Flexible sigmoidoscopy is a test that a doctor uses to check the inner lining of your rectum and the lower part of your colon. You may get this test if you have certain gut problems, such as ...

The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, P.R. China Bioinspired Engineering ...