Vascular Anatomy: The Head, Neck and Skull Base; Neurovascular Anatomy of the Brain and Skull; Vascular Anatomy of the Spine and Spinal Cord; Intracranial Collateral Anastomoses - Relevance to Endovascular Procedures; CT Imaging, MR Imaging and Ultrasound; Applications to Endovascular Procedures; Techniques and Devices in Neuroendovascular Procedures; Percutaneous Vertebroplasty; Inferior Petrosal Sinus Sampling in the Diagnosis of Sellar Neuropathology; Physiological Testing; Balloon Occlusion Testing, and WADA Testing in Neuroendovascular Procedures