CT Scan 

Why?

Computed tomography (CT) is a medical imaging method using X-ray tomography created by computer processing. It provides important diagnostic information in various anatomical planes. The main advantage over MRI scanning is that it demonstrates bone as well as soft tissue features. A temporal bone CT scan may therefore show details of bone abnormalities of the inner ear,  such as a labyrinthine fistula, or developmental problems affecting the labyrinth, such as a dilated vestibular aqueduct.

How?

The scanning techniques involves lying still with the head in a medical “hair-dryer”-like capsule for approximately 20 minutes. It is a completely painless procedure.