Venous territories of the brain

Area of Science:

• Neuroanatomy
• Vascular Neurology

Background:

• The cerebral hemispheres utilize two primary venous drainage systems: a superficial system draining into peripheral dural sinuses and a deep system involving Galen's vein.
• Understanding these venous territories is crucial for neurological studies and clinical practice.

Purpose of the Study:

• To delineate the drainage territories of the superficial and deep venous systems in the cerebral hemispheres.
• To investigate the variability and functional significance of cortical anastomotic vessels.

Main Methods:

• Review of anatomical and angiographic literature.
• Analysis of data defining drainage territories of cerebral collecting vessels.

Main Results:

• Superficial venous return involves the superior sagittal, lateral, and cavernous sinuses.
• The deep system is represented by Galen's vein.
• Precise delimitation of superficial sinus territories is challenging due to variations in the sylvian vein and anastomotic vessels.
• The functional role of numerous centro-peripheral anastomoses remains difficult to ascertain individually.

Conclusions:

• A deep venous territory likely balances the superficial territories within the cerebral hemispheres.
• Further research is needed to fully elucidate the functional interplay between superficial and deep cerebral venous drainage.