"Diagnostic Accuracy of Ultrasound Compared to Epidurography for Epidural Catheter Localization"

A diagnostic test intervention using color Doppler and M-Mode ultrasound will be conducted to localize the catheter within the epidural space and compared with epidurography.

An epidurography is an imaging procedure used to visualize the epidural space of the spine. The process involves inserting an epidural catheter, through which a contrast dye is injected. Fluoroscopy or X-rays are then used to capture real-time images of the contrast flow, helping to ensure the catheter's correct placement and to detect any localization anomalies. In this study, the epidurography will be performed in the radiology department by a radiologist and a pain management interventionist.