Figure 2.

Eighty-four-year-old woman with right hepatic lobe mass. (A) Tumor did not exhibit definite ¹¹C-acetate uptake (TNR_Ace: 0.99). (B) In contrast, high ¹⁸F-FDG uptake was shown (TNR_FDG: 6.73). FAratio was 6.80. (C) Initial arterial phase image of dynamic CT. (D) She was a nonresponder after TACE. Three months after TACE, the size of the tumor was increased, and right portal vein invasion was observed. CT = computed tomography, ¹⁸F-FDG = ¹⁸F-fluoro-D-glucose, FAratio = ratio of TNR_FDG and TNR_Ace, TACE = transarterial chemoembolization, TNR_Ace = maximum tumor SUV to mean normal liver SUV ratio of ¹¹C-acetate, TNR_FDG = maximum tumor SUV to mean normal liver SUV ratio of ¹⁸F-FDG.