Double contrast-enhanced ultrasonography improves diagnostic accuracy of T staging compared with multi-detector computed tomography in gastric cancer patients

Figure 3 Images of T1a gastric cancer in a 52-year-old woman. A: Gastroscopic image shows a malignant ulcer (arrow) with converging folds and uneven margin; B: Multi-detector computed tomography image shows the gastric wall with no tumor; C: US image shows the hypoechoic lesion (arrow) with the focal thickened mucosa.; D: In the arterial phase, focal thickening of the mucosa is visualized. The lesion shows slightly delayed hyper-enhancement, similar to the submucosal layer; E: In the venous phase, the lesion shows hypo-enhancement compared to the submucosal layer. The submucosal layer consistently shows hyper-enhancement and is continuous and intact. The muscular layer shows linear hypo-enhancement, and is continuous and intact.