FIGURE 1. Primary tumor, normal (Nl) breast, and LV blood time–activity curves from sample patient with metabolically active tumor after injection of ¹⁵O-water (A) and ¹⁸F-FDG (B). Y-axis units are arbitrary units of radioactivity that are same for both plots. Curves have been corrected for radioactive decay. Y-axis and x-axis scales are different.

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