This volume constitutes a compilation of the latest experiments and theories on a rapidly evolving and maturing field in MRI/MRS, which is the use of the stable isotope 13-C. The 13-C is used to probe the chemistry, mechanism, and function in living systems. All the chapters are written by experts in the field who discuss topics such as ‘Tracer Theory and the Suitability of 13-C NMR', ‘Applications of 13-C to Studies of Human Brain Metabolism', etc.