Legend Axial T2W images are normal.

Legend MIP images from an MR angiogram reveal a large artery connecting the left cavernous carotid with the basilar artery.

Legend Source images from the MR angiogram show a large vascular structure in the left prepontine cistern. A conventional angiogram confirms filling of the basilar artery from a branch off the left cavernous carotid. Key words: mri mra angiography vascular congenital developmental

Brain Diagnosis Persistent trigeminal artery