Cranial CTA is an imaging modality that refers to cranial CT angiography. Cranial CTA is usually for cranial arterial vessels to ct angiography, mainly to inject contrast agent into the blood vessels, and then through the CT examination to obtain vascular imaging, and then play a role in checking the effect of disease. The cranial CTA examination can understand the cerebral blood vessel lumen, lumen and wall of the lesion situation, as well as to determine whether the blood vessel is blocked. At the same time, it can also understand the specific situation of blood circulation in the skull and brain as well as the distribution of blood vessels, which can help to determine whether there is any disease of the blood vessels themselves and exclude other problems in the skull. If there is any abnormality in cranial CTA examination, it is recommended that the patient should go to a specialized hospital in time and under the guidance of the doctor to carry out relevant medical examinations. If intracranial vascular disease occurs, the patient should actively cooperate with the doctor’s treatment.