Fig. 4

Milestone 2: FD-OCT enables comprehensive 3D endoscopic imaging results. a Illustration of helical scanning scheme (side-viewing rotation + pullback). b and c depict reprints from landmark papers of first preclinical demonstrations of endoscopic FD-OCT, in vivo. b shows a 3D rendering of data recorded in the esophagus of a living swine as well as cross sectional data details and a comparison to histology (figure and caption adapted and reprinted with permission from [69] © Springer Nature). c depicts a balloon-centered 3D dataset and a 2D cross-section of the distal esophagus of a swine in vivo (figure and caption adapted and reprinted with permission from [71] © American Society for Gastrointestinal Endoscopy)