Designation according to the new SanPin (order 254 of April 12, 2022) – R/P (X-ray and pulmonary Doppler examination). This is a modern type of research in medicine. Radiation is always dangerous, and when performing an X-ray examination there can be a high risk of complications. Ideally, the patient should be examined by a doctor, take a medical history, and draw up an examination plan. But due to the complex trajectories of gastric probing, if a patient is urgently hospitalized in the gastroenterology department, all X-ray examinations are proposed to be performed without a doctor’s prescription or appointment.