Fig. 7
From: Intruding implements: a pictorial review of retained surgical foreign objects in neuroradiology
Ventricular catheter. Axial T2-weighted (a), FLAIR (b), unenhanced (c), and post-contrast (d) T1-weighted images presenting a left occipital access ventricular catheter (arrows) with mild peripheral gliosis (arrowheads in a and b) and subtle enhancement (arrowheads in d)