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

Figure 4 Images of T2 gastric cancer in a 65-year-old woman. A: Gastroscopic image shows a typical ulcerative tumor; B: Multi-detector computed tomography image shows transmural, enhancing tumor (arrow) with smooth outer border of gastric wall; C: ultrasonography image shows the hypoechoic ulceroinfiltrative tumor (arrow). The mucosa, submucosa and partly muscularis propria are disruptive; D: In the arterial phase, disruption of the mucosa, submucosa and partly muscularis propria are visualized. The lesion shows homogenous hyper-enhancement, similar to the normal submucosal layer; E: In the venous phase, the lesion shows homogenous hypo-enhancement. The hyper-enhancement strip of submucosal layer and partly hypo-enhancement strip of the muscularis propria are disruptive.