Diagnostic Accuracy of 3-dimensional Imaging Device on Polyps and Adenomas During Colonoscopy

Inclusion Criteria: * Aged over 18 years; * Endoscopically diagnosed with colorectal polyps; * Signing the written informed consent. Exclusion Criteria: * Patients with mental illness or severe functional disorder who cannot cooperate with colonoscopy; * Patients with severe cardiopulmonary insufficiency; * Patients with severe coagulation disorders or high bleeding risk (platelets \<50×10⁹/L, INR \>1.5; discontinuation of antithrombotic drugs should follow the 2012 Japanese Guidelines for Gastroenterological Endoscopy in Patients Undergoing Antithrombotic Treatment and the2017 Appendix on Anticoagulants Including Direct Oral Anticoagulants; * Patients with severe electrolyte imbalances; * Patients with acute peritonitis or suspected intestinal perforation; * Patients with severe inflammatory bowel disease/toxic megacolon; * Patients with polyposis syndromes (e.g., Peutz-Jeghers syndrome, Cronkhite-Canada syndrome, familial adenomatous polyposis \[FAP\], Lynch syndrome, etc.); * Patients with stage 3 or higher hypertension (systolic blood pressure ≥180 mmHg or diastolic blood pressure ≥110 mmHg); * Patients with untreated severe abdominal hernia, intestinal obstruction, or advanced colorectal cancer; * Patients with intestinal strictures of any cause; * Cases requiring only endoscopic submucosal dissection (ESD); * Pregnancy and lactation.