Validation of the Berlin Grading System for moyamoya angiopathy with the use of [<sup>15</sup>O]H<sub>2</sub>O PET.

Neurosurg Rev · 2022 · PMC9794537 · PMID 36574089

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a strong trendno p-value reported

Although showing a strong trend, Teo et al. could also not show a statistically significant correlation between the Berlin Grading System and postoperative clinical stroke [ 18 ], which is consistent with our results.

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