AXIAL SOURCE MRA OF THE HEAD

ANTERIOR CIRCULATION:

ICA

• Cervical ICA
• Petrous ICA
• Cavernous ICA
• Ophthalmic ICA
• Supraclinoid ICA
• ICA terminus
• Ophthalmic artery
• Right Posterior Communicating (Pcomm)
• Right Anterior Choroidal

Right MCA

• M1 Segment
• MCA Bifurcation
• M2 Superior Division
• M2 Inferior Division

Right ACA

• A1 segment
• Anterior communicating artery
• A2 segment
• Pericallosal
• Callosomarginal



POSTERIOR CIRCULATION

Right Vertebral Artery

• V3 Segment
• V4 Segment (intradural)
• Vertebrobasilar Junction
• Right PICA
• Basilar Artery
• Right AICA
• Right Superior Cerebellar Artery

Right PCA

• Right P1 Segment
• Right P2 Segment

VRT ROTATION SERIES

ANTERIOR CIRCULATION

ICA

• Cervical ICA
• Petrous ICA
• Cavernous ICA
• Ophthalmic ICA
• Supraclinoid ICA
• ICA terminus
• Ophthalmic Artery
• Right Pcomm
• Right Anterior Choroidal

Right MCA

• M1 Segment
• MCA Bifurcation
• M2 Superior Division
• M2 Inferior Division

Right ACA

• A1 Segment
• Anterior communicating artery
• A2 Segment
• Pericallosal (A3 Segment)
• Callosomarginal (A3 Segment)

POSTERIOR CIRCULATION

Right Vertebral Artery

• V3 Segment
• V4 Segment (intradural)
• Vertebrobasilar Junction
• Right PICA
• Basilar Artery
• Right AICA
• Right Superior Cerebellar Artery

Right PCA

• Right P1 Segment
• Right P2 Segment

For an in-depth description of the ICA and its segments please refer to neuroangio.org