Figure 3. Microstructure of the small intestine wall after strangulation:

(a), (b), (e) 2D cross-sectional CP OCT images obtained from the serous membrane of the strangulated intestine: the upper part is the image in co-polarization, and the lower part — in cross-polarization. Yellow arrows indicate gas bubbles in the intestinal lumen; pink arrows — the narrowed intestinal lumen, exposing the opposite part of the wall; (c) 3D OCT image; (d) histological preparation (PAS reaction) corresponding to this image (e). 1 — indicates the serous and muscle layers; 2 — submucosal and mucous layers