There is no special effect of CT on newborns, but if there is a suspicion of a high degree of bleeding in the brain, the newborn should be given a CT of the head.When a CT of the head is given to a newborn, since it is done very rarely and only once in a while, the harm to the newborn is very small and can be ignored. This is because human tissues are tolerant to radiation, and the blood circulation of the newborn is very smooth, and thus the metabolism will be faster. Will also cause newborns to appear pathological damage, if newborns do CT very often, will lead to radiation to the body’s tissues is more harmful, thus causing newborns to appear leukemia increase, caused by the possibility of tumors, are bad situation. Therefore, newborns should try not to do CT when they can.