PT - JOURNAL ARTICLE AU - Larner, Andrew J TI - Intracranial bruit: Charles Warlow’s challenge revisited AID - 10.1136/practneurol-2021-003226 DP - 2022 Feb 01 TA - Practical Neurology PG - 79--81 VI - 22 IP - 1 4099 - http://pn.bmj.com/content/22/1/79.short 4100 - http://pn.bmj.com/content/22/1/79.full SO - Pract Neurol2022 Feb 01; 22 AB - Over 20 years ago, Charles Warlow, the founding editor of Practical Neurology, offered a copy of his stroke textbook to anyone diagnosing an intracranial arteriovenous malformation by auscultation of the skull alone. This article examines the possible diagnostic value of intracranial bruit in terms of the 2×2 contingency table for diagnostic tests and recounts an historical case.