Validating the Safety and Effectiveness of ENDOANGEL Lower Gastrointestinal Endoscope Image Auxiliary Diagnostic Software

- 18 years old ≤ age ≤ 75 years old, male or female;

- Subjects with colonoscopy diagnosis and screening needs;

- Sign the Written Informed Consent Form;

- With full capacity for civil conduct.

- History of acute myocardial infarction (within 6 months), severe heart, liver, and renal insufficiency or mental disease;

- Patients who are taking aspirin, warfarin, and other anticoagulants;

- Patients with inflammatory bowel disease, or polyposis syndromes, or confirmed or highly suspected colon cancer;

- History of colorectal surgery;

- Patients with familial adenomatous polyposis;

- Pregnant women (if the subject is a woman of reproductive age and cannot confirm whether she is pregnant, a pregnancy test is required);

- Patients who are participating in clinical trials of other drugs or medical devices;

- Patients who are not eligible to participate in this clinical trial in the opinion of the investigator.