TY - GEN
T1 - Computer-aided detection of retroflexion in colonoscopy
AU - Wang, Yi
AU - Tavanapong, Wallapak
AU - Wong, Johnny
AU - Oh, Junghwan
AU - De Groen, Piet C.
PY - 2011/9/26
Y1 - 2011/9/26
N2 - Colonoscopy is the most popular screening tool for colorectal cancer. Recent studies reported that retroflexion during colonoscopy improved polyp yields. Retroflexion is an endoscope maneuver that enables visualization of internal mucosa along the shaft of the endoscope, enabling visualization of the mucosa area that is difficult to see with typical forward viewing. This paper describes our new method that detects endoscopic images showing retroflexion. This problem has not been investigated in the literature. We propose new region features that encapsulate important properties of endoscope appearance during retroflexion. Our experimental results on 25 colonoscopy videos show that trained Decision Tree classifiers can effectively identify retroflexion in the rectum at 92.0% accuracy and 94.4% precision.
AB - Colonoscopy is the most popular screening tool for colorectal cancer. Recent studies reported that retroflexion during colonoscopy improved polyp yields. Retroflexion is an endoscope maneuver that enables visualization of internal mucosa along the shaft of the endoscope, enabling visualization of the mucosa area that is difficult to see with typical forward viewing. This paper describes our new method that detects endoscopic images showing retroflexion. This problem has not been investigated in the literature. We propose new region features that encapsulate important properties of endoscope appearance during retroflexion. Our experimental results on 25 colonoscopy videos show that trained Decision Tree classifiers can effectively identify retroflexion in the rectum at 92.0% accuracy and 94.4% precision.
UR - http://www.scopus.com/inward/record.url?scp=80053049285&partnerID=8YFLogxK
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U2 - 10.1109/CBMS.2011.5999137
DO - 10.1109/CBMS.2011.5999137
M3 - Conference contribution
AN - SCOPUS:80053049285
SN - 9781457711909
T3 - Proceedings - IEEE Symposium on Computer-Based Medical Systems
BT - Proceedings of the 24th International Symposium on Computer-Based Medical Systems, CBMS 2011
T2 - 24th International Symposium on Computer-Based Medical Systems, CBMS 2011
Y2 - 27 June 2011 through 30 June 2011
ER -
