AJNR -- Zaharchuk et al. 29 (4): 663 Figure 1

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Fig 1. ASL signal-intensity difference ( ${Delta}$ M, control – label) images in all subjects. Decreased ${Delta}$ M signals were seen in all subjects in all regions of interest during the 100% oxygen inhalation. However, accounting for the reduced hyperoxygenated blood T1, we found that only small CBF decreases were measured with oxygen.