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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Alzheimer Dis Assoc Disord. 2009 Jul–Sep;23(3):245–252. doi: 10.1097/WAD.0b013e318199ff46

Figure 2.

Figure 2

A. Example of middle frontal (1), superior frontal (2), posterior cingulate (3), and precuneus (4) ROIs on an axial image. B. Example of middle (1) and superior (2) frontal ROIs on a coronal image. C. Example of posterior cingulate (3) and precuneus (4) ROIs on a sagittal image. The red box indicates the brain region where pulsed arterial spin labeling (ASL) occurred while the yellow lines represent the 7 slices where ASL MR data was acquired. D. Example of postcentral ROI (5) where mean perfusion values were extracted for use as covariates to adjust for global variations of perfusion.