Arterial supply for the upper cervical nerves and the cervicocarotid anastomotic channels: systematization of radiological anatomy.

A simplified map of the cervicovertebralcarotid channels is presented with a description of the arterial supply to the cervical nerves. The aim of the work is also to open the field for endovascular therapy of malignant lesions distal to carotid ligation with greatest security, and to discuss a new approach to some upper cervical neuropathies.