CT can be taken with a medical insurance card, and can be billed with a medical insurance card. CT examinations are radioactive, and CT cannot be done if the patient is preparing for pregnancy or during pregnancy. In the current medical consultation process, CT is very common and can detect lesions early, for example, patients with abdominal pain can be examined to clarify whether there is intestinal obstruction, gallbladder stones, pancreatitis, whether there is free gas in the abdominal cavity, appendicitis and so on. In addition, patients with traumatic brain injury also need urgent CT to detect early whether there is brain hemorrhage, brain contusion, subdural hematoma, epidural hematoma, skull fracture, etc.