This should be replaced~

Electronic colon cleansing uses contrast solutions which are mixed with food to enhance the colonic materials in the abdominal images. Then it removes the enhanced materials by image segmentation. On the left shows the enhanced materials inside the colon (indicated by the arraws) of a volunteer CT (computed tomography) image. The segmented results are shown on the right. This technique will simplify the bowel preparation and reduce false diagnosis in virtual colonoscopy.