The investigators hypothesize that a newly developed CADx system will have a higher diagnostic accuracy in predicting histopathology of colorectal neoplasia than both expert and junior endoscopists.
They have received colonoscopy for screening, surveillance or symptom investigation;
They have endoscopic images and videos captured and stored during colonoscopy which are available to be retrieved;
They have histologically proven colorectal neoplasia.
Written consent obtained
Incomplete visualization of the colorectal neoplasia due to technical reasons (e.g. out-of-focus, motion-blurred or insufficient illumination);
Artifacts due to mucus, air bubbles, stool, or blood.
Active gastrointestinal bleeding;
Fulminant colitis;
Patient with colorectal neoplasia
Cohort
Prospective
CADx
DeviceA novel CADx system for real-time histopathological prediction of colorectal neoplasia, by using non-magnified conventional white-light and image enhanced endoscopy.
Diagnostic accuracy
area under receiver operating characteristic curves, AUROC in prediction of final histopathology
Sensitivity
Sensitivity
Specificity
Specificity
Positive predictive value
Positive predictive value
Negative predictive value
Negative predictive value
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Chinese University of Hong Kong
Lead sponsor
Nanfang Hospital, Southern Medical University
Collaborator
University College, London
Collaborator
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