AQCS for Detection of Early Cancer and Precancerous Lesions on Upper Gastrointestinal Tract

Computer-aided Real-time Automatic Quality-control System for Detection of Early Cancer and Precancerous Lesions on Upper Gastrointestinal Tract: a Multicenter Randomized Controlled Study

The purpose of our study was to assess the performance of esophagogastroduodenoscopy automatic quality-control system in real-time quality control of EGD.

Investigators developed a real-time quality control system of esophagogastroduodenoscopy(EGD) named EGD automatic quality-control system (AQCS). Investigators carried a prospective multicenter randomized controlled trial to assess the performance of this system in quality control of real-time EGD, including detecting the early upper gastrointestinal cancer and precancerous lesions, assessing inspection completeness, mucosal visibility, time of EGD procedure and other indicators.

Inclusion Criteria:

• Patients aged 40-80 years old
• Patients scheduled for white light EGD examination with anaesthesia
• American Society of Anesthesiology risk class 1, 2 or 3

Exclusion Criteria:

• Patients with known advanced esophageal or gastric cancer
• Patients with a history of esophageal or gastric surgery
• Patients scheduled for therapeutic EGD
• Patients with stenosis or obstruction of upper gastrointestinal tract
• Patients with a history of serious anesthesia-related complications
• Patients in pregnancy or lactation phase
• Patients refused to sign the informed consent