Axial T2 SPACE and time of flight angiography (TOF) sequences clearly demonstrate a vascular loop of the anterior inferior cerebellar artery into the right internal auditory canal (IAC) occupying up to at least 50% of the IAC. The right IAC is also found to be larger in diameter relative to the left IAC.
The annotated VR image - created using TOF base data - shows the arterial anatomy nicely, especially the branch's origin from the basilar artery.