Description

This is a prospective single-blinded randomized controlled trial of three different types of colonoscopy examinations by 1:1:1 ratio. We use EndoAim AI (ASUS, Taiwan) and Endocuff vision (Olympus, UK) assisted colonoscopy in the first group. We use AI assisted colonoscopy in the 2nd group. We use standard colonoscopy in the 3rd group.

Eligible patients are older than 40 years old and receive colonoscopy for either symptomatic or screening/surveillance. All endoscopists should receive training on EndoAim AI systems and Endocuff vision. During the procedure, experienced endoscopists use high-definition endoscopes (EVIS-EXERA 290 video system, Olympus Optical, Aizu, Japan) under white light and insert to the cecum in the three different groups. The cecal intubation is confirmed by the identification of ileocecal valve and appendiceal orifice.

The Boston Bowel Preparation Scale is used for grading the bowel preparation quality. The size (compared with biopsy forceps), location and morphology of polyps are recorded by the independent endoscopist. All polyps ae removed by either biopsy or polypectomy. The insertion and withdrawal time are measured. The time of the polypectomy site is not included in the withdrawal time.

        Patients over 20 years old are undergoing outpatient sedative colonoscopy in the E-Da
        Hospital, E-Da cancer Hospital and Chung Shan Medical University Hospital in Taiwan
        Exclusion Criteria:
          -  A prior history of of inflammatory bowel disease, colorectal cancer, previous bowel
             resection, Peutz-Jeghers syndrome, familial adenomatous polyposis or other polyposis
             syndromes
          -  Bleeding tendency
          -  For scheduled endoscopic treatment