TY - JOUR AU - Refai, Hakki; Koudsi, Badia; Kudsi, Omar Yusef TI - Novel polyp detection technology for colonoscopy: 3D optical scanner SN - 2364-3722 SN - 2196-9736 PY - 2020 JO - Endosc Int Open JF - Endoscopy International Open LA - EN VL - 08 IS - 11 SP - E1553 EP - E1559 DA - 2020/10/21 AB - Background and study aims Fifty-eight percent of American adults aged 50 to 75 undergo colonoscopies. Multiple factors result in missed lesions, at a rate of approximately 20 %, potentially subjecting patients to colorectal cancer. We report on use of a miniaturized optical scanner and accompanying processing software capable of detecting, measuring, and locating polyps with sub-millimeter accuracy, all in real time.Materials and methods A prototype 3 D optical scanner was developed that fits within the dimensions of a standard endoscope. After calibration, the system was evaluated in an ex-vivo porcine colon model, using silicon-made polyps.Results The average distance between two adjacent points in the 3 D point cloud was 94 µm. The results demonstrate high-accuracy measurements and 3 D models while operating at short distances. The scanner detected 6 mm × 3 mm polyps in every trial and identified polyp location with 95-µm accuracy. Registration errors were less than 0.8 % between point clouds based on physical features.Conclusion We demonstrated that a novel 3 D optical scanning system improves the performance of colonoscopy procedures by using a combination of 3 D and 2 D optical scanning and fast, accurate software for extracting data and generating models. Further studies of the system are warranted. PB - Georg Thieme Verlag KG DO - 10.1055/a-1261-3349 UR - http://www.thieme-connect.com/products/ejournals/abstract/10.1055/a-1261-3349 ER -