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

Figure 5

3D-OCT orthoplanes from the BE region immediately after CSA treatment. (a) The en face orthoplane is located at a depth of 170 𝜇m. The colored dotted lines indicate location of complementary orthoplanes (b), (c), and (d). Blue arrows indicate the locations of the edema-like tissues, and red arrows indicate the hyperscattering necrotic tissues on top of the treated regions. (b) The cross-sectional YZ orthoplane shows the epithelium (ep), lamina propria (lp), and muscularis mucosa (mm). (c) The cross-sectional XZ orthoplane shows the edema-like tissue extending into the muscularis mucosal layer. (d) The cross-sectional XZ orthoplane shows the hyperscattering, detached tissue on top of the treated area. Inset shows a video endoscopy image with the 3D-OCT probe in position prior to image acquisition. Red box indicates region of interest in Figure 6.