Microsurgical Angioarchitectonics of Deep Brain Structures and Deep Arterial Anastomoses.


Vascular Department, National Medical Research Center, Burdenko Neurosurgical Institute, Moscow, Russia. Electronic address: [Email]


BACKGROUND : Surgeries for deep and eloquent cerebral lesions require a detailed knowledge of normal brain anatomy and accurate planning. Important parts of brain anatomy are the cerebral blood supply and collateral circulation system. In addition to well-known cortical and basal (circle of Willis) anastomoses, there is also a deep interarterial anastomotic circle that is not described in the literature.
METHODS : Twenty brain specimens were studied for deep arterial anastomotic connections between branches of the anterior and posterior choroidal arteries.
RESULTS : We have marked 3 symmetric zones of deep arterial anastomoses that form an epithalamic circle.
CONCLUSIONS : Epithalamic anastomoses provide an additional mechanism of blood distribution that may play a role during surgical interventions or stroke.


Deep arterial anastomoses,Epithalamic arterial circle,Neurosurgery,Normal brain anatomy,

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