AJNR -- Mitsuhashi et al. 28 (6): 1179 Figure 4

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Fig 4. 3DRV (frontal view of the right side) and schema (frontal view of the right side) of type C-1: The IPS (arrow) shows a long extracranial extension and joins the IJV at the level of the atlas. In this case, the IPS has no anastomosis with the VVP. The arrowhead indicates the JB.