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Venous epidural spaces
Spinal and Cranial homologies and new classification of dural AVS

Geibprasert Sasikan MD

Department of Radiology, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
Supported by a grant of the WFITN 2006

Spinal Venous epidural spaces

Page 1, 2, 3, 4, 5, 6, 7, 8

Osteo (cartilaginous)-epidural

Ventral spinal epidural
Vertebral body

Epidural-leptomeningeal

Lateral Spinal epidural

Osteo (membranous)-epidural

Posterior spinal epidural veins

Ventral epidural space related to the notochord; no primary role in pial venous drainage. Pial reflux if thrombosis or high flow shunt

Lateral epidural space primary related to pial venous drainage; reflux always present
Posterior epidural space related to the confluence of posterior epidural venous plexuses and bony draining veins; pial reflux if thrombosis or high flow shunt.

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Venous epidural spaces Spinal and Cranial homologies and new classification of dural AVS