Percheron's artery
The Percheron artery or Artery of Percheron is an artery that contributes to the blood supply to the brain as a rare anatomical variant . It emerges from the P1 segment of one of the two posterior cerebral arteries (PCA) and forms the trunk for smaller arteries that supply parts of the thalamus and the midbrain ( mesencephalon ). The basal and medial thalamus are usually supplied by multiple arteries that emerge separately from the posterior cerebral artery.
A closure of the vessel results in a bilateral paramedian Thalamusinfarkt. Thalamic infarction can occur in isolation (38%), in association with midbrain infarction (43%), together with infarction of the anterior thalamus and midbrain (14%) and occasionally with anterior thalamic infarction without midbrain involvement (5%).
The vessel is named after the French neurologist and neuroanatomist Gérard Percheron († 2010), who described it as one of four variants in his work on the blood supply to the thalamus.
Web links
- Schematic representation of the Percheron artery and digital subtraction angiography (DSA) of the vessel (from Lazzaro et al .: Artery of Percheron Infarction: Imaging Patterns and Clinical Spectrum. In: American Journal of Neuroradiology. 31, 2010, pp. 1283-1289, doi : 10.3174 / ajnr.A2044 .)
Individual evidence
- ^ Mathias Bähr, Michael Frotscher : Neurological-topical diagnostics. Anatomy - Function - Clinic. 9th, revised edition. Thieme, Stuttgart 2009, ISBN 978-3-13-535809-3 , p. 433.
- ^ NA Lazzaro, B. Wright, M. Castillo, NJ Fischbein, CM Glastonbury, PG Hildenbrand, RH Wiggins, EP Quigley, AG Osborn: Artery of Percheron Infarction: Imaging Patterns and Clinical Spectrum. In: American Journal of Neuroradiology. Vol. 31, 2010, pp. 1283-1289, doi : 10.3174 / ajnr.A2044 .
- ^ G. Percheron: Arteries of the thalamus in man. Choroidal arteries. I. Macroscopic study of individual variations. II. Systematization. In: Revue neurologique. Vol. 133, No. 10, October 1977, ISSN 0035-3787 , pp. 533-545, PMID 613428 .