CT three times a week for a short period of time is usually not significantly harmful, and a small number of people may experience nausea and fatigue. CT examination is a common clinical examination program, the ray on the human body has a certain radiation effect, three times a week radiation damage is superimposed, but in the short term there will be no obvious harm. If a long time and frequent CT examination, radiation will damage the body, will cause blood, reproductive system and liver, kidney and thyroid gland damage, will also increase the chance of cancer. CT utilizes rays to scan and thereby detect areas of disease. The radiation is within the body’s acceptable range for a normal examination, and it is not recommended to perform it multiple times in a week, but there are some diseases where it is necessary, such as brain hemorrhage, where a determination of the course of the disease is required. The choice is therefore made on a case-by-case basis. It is recommended to drink more water and eat more vegetables and fruits after the CT examination, thus promoting metabolism. Meanwhile, pay attention to appropriate exercise to enhance physical fitness.