Bouthillier et al. described in 1996 a seven segment internal carotid artery (ICA) classification system. It remains the most widely used system for describing ICA segments.
Primary intracranial diseases were initially reported in 1987 and subsequently, defined as a distinct CNS neoplasm in 1996 and added to the World Health Organization (WHO) Brain Tumor Classification in 2000 (grade IV).
From the Journal of Neurosurgery Publishing Group’s (JNSPG’s) online and freely accessible journal.
Focus was implemented at a time when digital publications were just coming into existence.