Positron emission tomography (PET) using the tracer [11C] Flumazenil has shown changes in the distribution and expression of the GABAA receptor in a range of neurological conditions and injury states. We aim to develop a fluorine-18 labelled PET agent with comparable properties to [11C] Flumazenil. In this study we make a direct comparison between the currently known fluorine-18 labelled GABAA radiotracers and novel ...