Abstract
We present a software system called "Polyp-Alert" to assist the endoscopist find polyps by providing visual feedback during colonoscopy. Polyp-Alert employs our previous edge-cross-section visual features and a rule-based classifier to detect a polyp edge-an edge along the contour of a polyp. The technique employs tracking of detected polyp edge(s) to group a sequence of images covering the same polyp(s) as one polyp shot. In our experiments, the software correctly detected 97.7% (42 of 43) of polyp shots on 53 randomly selected video files of entire colonoscopy procedures. However, Polyp-Alert incorrectly marked only 4.3% of a full-length colonoscopy procedure as showing a polyp when they do not. The test data set consists of about 18. h worth of video data from Olympus and Fujinon endoscopes. The technique is extensible to other brands of colonoscopes. Furthermore, Polyp-Alert can provide as high as ten feedbacks per second for a smooth display of feedback. The performance of our system is by far the most promising to potentially assist the endoscopist find more polyps in clinical practice during a routine screening colonoscopy.
Original language | English (US) |
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Pages (from-to) | 164-179 |
Number of pages | 16 |
Journal | Computer Methods and Programs in Biomedicine |
Volume | 120 |
Issue number | 3 |
DOIs | |
State | Published - Jul 1 2015 |
Keywords
- Colonoscopy
- Medical imaging/video
- Near Real-time
- Polyp detection
ASJC Scopus subject areas
- Software
- Computer Science Applications
- Health Informatics