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. Author manuscript; available in PMC: 2010 Jun 16.
Published in final edited form as: J Nucl Med. 2009 May 14;50(6):878–886. doi: 10.2967/jnumed.108.058529

FIGURE 2.

FIGURE 2

Groupwise estimated average ROI-to-cerebellum ratio on PiB PET (numerals 1–4) with 95% nonparametric confidence intervals (gray lines). Average used is pseudo-median, which is defined as median of midpoints of all possible pairs of observations in group. CN = controls; supp. = superior.