Guest Editors: Tufail Patankar (Department of Interventional Radiology, Leeds Teaching Hospitals NHS Trust, Leeds General Infirmary, Leeds, UK), Ricardo Hanel (Lyerly Neurosurgery, Baptist Neurological Institute, Jacksonville, FL, USA) and Jeremy Lynch (Department of Neuroradiology, Kings College Hospital NHS Trust, London, UK)

Guest Editors: Adnan Siddiqui (Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA) and Liqi Shu (Department of Neurology, The Warren Alpert Medical School of Brown University, Providence, RI; Department of Neurology, The Miriam Hospital, Providence, RI, USA)