It is always necessary to consult a doctor before a CT examination, because due to the radiation exposure, the CT scan can only be performed on the basis of a medical recommendation, but a native cranial CT scan does not require special preparation. It is always advisable to prepare for the examination in such a way that, in justified cases, it is possible to administer a contrast agent during the CT examinations of the skull, in most cases this is necessary. Therefore, you should not eat for 6 hours before the scan.
Prior to a contrast-enhanced CT scan, metformin medications for diabetes should be discontinued 48 hours before the examination and resumed 48 hours afterwards.
A CT device is like a large, thick ring with a table moving at the bottom, you lie still on that table while the images are being taken. The device makes a humming sound during operation, but there is no need to be afraid of this.
The measurement and recording itself takes a short time, but you must not move or breathe during the scan!