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. Author manuscript; available in PMC: 2012 Jun 27.
Published in final edited form as: Nat Rev Neurol. 2011 Mar 8;7(4):199–208. doi: 10.1038/nrneurol.2011.23

Figure 3.

Figure 3

Idiopathic moyamoya disease. a | Time-of-flight, noncontrast, magnetic resonance angiography shows moyamoya vasculopathy with bilateral occlusion of the internal carotid arteries (arrowheads). Robust lenticulostriate collaterals can also be observed (arrows). b | The lenticulostriate collaterals in moyamoya disease are also seen on the MRI scan, with multiple flow voids piercing the basal ganglia (arrow). c| These moyamoya collateral vessels are also seen as multiple small-flow voids around the brainstem (arrows).