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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Semin Ultrasound CT MR. 2021 Aug 1;42(5):463–473. doi: 10.1053/j.sult.2021.07.004

Figure 6: VWI of Moyamoya Disease.

Figure 6:

(A) 3D TOF MRA shows severe stenosis of the left internal carotid artery terminus, severe irregularity of the left A1 anterior cerebral artery and nonvisualization of the left M1 middle cerebral artery (MCA) with lenticulostriate collaterals in a patient with moyamoya disease (MMD). (B) Sagittal-oblique precontrast T1w VWI of the right M1 MCA shows a thin vessel wall with preservation of the lumen diameter and appears normal. (C) The affected left M1 MCA shows small outer and inner diameters consistent with inward (negative) wall remodeling, a feature reported in MMD. (D) Axial T2w VWI shows lenticulostriate collaterals at the site of the left M1 MCA.