The biggest hazard of a full abdominal enhanced CT exam is radiation. Enhanced CT can increase local contrast after injection of contrast agent, using X-rays to penetrate human tissue, followed by tomographic imaging. Upper abdomen a part of the enhanced CT examination, radiation dose of about 1600mGy, the whole abdomen is equivalent to three parts, the dose can reach 4000-5000mGy, such as patients do dozens of times within a short period of time CT examination is equivalent to radiation therapy, generally as a diagnostic, the patient has done a small number of times, the body does not have any significant damage to the body, you can rest assured that the examination.