Clinical Research Directory

Inclusion Criteria: * Being between 18-75 years of age. * Scheduled for TFESI due to lumbar radicular pain as part of routine clinical practice based on clinical and imaging findings. * Planned for unilateral or bilateral, single or multi-level TFESI. * Having appropriate quality lumbar MR images obtained within the last 6 months prior to the procedure. * Providing written informed consent. Exclusion Criteria: * History of spinal surgery at the target lumbar level that could significantly alter anatomy and fluoroscopic imaging (e.g., instrumentation, fusion, or significant bone resection). * Presence of severe scoliosis or structural spinal deformity affecting the standard TFESI technique or standard fluoroscopic projections. * Significant motion, metal, or other imaging artifacts on lumbar MR images. * Inadequate quality of any of the pre-defined standardized sagittal, parasagittal, or axial T2-weighted images in the current MRI examination. * Inability to perform or cancellation of the planned TFESI procedure for any reason.