In this issue of Neuroimaging Clinics , guest editors Drs. Mahmud Mossa-Basha, Carlos Zamora, and Mauricio Castillo bring their considerable expertise to the topic of Vasculitis . Both conventional and advanced imaging play a central role in the diagnosis of vasculitides, and in this issue, top experts in the field discuss classification, guidelines, diagnosis, pathology, and imaging of every major type of vasculitis.