TABLE 2

Regional SUVs and 18F-FDG–to–18F-FES SUV Ratio

ClassPatients18F-FDG SUV18F-FES SUV18F-FDG–to–18F-FES ratio
High-risk carcinoma (stage ≥ Ic or grade ≥ 2)119.9 ± 2.6* (5.4–14.8)3.4 ± 1.6 (1.3–6.3)3.6 ± 2.1 (1.3–7.4)
Low-risk carcinoma (stage ≤ Ib and grade 1)117.1 ± 3.7 (2.4–12.5)5.3 ± 1.8 (2.1–8.1)1.3 ± 0.5 (0.5–1.8)
Endometrial hyperplasia91.5 ± 0.3 (1.1–1.9)5.6 ± 2.4† (2.7–11.0)0.3 ± 0.1 (0.2–0.4)

  • ↵* P < 0.0001.

  • ↵† P < 0.005 significantly higher between the 2 PET tracers (paired t test).

  • Values are mean ± SD. Statistical significance for group comparison is given in Figures 1 and 2. Data in parentheses are ranges.