Because CT is a diagnostic technique based on X-rays, it has the ionizing radiation of X-rays. Diagnostic technology through X-ray imaging is a double-edged sword, as it can help doctors diagnose diseases to eliminate patient pain, while at the same time, X-rays can damage the body’s cells and metabolic functions. But nowadays, CT technology has been able to control the radiation dose within the safe range, that is, normal once in a while examination, there is no problem. However, if CT examinations are performed several times or for a long time, there is a risk of genetic damage to the human body, leading to various harmful biological effects, especially carcinogenic effects. Therefore, the radiation of CT should not be ignored.