Fig. 2From: Efficacy of continuous epidural infusion with epidural electric stimulation compared to that of conventional continuous epidural infusion for acute herpes zoster management: a retrospective studyFluoroscopic images of continuous epidural block using the EpiStim catheter. This catheter has a built-in conductive guidewire that allows the detection of the location of the catheter tip using radiography along with electric stimulation. The arrow indicates the guidewire in the EpiStim catheterBack to article page