31 research outputs found
Endoscopic ultrasonography and anorectal pathology: Biennal review of literature 2003–2004
Endoscopic drainage of obstructed biliary system in altered gastrointestinal anatomy: An experience from a tertiary center in India
Le FVIIa corrige la coagulopathie d’une insuffisance hépatique fulminante, mais peut être associé à la thrombose: présentation de quatre cas
Strategy for esophageal non-epithelial tumors based on a retrospective analysis of a single facility
Three-Dimensional Photoacoustic Endoscopic Imaging of the Rabbit Esophagus
We report photoacoustic and ultrasonic endoscopic images of two intact rabbit esophagi. To investigate the esophageal lumen structure and microvasculature, we performed in vivo and ex vivo imaging studies using a 3.8-mm diameter photoacoustic endoscope and correlated the images with histology. Several interesting anatomic structures were newly found in both the in vivo and ex vivo images, which demonstrates the potential clinical utility of this endoscopic imaging modality. In the ex vivo imaging experiment, we acquired high-resolution motion-artifact-free three-dimensional photoacoustic images of the vasculatures distributed in the walls of the esophagi and extending to the neighboring mediastinal regions. Blood vessels with apparent diameters as small as 190 mu m were resolved. Moreover, by taking advantage of the dual-mode high-resolution photoacoustic and ultrasound endoscopy, we could better identify and characterize the anatomic structures of the esophageal lumen, such as the mucosal and submucosal layers in the esophageal wall, and an esophageal branch of the thoracic aorta. In this paper, we present the first photoacoustic images showing the vasculature of a vertebrate esophagus and discuss the potential clinical applications and future development of photoacoustic endoscopy