Brain anatomy

Arachnoid membrane, basal cisterns, circle of Willis

Human brain with arachnoid membrane
Whole brain photogrammetry scan of human brain specimen with arachnoid membrane preserved.
Brain cisterns
Contrast enhanced (through lumbar puncture) computed tomography scan.
This is a case of traumatic brain injury, frontal bone fracture, frontal sinus fracture, frontal skull base fracture. In yellow the contras material in the brain arachnoid cisterns is presented indicating the cerebrospinal fluid leak from the cribriform plate and frontal sinus. The main basal cisterns are presented.
Circle of Willis