CT Neck Angiography (Arterial Anatomy) 1. Aortic Arch Brachiocephalic trunk Left common carotid artery (CCA) Left subclavian artery 2. Common Carotid Arteries Right and left CCA Course Wall (atheroma/dissection) Bifurcation level (usually C3–C4) 3. Carotid Bifurcation Carotid bulb External carotid artery (ECA) Internal carotid artery (ICA) 4. Internal Carotid Artery (ICA) Cervical segment Petrous segment Cavernous segment Supraclinoid segment Assess: Stenosis Occlusion Dissection Pseudoaneurysm Fibromuscular dysplasia 5. External Carotid Artery (ECA) Major branches: Superior thyroid Ascending pharyngeal Lingual Facial Occipital Posterior auricular Maxillary Superficial temporal 6. Vertebral Arteries Segments: V1: Origin to C6 transverse foramen V2: Within transverse foramina (C6–C2) V3: Atlantoaxial/extradural V4: Intradural to basilar artery 7. Subclavian Arteries Origin Stenosis Aneurysm Aberrant anatomy CT Neck Venography (Venous Anatomy) Superficial Veins External jugular vein Anterior jugular vein Deep Veins Internal jugular vein (IJV) Vertebral vein Deep cervical vein Major Tributaries of IJV Facial vein Lingual vein Superior thyroid vein Middle thyroid vein Pharyngeal veins Occipital vein (variable) Central Veins Right and left brachiocephalic veins Superior vena cava (SVC) Dural Venous Outflow Sigmoid sinus Jugular bulb Internal jugular vein Assess: Thrombosis Compression Stenosis Collateral veins Congenital variants-- elaborate all artery and braches mentioned above it normal anatomy with ct angio images radiology learning include all images of arteries and veins