3D Printed Circle of Willis

3D Printed Circle of Willis This 3D printed specimen demonstrates the intracranial arteries that supply the brain relative to the inferior portions of the viscero- and neurocranium. This print was created by careful segmentation of angiographic data. The model shows the paired vertebral arteries entering the cranial cavity through the foramen magnum and uniting to form the basilar artery. The basilar can be seen dividing into their terminal posterior cerebral arteries. The superior cerebellar arteries arise just proximal to this termination. The internal carotid arteries (ICAs) can be traced from the point where they enter the petrous portion of the temporal bone via the carotid canal and travel medially and anteriorly to emerge on the superior margin of the foramen lacerum. It is here that each ICA lies within the cavernous sinus (not shown). The S-shaped carotid siphon on both left and right sides are most beautifully demonstrated lateral to the sella turcica. The ICAs th