A Computed Tomography-Guided Demonstration of the Unilateral Distribution of Low-Volume Epidural Injectate

Objectives The primary objective of this case report was to demonstrate the unilateral distribution of the low volume injectate given in the epidural space when paramedian interlaminar approach is utilized under computed tomography guidance. Methods This was a case report on a single patient with history of unilateral epidural contrast distribution under fluoroscopy views, who presented with bilateral lumbar radicular symptoms, and underwent epidural injections via bilateral paramedian interlaminar approach under computed tomography guidance. Multiple-level computed tomography scans were obtained for demonstration purposes. Results There was primarily unilateral distribution of low–volume injectate in the epidural space when paramedian interlaminar approach is utilized.