Fig. 1

Spectral CT images of patients with poorly and moderately differentiated gastric adenocarcinomas at different sites. a AP image shows moderate enhancement of fundal wall thickening in a 67-year-old male patient. The maximum thickness is 17.89 mm, and ICAP is 16.78 (100 μg/ml). b PP image demonstrates a ICPP value of 27.19 (100 μg/ml) in the same patient. c Photomicrograph of histological specimen indicates a poorly differentiated adenocarcinoma [hematoxylin and eosin (H&E) stain; original magnification × 100]. d AP image shows irregular wall thickening of the gastric body in a 41-year-old female patient. The maximum thickness is 14.24 mm, and ICAP is 14.46 (100 μg/ml). e PP image demonstrates a ICPP value of 24.57 (100 μg/ml) in the same patient. f Photomicrograph of histological specimen indicates a poorly differentiated adenocarcinoma. (H&E stain; original magnification × 100). g AP image shows antrum wall thickening with surface ulcers in a 56-year-old male patient. The maximum thickness is 20.32 mm and ICAP is 11.79 (100 μg/ml). h PP image demonstrates a ICPP value of 20.19 (100 μg/ml) in the same patient. i Photomicrograph of histological specimen indicates a moderately differentiated adenocarcinoma (H&E stain; original magnification × 100)