Comparison of Tissue Architectural Changes between Radiofrequency Ablation and Cryospray Ablation in Barrett’s Esophagus Using Endoscopic Three-Dimensional Optical Coherence Tomography

Figure 2

3D-OCT orthoplanes from the BE region immediately after RFA treatment. (a) The en face orthoplane is located at a depth of 150 μm. The colored dotted lines indicate location of complementary orthoplanes (b), (c), and (d). Red arrows indicate the locations of the burned tissue on top of the treated regions, and the blue arrow indicates the location of the residual gland. (b-c) The cross-sectional YZ orthoplanes show the epithelium (ep), lamina propria (lp), and muscularis mucosa (mm). (d) The cross-sectional XZ orthoplane shows the burned tissue right on top of the muscularis mucosal layer. Inset shows a video endoscopy image with the 3D-OCT probe in position prior to image acquisition. Red box and gray box indicate regions of interest in Figures 3(a)–3(c) and Figures 3(d)–3(f), respectively.