Cerebral Blood Flow Measurement Using fMRI and PET: A Cross-Validation Study
Figure 4
BOLD (a) and FAIR (b) time courses
of the CBF percent change in the V1 ROI averaged over 10 subjects are shown,
from left to right, corresponding to baseline, 25%, 50%, 75%, and 100%
intensity checkerboards and 5% hypercapnia. The horizontal bars represent the
3-minute periods during which the stimulus was on. An increase in signal change
can be observed with increasing checkerboard intensity for BOLD and FAIR
perfusion, ranging between 1.0%–1.9% and 11.4%–22.5%, respectively.
