Figure 2.

PET/CT images of T staging. (a) A 58-year-old man with gastric carcinoma pathologically diagnosed as stage T1; focal thickening of the gastric wall in the antrum with increased uptake tissues not exceeding the intermediate layer (arrow). (b) A 46-year-old woman with gastric carcinoma pathologically diagnosed as stage T2; focal thickening of the gastric wall in the cardia with increased uptake tissues exceeding the intermediate layer without infiltrating the whole thickened gastric wall (arrow). (c) A 70-year-old man with gastric carcinoma pathologically diagnosed as stage T3; focal thickening of the gastric wall in the antrum, the whole thickened gastric wall is infiltrated by the increased uptake tissues with a smooth and well-defined outer border (arrow). (d) A 74-year-old man with gastric carcinoma pathologically diagnosed as stage T4; thickening of the gastric wall in the cardia and fundus, the whole thickened gastric wall with an irregular outer border is infiltrated by the increased uptake tissues and transmural extension into perigastric fat (arrow).