Identification of the layered morphology of the esophageal wall by optical coherence tomography

Figure 6 OCT image and corresponding histological sections of esophageal wall specimen injected with cyanoacrylate adhesive into the fourth layer. A: OCT image of esophageal wall specimen injected with cyanoacrylate adhesive into the fourth layer (more reflective layer). The injection location of cyanoacrylate adhesive into the fourth layer is clearly recognized. B: Corresponding histological section. The cyanoacrylate adhesive is observed in submucosa (HE, original magnification × 4). C: Corresponding histological section (EM, original magnification × 4). The white and black bars represent 1 mm.