Correlation between fractional flow and magnetic resonance perfusion in patients with intracranial artery stenosis in the anterior circulation - Wu, Jiong; Zou, Rong; Bai, Yixin; Hu, Yumeng; Xiang, Jianping; Wan, Shu (Quantitative Imaging in Medicine and Surgery; Vol 16, No 2 (February 01, 2026): Quantitative Imaging in Medicine and Surgery, 2026)