<unk>  <unk>  or echo-endoscopy is a medical procedure in which endoscopy (insertion of a probe into a hollow organ) is combined with<unk>  to obtain images of the internal organs in the chest, abdomen and colon. It can be used to visualize the walls of these organs, or to look at adjacent structures. Combined with Doppler imaging, nearby blood vessels can also be evaluated.<unk>  ultrasonography is most commonly used in the upper digestive tract and in the respiratory system. The procedure is performed by gastroenterologists or pulmonologists who have had extensive training. For the patient, the procedure feels almost identical to the<unk>  procedure without the<unk>  part, unless<unk> -guided biopsy of deeper structures is performed.
Endoscopic ultrasound
Nasoendoscopy
Capsule endoscopy
Chromoendoscopy
Sialoendoscopy
Per-oral endoscopic myotomy
Magnetogastrography
Adjustable gastric band