The results of examination in 44 patients with gastric peptic ulcer were used to consider the potentialities of a transabdominal ultrasound study in the diagnosis and monitoring of gastric ulcerations. The ultrasound semiotics of gastric ulcers is described in the paper. A role of transabdominal ultrasound study in the algorithm of radiation and instrumental studies of gastric ulcer is defined. The inclusion of this study into the algorithm of diagnosis and monitoring of gastric peptic ulcer will make it possible not only to diagnose gastric ulcerations better, but to follow up their cicatrization. It is expedient to include a transabdominal ultrasound study as one of the diagnostic techniques for gastric peptic ulcer.