CT Of The Petrous Bones

  • It evaluates the external, middle and inner ear structures with high resolution imaging of the dense petrous bone structures defining the anatomy of this complex region and helping in evaluation of different pathological processes

  • Patients with history of hearing problems or ear infection.

  • Patients with congenital anomalies or preparing for surgery.

  • Cases of post traumatic complaints related to the ear as bleeding, vertigo or deafness.

  • Cases with facial nerve palsy.

  • Pre cochlear implantation.

  • Pregnant women particularly in the first trimester to avoid harmful effects of ionization radiation on the fetus. It can be carried out for pregnant women only in critical situations after discussion of the potential risks, obtaining informed consent and using abdominal lead aprons.

  • Patients who have a known allergy to the intravenous contrast media, patients with impaired renal functions should avoid contrast enhanced study but can perform routine non contrast study safely

  • IV contrast administration in inflammatory and neoplastic conditions.

  • Your physician may request MRI study to get more information about the disease nature and extension

  • No preparation needed for the non-contrast study.

  • Patient should be food fasting 4-6 hrs before the exam in case of contrast enhanced study only. Adequate hydration is needed and recent kidney function test should be available at the time of your examination

CT can scan the petrous bones in less than a minute while the patient is lying comfortably on CT table.


The examination is done on one of our highly advanced CT machines available in our branches

  • No after care or precautions needed following non contrast enhanced study.

  • In case of contrast enhanced study drinking plenty of water is advised to help to wash out the injected IV contrast material out of your body except if you are on fluid balance for renal or cardiac condition you may consult your physician and in case of lactating mothers it is advised to escape lactation for 24 hrs after the contrast injection.

  • In very rare cases some patients may experience contrast allergic reaction after IV contrast injection so if you have any previous history of allergy to IV contrast media it is safer to perform the exam without IV contrast