FIGURE 4. Box plot showing normalized uptake (cps/administered MBq) by 21 breast cancers in 21 women examined with ^99mTc-exametazime and ^99mTc-sestamibi. Wilcoxon matched-pairs test showed no significant difference between the 2 tracers (P = 0.48). HMPAO = exametazime; MIBI = sestamibi.