Endosonography is a diagnostic technique that combines ultrasound imaging and endoscopy.

Often this method is also called endoscopic ultrasound. To perform it, a special ultrasound endoscope is used, equipped not only with an optical system, but also with a miniature ultrasound transducer. Endosonography can be supplemented with Dopplerography and elastography. In addition, fine-needle biopsy of neoplasms can be performed during the procedure. The ultrasound transducers for endoscopes used in this method operate at frequencies of 5-20 MHz.

Endosonography plays a key role in the diagnosis of tumours that are difficult to assess due to anatomical features of their location and limitations of other diagnostic methods. The use of endosonography allows assessing neoplasms of the intestinal wall and other organs at a depth of up to 4-6 cm, as well as detecting pathological foci of small size.

Ultrasound endoscopy is used to examine the gastrointestinal tract (GIT) organs to diagnose pancreatic, oesophageal, gastric, duodenal cancer, perform biopsies of focal GIT lesions, and detect neoplasms in the gallbladder and bile ducts, pancreas, colon and rectum. Endosonography is also actively used in pulmonology to diagnose lung cancer and evaluate intrathoracic lymph nodes.

You will need an Olympus EU-ME3 ultrasound video processor, as well as ultrasound-enabled video scopes such as the GF-UE160-AL5, GF-UCT180, TGF-UC180J, BF-UC190F, and various ultrasound transducers such as convex, linear, and radial transducers.