The illustrations in this chapter are intended to provide the reader with a reference point for the images that follow in subsequent chapters. These illustrations provide the reader with the necessary background anatomy and the most commonly encountered patterns of vascular branching.

Variability and inconstancy are the rule rather than the exception in how the vasculature tree branches within the neck and face, as well as how it branches intracranially. It is important to understand that vessels are named for the territory of tissue that they supply. We hope that your understanding of neurovascular anatomy is enhanced by the application of this concept in the atlas.

The illustrations that are presented are meant to provide the reader with a basic understanding of the relationship of the vascular tree with the tissues they nourish. During your journey through this three-dimensional (3D) atlas, refer back to these color illustrations when needed.