Diagnosis of extent of early gastric cancer using flexible spectral imaging color enhancement

Figure 4 Most elevated-type early gastric cancers are detected easily as yellowish lesions with clearly contrasting demarcation. A: Conventional image (EG590-ZW) in a distant view reveals a slightly elevated lesion similar to the mucosal color of surrounding area in the anterior wall of lower body; B: Flexible spectral imaging color enhancement (FICE) image shows an uneven surface on the elevated tumor; C: A close-up FICE image without magnification exhibits an irregular microstructural pattern on uneven tumor surface distinct from the surrounding mucosa; D: FICE image with low magnification distinguishes an apparently irregular microstructural pattern of cancer from a normal microstructural pattern of the surrounding mucosa.