Comparison of 7T MRA and DSA in assessment of the Suzuki staging system for Moyamoya disease

This is the authors' abstract. We don't add key points for this paper.

Moyamoya disease (MMD) is an uncommon chronic cerebrovascular disease and a leading cause of stroke in pediatric and young patients. Suzuki staging system based on conventional digital subtraction angiography (DSA) is a useful and important index in clinical. However, DSA is invasive and unnecessary in some situations. 7T TOF-MRA enables the visualization of the "puff of smoke" collateral network in MMD compared to 1.5T and 3T. We tried to grade the Suzuki staging system by using 7T TOF-MRA in MMD patients. Our results indicated that 7T TOF-MRA showed excellent performance as DSA on grading the Suzuki staging system in MMD.