5.0T MRI and DSA Reveal Angioarchitecture of Collateral Vessels in Hemorrhagic Moyamoya

In 26 patients with periventricular hemorrhagic moyamoya disease, three microangioarchitectural features of target collateral vessels were present in 92.3% of hemorrhagic hemispheres vs 25.0% of contralateral non-hemorrhagic hemispheres (P=0.80). These patterns require longitudi…

• The study used a cross-sectional design with multimodal 5.0T TOF-MRA, SWI, and DSA.
• The three identified microangioarchitectural features were strongly associated with hemorrhage but not statistically significant on paired analysis.
• The authors note that longitudinal studies are needed to validate these findings.

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