Radiological anatomy of the vascularization of cranial dural arteriovenous malformations.

Knowledge of the radiological anatomy of the cranial dural vascularization allows a flexible and appropriate approach to the pretherapeutic investigation of cranial dural arteriovenous malformations. The variability of the origin of these arteries requires that several possible sources of vascular supply be investigated - internal carotid, internal maxillary, ascending pharyngeal, occipital and vertebral - and that each of their meningeal branches be known in detail. Finally, familiarity with the radiological anatomy of these vessels allows one to identify on routine angiography those vessels that may be a source of risk when performing techniques of endovascular therapy (pedicles supplying the cranial nerves, internal carotid and vertebral anastomoses). Each foramen at the base and vault of the cranium contains an artery to the dura mater. Accordingly, very precise topographical study, in particular of the cavernous region, can be made.