MRI is already used in most cases for diagnostic examination of the head and brain. MRI is an imaging technique that provides much more detailed information about brain areas, but it cannot be used in certain cases. If the patient has a pacemaker, has magnetisable metal in his body or is afraid of the MRI machine because of claustrophobia, CT is the answer.
In addition, there are cases where a CT scan of the skull is preferable. These include trauma to the bones of the skull, bone deformities, and haemorrhages in the cranial cranial region. It also includes the assessment of the air resistance of the skull.
CT scans of the face and brain skull are only performed with a doctor’s referral and recommendation, as X-rays are used.
In addition to the examination of the skull, the CT scanner can also be used to examine the facial skull and paranasal sinuses. This scan can show the presence and severity of inflammation in the sinuses and frontal sinuses. In addition, ear, nose and throat specialists are often asked to do this in cases of suspected polyps or tumours. It is also a common method of diagnosing nasal septal congestion. This test rarely requires the use of contrast material.
In addition to brain and facial skull scans, targeted scans can also be performed. For the inner/middle ear area, high resolution CT is available to examine the fine inner and outer ear canal areas.
A targeted scan of the orbit is performed when trauma is involved or when a radiopaque foreign body (e.g. metal shrapnel, debris) is being sought.
Cranial CT scans are performed in the supine position and in the position indicated by the operator performing the scan.
The examination of a particular region takes 15-20 minutes, during which time immobility is required. The machine uses an X-ray beam and a donut-shaped tube to move the table during the scan.
Contrast agents are injected through a vein, a venous cannula is placed in the area of the arm or hand through which contrast agent is injected at the time of the scan. After contrast agent tests, you must remain in the institute for 30 minutes of observation from the time of injection.
Contrast media can help to obtain a better quality, more detailed image. However, contrast material can be problematic in patients with poor kidney function or those who are allergic to contrast material. Therefore, a renal function laboratory test is necessary beforehand. Afterwards, the doctor will decide whether to perform a contrast or a native test, taking into account the risk.
One of the common active ingredients in diabetes medicines, metformin, cannot be taken if contrast is used. Therefore, you should stop taking these medicines two days before the test, which can be resumed two days after the test.
Native examinations (without contrast media) do not require any special preparation, but before an examination with contrast media you should take note of the necessary preparations (see link above). Please bring your doctor’s recommendation and referral with you.
Make an appointment for a CT scan of the skull with the excellent specialists at Wáberer Medical Center or call us at +36-1-323-7000 to have the scan done at our well-equipped clinic in Buda without a long wait.
