Fig. 6.

Left panel: Magnetic resonance imaging (MRI) scan, using 3D MP-RAGE sequence, at 3 Tesla, showing the brain of a TBI patient with a microdialysis catheter (via a cranial access device) in position, the catheter tip indicated by an arrow (yellow). Scale bar (green) shows centimetre divisions. Image is courtesy of the Wolfson Brain Imaging Centre, Dept. of Clinical Neurosciences, University of Cambridge. Right panel: Schematic of ¹³C-labelled microdialysis. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)