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Proceedings Paper

Investigation of computer-aided colonic crypt pattern analysis
Author(s): Xin Qi; Yinsheng Pan; Michael V. Sivak; Kayode Olowe; Andrew M. Rollins
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Paper Abstract

Colorectal cancer is the second leading cause of cancer-related death in the United States. Approximately 50% of these deaths could be prevented by earlier detection through screening. Magnification chromoendoscopy is a technique which utilizes tissue stains applied to the gastrointestinal mucosa and high-magnification endoscopy to better visualize and characterize lesions. Prior studies have shown that shapes of colonic crypts change with disease and show characteristic patterns. Current methods for assessing colonic crypt patterns are somewhat subjective and not standardized. Computerized algorithms could be used to standardize colonic crypt pattern assessment. We have imaged resected colonic mucosa in vitro (N = 70) using methylene blue dye and a surgical microscope to approximately simulate in vivo imaging with magnification chromoendoscopy. We have developed a method of computerized processing to analyze the crypt patterns in the images. The quantitative image analysis consists of three steps. First, the crypts within the region of interest of colonic tissue are semi-automatically segmented using watershed morphological processing. Second, crypt size and shape parameters are extracted from the segmented crypts. Third, each sample is assigned to a category according to the Kudo criteria. The computerized classification is validated by comparison with human classification using the Kudo classification criteria. The computerized colonic crypt pattern analysis algorithm will enable a study of in vivo magnification chromoendoscopy of colonic crypt pattern correlated with risk of colorectal cancer. This study will assess the feasibility of screening and surveillance of the colon using magnification chromoendoscopy.

Paper Details

Date Published: 12 February 2007
PDF: 9 pages
Proc. SPIE 6432, Endoscopic Microscopy II, 64320I (12 February 2007); doi: 10.1117/12.702008
Show Author Affiliations
Xin Qi, Case Western Reserve Univ. (United States)
Yinsheng Pan, Case Western Reserve Univ. (United States)
Michael V. Sivak, Case Western Reserve Univ. (United States)
Kayode Olowe, Case Western Reserve Univ. (United States)
Andrew M. Rollins, Case Western Reserve Univ. (United States)


Published in SPIE Proceedings Vol. 6432:
Endoscopic Microscopy II
Guillermo J. Tearney; Thomas D. Wang, Editor(s)

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