Book excerpt: This book gathers a collection of cases with challenging diagnoses, in which nuclear medicine examinations have been particularly helpful in terms of the final diagnosis or follow-up. The cases presented chiefly involve patients with neurodegenerative disorders, epilepsy and brain tumors. The book is intended for nuclear medicine specialists as well as clinicians, offering essential guidance on the interpretation of neurology cases in the clinical setting, particularly with regard to correctly interpreting diagnostic imaging procedures. The authors were selected from the members of the Neuroimaging Committee of the EANM and have extensive experience as clinicians and teachers within the Nuclear Medicine Community.