You can have ct and enhanced ct within a week, they do not conflict with or affect each other. The two main considerations are CT radiation safety and contrast allergy, both of which are reliably safe and generally have no effect on the body. 1. The possible danger of ct scanning mainly lies in the fact that the body is exposed to a certain dose of radiation during the examination process. The ct radiation currently used is very low, below the lowest dose that may lead to an increased risk of cancer, and is reliably safe. Both CT and enhanced CT done within a week are within the safe dose range. 2. Enhanced ct is based on ordinary ct, using iodine contrast agent injected intravenously to visualize the lesion to improve local contrast and improve the basis of diagnosis. After entering the body, iodine contrast agent is metabolized by the kidneys, and the possible risks are iodine allergy and renal impairment. At present, before perfecting the enhancement ct, a detailed assessment will be carried out on the examinee, and the chance of risk occurrence is low. Overall, ct flat scan and enhancement ct can be perfected at the same time within a week, in general, there is no effect on the body, it is recommended that under the guidance of the doctor, reasonable and standardized examination.