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

Figure 2 OCT image of a fresh pig esophageal wall specimen. OCT image of the esophageal wall delineated a five-layered morphology (arrows) consisting of a relatively less reflective layer (the first layer), a more reflective layer (the second layer), a less reflective layer (the third layer), a more reflective layer (the fourth layer), and a less reflective layer (the fifth layer). The white bar represents 1 mm.