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We developed an artificial intelligence model based on a convolutional neural network (CNN) for the automatic detection of blood content in CCE images. Training and validation datasets were constructed for the development and testing of the CNN. The CNN detected blood with a sensitivity, specificity, and positive and negative predictive values of 99.8\u200a%, 93.2\u200a%, 93.8\u200a%, and 99.8\u200a%, respectively. The area under the receiver operating characteristic curve for blood detection was 1.00. We developed a deep learning algorithm capable of accurately detecting blood or hematic residues within the lumen of the colon based on colon CCE images.<\/jats:p>","DOI":"10.1055\/a-1490-8960","type":"journal-article","created":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T08:29:22Z","timestamp":1629793762000},"page":"E1264-E1268","source":"Crossref","is-referenced-by-count":20,"title":["Artificial intelligence and colon capsule endoscopy: automatic detection of blood in colon capsule endoscopy using a convolutional neural network"],"prefix":"10.1055","volume":"09","author":[{"given":"Miguel","family":"Mascarenhas Saraiva","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, S\u00e3o Jo\u00e3o University Hospital, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"},{"name":"Faculty of Medicine of the University of Porto, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"}]},{"given":"Jo\u00e3o P. S.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Faculty of Engineering of the University of Porto, Porto, Portugal"},{"name":"INEGI \u2013 Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal"}]},{"given":"H\u00e9lder","family":"Cardoso","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, S\u00e3o Jo\u00e3o University Hospital, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"},{"name":"Faculty of Medicine of the University of Porto, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"}]},{"given":"Jo\u00e3o","family":"Afonso","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, S\u00e3o Jo\u00e3o University Hospital, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"},{"name":"WGO Gastroenterology and Hepatology Training Center, Porto, Portugal"}]},{"given":"Tiago","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, S\u00e3o Jo\u00e3o University Hospital, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"},{"name":"WGO Gastroenterology and Hepatology Training Center, Porto, Portugal"}]},{"given":"Patr\u00edcia","family":"Andrade","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, S\u00e3o Jo\u00e3o University Hospital, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"},{"name":"Faculty of Medicine of the University of Porto, Alameda Professor Hern\u00e2ni Monteiro, Porto, Portugal"}]},{"given":"Marco P. 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