The time it takes to get the results of a cranial CT is related to the kind of test that was taken. If it is a simple cranial plain scan, the results are usually available in two hours. If the patient has an obvious brain hemorrhage or large cerebral infarction that involves such a crisis value, the report will come out within 30 minutes and the doctor will be notified immediately so that the doctor can deal with it and report the crisis value in a timely manner. If the CTA is done on the head vessels, it will be done in the morning and the results will be available around 5:00 p.m. Because the vascular examination is relatively laborious, such as the need for post-processing reconstruction, the imaging of the cerebral vessels should be done completely, and the workstation needs to look carefully and carefully at the vessels to see whether there are any abnormalities, such as aneurysm, smoldering disease and so on, so the time to get the results will be longer than that of plain scan.