The difference between abdominal ct and colonoscopy

Abdominal CT scan refers to the use of X-ray and computer imaging techniques to examine organs in the abdomen and pelvis, such as pancreas, liver, kidneys, stomach, small intestine, colon, etc.; colonoscopy is an endoscopic examination method used to examine the inner walls of the large intestine and rectum. Abdominal CT

scans use X-ray and computer imaging technology to generate high-quality images by analyzing the different degrees of absorption, scattering and transmission of internal tissues of the human body; colonoscopy is performed by inserting a flexible endoscope into the rectum and advancing it along the large intestine, while injecting air or water into the lumen, so that the doctor can observe the internal conditions of the intestine

. Abdominal

CT scans usually do not cause pain or discomfort, but may require contrast injection; colonoscopy requires insertion into the anus, which may cause discomfort, pressure and mild pain

. Abdominal

CT scans are usually safe, but there may be risks such as contrast allergy and radiation exposure, while colonoscopy may cause complications such as bleeding and perforation in a few cases.