Figure 4.

Patient in their mid-40’s with Moyamoya disease presenting with dizziness for 3 months. 7-Tesla axial (a), sagittal (b), oblique (c) and coronal (d) TOF-MRA MIP reconstructions show right carotid terminus occlusion with extensive pial collaterals, and focal outpouching from collaterals representing micro-aneurysm (arrows). Axial T2-weighted (e), SWI-magnitude (f) and zoomed-in T1-weighted VWI (g) images show an additional small round lesion with heterogenous signal near the right medial temporal lobe, representing a partially thrombosed aneurysm.