2 Human Brain Anatomy in 3D
23
Fig. 2.14 Stereotactic target structures in 3D. The marks on the axes are placed at 10 mm intervals
The internal carotid artery branches into the anterior cerebral artery (Fig. 2.17c)
and the middle cerebral artery (Fig. 2.17d). The left and right posterior cerebral
arteries originate from the basilar artery (Fig. 2.17e).
2.3.1.2 Anterior Cerebral Artery
The anterior cerebral artery (ACA) has the following main branches (Fig. 2.18):
• A1 segment (precommunicating part)
• A2 segment (postcommunicating part)
– Pericallosal artery
– Callosomarginal artery
2.3.1.3 Middle Cerebral Artery
The middle cerebral artery (MCA) is subdivided into four segments (Fig. 2.19a):