Optical coherence tomography and Doppler optical coherence tomography in the gastrointestinal tract

Figure 1 Scheme of a standard optical coherence tomography set-up based on a Michelson interferometer.

Figure 2 Scheme of fourier domain-optical coherence tomography set-up.

Figure 3 Set-up for OCS1300SS (courtesy of Thorlabs). OCT: Optical coherence tomography; SS: Swept source.

Figure 4 2-D (A) and 3-D (B) optical coherence tomography images of gastric tissue biopsy with visualization of normal components of the parietal layers.

Figure 5 Macroscopic view of a chick embryo chorioallantoic membrane with human gastric tumor implant.

Figure 6 Doppler-optical coherence tomography imaging of a chick embryo chorioallantoic membrane (2 mm × 2 mm) showing capillary activity (arrows) near a human gastric tumor implant.