Figure 6: Correlation plots of group-average fMRI CBF
percent changes with respect to PET CBF changes in the V1, t-map, and GM ROIs. The dots represent results from baseline and 4
levels of visual stimulation, and the triangles represent the results for the
5% hypercapnia condition. The equations resulted from the linear fitting of the
data, represented by the dotted lines. The hypercapnic ΔCBF measured using PET and MR are similar. In
all 3 cases, the values have probabilities well
within the range of acceptance, and t-test
results indicate the slope of the linear fit is not significantly different
from unity.
