Brain CT can be done with porcelain teeth, but the number and location of porcelain teeth may affect the accuracy of brain CT. 1. Generally speaking, if there are a large number of porcelain teeth, the cranial brain CT may affect the local light, resulting in some artifacts and affecting the accuracy of the examination; if there is only a single porcelain tooth, it will not affect the examination results in general. 2. For brain CT examiners with porcelain teeth, the examination can be carried out first. If the examination image is not clear, a second examination can be carried out by removing the porcelain teeth to prevent misdiagnosis or omission of diagnosis; if the examination image is clear, there is no need to remove the porcelain teeth. For those who have porcelain teeth, they should indicate their condition to the examining physician before the brain CT, so as to facilitate their examination operation. If the examination results are not clear, they can carry out a second examination or change the examination method under the guidance of the doctor according to their own condition.