A Study to Evaluate the Safety and Efficacy of Oral Contrast Agent for Sonography

1. subjects whose physicians recommend oral gastrointestinal CEUS;

2. subjects aged 18-80 years;

3. The subject or guardian can understand the purpose of the study, voluntarily sign the informed consent, and agree to the clinical follow-up;

1. Pregnant and lactating women;

2. Subjects with dysphagia;

3. Subjects suspected of gastric bleeding, gastrointestinal perforation, intestinal disorders or gastrointestinal obstruction;

4. Subjects who are expected to receive surgery within 60 hours;

5. Subjects who have received gastroscopy within 24 hours;

6. subjects deemed unsuitable for the study by the researcher;

7. Subjects who have participated in other drug or device clinical trials and have not completed the expected primary endpoint follow-up of the clinical trials in which they participated.