Left carotid artery angiogram, AP view on DSA brain showing anterior circulation of brain. The catheter tip is visible in the left ICA with good contrast flow in the left ICA (black arrow). The right MCA (red arrowhead) and right ACA (white arrow) are being supplied from the anterior communicating artery (red arrow) indirectly from the left ICA. Left MCA (black arrowhead) and left ACA are directly supplied through left ICA.AP - anteroposterior; DSA - digital subtraction angiography; ICA - internal carotid artery; MCA - middle cerebral artery; ACA - anterior cerebral artery