title: A model of deformable rings for interpretation of wireless capsule endoscopic videos.
abstract: Wireless Capsule Endoscopy (WCE) provides a means to obtain a detailed video of the small intestine. A single session with WCE may produce nearly 8h of video. Its interpretation is tedious task, which requires considerable expertise and is very stressful. The Model of Deformable Rings (MDR) was developed to preprocess WCE video and aid clinicians with its interpretation. The MDR uses a simplified model of a capsule's motion to flexibly match (register) consecutive video frames. Essentially, it computes motion-descriptive characteristics and produces a two-dimensional representation of the gastrointestinal (GI) tract's internal surface - a map. The motion-descriptive characteristics are used to indicate video fragments which exhibit segmentary contractions, peristalsis, refraction phases and areas of capsule retention. Within maps, certain characteristics that indicate areas of bleeding, ulceration and obscuring froth could be recognized. Therefore, the maps allow quick identification of such abnormal areas. The experimental results demonstrate that the number of discovered pathologies and gastrointestinal landmarks increases with the MDR technique.
authors.affiliation: Institute of Electronics, Technical University of Lodz, Wolczanska 211/215, 90-924 Lodz, Poland. pms@p.lodz.pl
authors.forename: Piotr M
authors.initials: PM
authors.lastname: Szczypiński
authors.forename: Ram D
authors.initials: RD
authors.lastname: Sriram
authors.forename: Parupudi V J
authors.initials: PV
authors.lastname: Sriram
authors.forename: D Nageshwar
authors.initials: DN
authors.lastname: Reddy
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D053704:Capsule Endoscopy / Q000379:methods*; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique; D014741:Video Recording / Q000379:methods*