https://www.selleckchem.com/products/grazoprevir.html There was a high consistency between the 2 single-phase CTA-based collateral flow scales with DSA-based American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology scale. The assessment by using CTA-based collateral flow assessment methods generated consistent results. The single-phase CTA-based visual collateral score scale and regional leptomeningeal score scale can be used as the imaging evidence for the evaluation of collateral flow in AIS patients in the majority of grassroots hospitals where DSA is difficult to carry out. The single-phase CTA-based visual collateral score scale and regional leptomeningeal score scale can be used as the imaging evidence for the evaluation of collateral flow in AIS patients in the majority of grassroots hospitals where DSA is difficult to carry out. This study evaluated the efficacy of 3-dimensional fluid-attenuated inversion recovery (3D FLAIR) for detecting intradural ecchordosis physaliphora (EP). We retrospectively determined the presence or absence of intradural EP on 3D FLAIR for 3888 consecutive patients, classifying the EP as "classical" or "possible" and analyzing the prevalence, size, and presence or absence of an intraosseous stalk. Where available, magnetic resonance cisternography images were compared with the 3D FLAIR images. Intradural EP was identified in 50 patients (1.3%) 36 (0.9%) classical and 14 (0.4%) possible. The classical EPs were significantly larger than the possible EPs (P < 0.01). Nine EPs (18.0%) showed an osseous stalk. Magnetic resonance cisternography was performed for 19 EPs (16 classical, 3 possible), detecting all 16 classical EPs but none of the possible EPs. Classical EPs were detected by 3D FLAIR as with magnetic resonance cisternography. The 3D FLAIR findings suggested a new type of possible EP variant previously unreported. Classical EPs were detected by 3D FLAIR as with magnetic resonance cist