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Recently, we have read several articles referencing a commonly used test for assessing collateral circulation across the posterior communicating artery (PCoA), known as Allcock’s test. This eponymous test, described by James Allcock, a pioneering neuroradiologist, was unfortunately missspelled as ‘Alcock’s’ test in several publications.1–5 We would like to take this opportunity to briefly discuss the test itself and a brief history of Dr Allcock’s contributions.
The story of Dr John Allcock and Dr Charles Drake exemplifies the strength of collaboration between neuroradiologists and neurosurgeons.6 While Drake is a household name among neurosurgeons worldwide, few are familiar with Allcock, one of his chief collaborators.7 Drake first described …
Contributors VMS, MGZG, and PK meet the criteria for authorship.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.