Endoscopic ultrasonography (EUS) has been performed at Haukeland University Hospital, University of Bergen, since 1987. This method has made it possible to image small lesions which often can not be seen using other imaging techniques, and to obtain EUS-guided biopsies, to perform EUS-guided therapeutic procedures and to study pathophysiology of the gut. The aim of this atlas is to demonstrate EUS-images of the upper gastrointestinal tract using dedicated echoendoscopes with rotating and linear transducers as well as transendoscopic miniprobes. Furthermore, images of EUS-guided diagnostic and therapeutic procedures, EUS-examination of gut motility, 3D-EUS and EUS-elastography are presented. Serial EUS-images of lesions displayed in different scanning planes and using different EUS-modes and equipment are also shown. Svein Ødegaard, MD, PhD, professor, University of Bergen and Director of National Centre for Ultrasound in Gastroenterology, Haukeland University Hospital. Lars Birger Nesj
