Automatic segmentation of the colon for virtual colonoscopy.

@article{citeulike:2937857, abstract = {Virtual colonoscopy is a minimally invasive technique that enables early detection of colorectal polyps and cancer. Normally, a patient's bowel is prepared with colonic lavage and gas insufflation prior to computed tomography scanning. An important step for 3D analysis of the image volume is segmentation of the colon. The high-contrast gas/tissue interface that exists in the colon lumen makes segmentation of the majority of the colon relatively easy; however, two factors inhibit automatic segmentation of the entire colon. First, the colon is not the only gas-filled organ in the data volume: lungs, small bowel, and stomach also meet this criterion. User-defined seed points placed in the colon lumen have previously been required to spatially isolate the colon. Second, portions of the colon lumen may be obstructed by peristalsis, large masses, and/or residual feces. These complicating factors require increased user interaction during the segmentation process to isolate additional colonic segments. To automate the segmentation of the colon, we have developed a method to locate seed points and segment the gas-filled lumen sections without user supervision. We have also developed an automated approach to improve lumen segmentation by digitally removing residual contrast-enhanced fluid. Experimental results with 20 patient volumes show that our method is accurate and reliable.}, address = {Wake Forest University School of Medicine, Winston Salem, NC, USA. cwyatt@wfubmc.edu}, author = {Wyatt, C. L. and Ge, Y. and Vining, D. J. }, citeulike-article-id = {2937857}, issn = {0895-6111}, journal = {Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society}, keywords = {colonoscopy}, number = {1}, pages = {1--9}, posted-at = {2008-06-27 19:04:56}, priority = {2}, title = {Automatic segmentation of the colon for virtual colonoscopy.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/10739316}, volume = {24}, year = {2000} }

TY - JOUR ID - citeulike:2937857 L3 - citeulike-article-id:2937857 TI - Automatic segmentation of the colon for virtual colonoscopy. JF - Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society VL - 24 IS - 1 SP - 1 EP - 9 AD - Wake Forest University School of Medicine, Winston Salem, NC, USA. cwyatt@wfubmc.edu SN - 0895-6111 N2 - Virtual colonoscopy is a minimally invasive technique that enables early detection of colorectal polyps and cancer. Normally, a patient's bowel is prepared with colonic lavage and gas insufflation prior to computed tomography scanning. An important step for 3D analysis of the image volume is segmentation of the colon. The high-contrast gas/tissue interface that exists in the colon lumen makes segmentation of the majority of the colon relatively easy; however, two factors inhibit automatic segmentation of the entire colon. First, the colon is not the only gas-filled organ in the data volume: lungs, small bowel, and stomach also meet this criterion. User-defined seed points placed in the colon lumen have previously been required to spatially isolate the colon. Second, portions of the colon lumen may be obstructed by peristalsis, large masses, and/or residual feces. These complicating factors require increased user interaction during the segmentation process to isolate additional colonic segments. To automate the segmentation of the colon, we have developed a method to locate seed points and segment the gas-filled lumen sections without user supervision. We have also developed an automated approach to improve lumen segmentation by digitally removing residual contrast-enhanced fluid. Experimental results with 20 patient volumes show that our method is accurate and reliable. KW - colonoscopy AU - Wyatt, CL AU - Ge, Y AU - Vining, DJ PY - 2000///b UR - http://view.ncbi.nlm.nih.gov/pubmed/10739316 ER -