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- W4205902246 abstract "Prior studies have described high venous signal qualitatively using arterial spin labelling (ASL) in patients with sickle cell anemia (SCA), consistent with arteriovenous shunting. We aimed to quantify the effect and explored cross-sectional associations with arterial oxygen content (CaO 2 ), disease-modifying treatments, silent cerebral infarction (SCI), and cognitive performance. 94 patients with SCA and 42 controls underwent cognitive assessment and MRI with single- and multi- inflow time (TI) ASL sequences. Cerebral blood flow (CBF) and bolus arrival time (BAT) were examined across gray and white matter and high-signal regions of the sagittal sinus. Across gray and white matter, increases in CBF and reductions in BAT were observed in association with reduced CaO 2 in patients, irrespective of sequence. Across high-signal sagittal sinus regions, CBF was also increased in association with reduced CaO 2 using both sequences. However, BAT was increased rather than reduced in patients across these regions, with no association with CaO 2 . Using the multiTI sequence in patients, increases in CBF across white matter and high-signal sagittal sinus regions were associated with poorer cognitive performance. These novel findings highlight the utility of multiTI ASL in illuminating, and identifying objectively quantifiable and functionally significant markers of, regional hemodynamic stress in patients with SCA." @default.
- W4205902246 created "2022-01-26" @default.
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- W4205902246 date "2022-01-06" @default.
- W4205902246 modified "2023-10-16" @default.
- W4205902246 title "Venous cerebral blood flow quantification and cognition in patients with sickle cell anemia" @default.
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- W4205902246 doi "https://doi.org/10.1177/0271678x211072391" @default.
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- W4205902246 hasPublicationYear "2022" @default.
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