Left: Axial T2 image shows an approximately 5mm round flow void near the junction of the
A1 segment of the left Anterior Cerebral Artery (ACA) and the Anterior Communicating
Artery (ACom). A smaller round flow void in the left suprasellar cistern is the
supraclinoid portion of the internal carotid artery.
Right: Axial FLAIR image shows some signal in the center of the anterior flow void.
Left: Maximum Intensity Projections (MIPs) of the cerebral vasculature show an aneurysm
near the junction of the left ACA and the anterior communicating artery (ACom).
Right: Volume rendered CT angiogram confirms the Acom aneurysm.
Cerebral angiogram demonstrates the saccular aneurysm arising from the junction of the left
ACA and ACom.
Key words: mri mra cta angiogram vascular aneurysm
Anterior communicating artery aneurysm