[Gastric and intestinal appearances by abdominal ultrasound. The sign of brownian motion (author's transl)].

Gastric, as well as intestinal images, are always present on abdominal ultrasonic scans. Since they are difficult to analyse, such images are usually neglected. Morphological and dynamic criterial (as the "brownian movement sign") enable to identify stomach and intestine. It is then possible to avoid the misinterpretation of normal anatomic elements as pathological processes, and, from time to time, to diagnose specific gastrointestinal lesions.