients investigated 297 images of 296 implanted screws. Researchers scrutinised post-operative MR and CT images for depiction of lumbar pedicle screw position using a 5-point scale. For statistical agreeability, Kappa value tested MR against CT. For evaluation of adequate screw position, there is strong to near-perfect agreement between MR and CT in PLIF surgery. For analyzing screw placement, MR alone was found to be useful and should be recognized first-line imaging in uncomplicated cases with CT analysis reserved for cases of uncertainty.