CT Scan of the Internal Auditory Canal

Your doctor has requested a computed tomography scan (CT or CAT) of your internal auditory canal. This computer tomography technology, called cross-sectional imaging, allows the radiologist to look at different levels, or slices, of the skull bones leading from the ear using a rotating X-ray beam. In looking at these slices, the radiologist is able to assess skull bones for injury, infection, fluid levels and abnormalities. Our team of expert physicians, nurses and technologists is led by Barry Pressman, MD, Chief, Neuroradiology and Head and Neck Radiology.

Why Choose the S. Mark Taper Foundation Imaging Center for a CT study

Before Arriving for Your Procedure

Patients who are diabetic and taking Glucophage will need clearance from their ordering physician before the exam.

If your exam includes an intravenous injection (injection in a vein in your arm), you will be instructed not to eat or drink anything four hours before your exam.

Blood tests may also be required prior to the administration of contrast materials.

Please leave your jewelry and valuables at home.

Although we do not anticipate any delay in your scheduled appointment, we recommend that you bring a book, a magazine or a music player to help pass any time you may have to wait.

After Arriving

A radiology nurse or technologist will ask you a few questions regarding your medical history.

If you are receiving contrast, a nurse or technologist will insert a small IV in your arm.

You must inform the technologist, radiology nurse and/or physician of any allergies you may have before your exam.

During Your Procedure

This procedure is done in two positions.

For both positions, the head is positioned in a holder, and the patient is required to hold very still.

For the first position, patients lie on their backs with arms at the sides.

For the second position, the patient lies on their stomach with the head resting on the chin. Arms are positioned at the sides.

Only the patient's head is covered by the scanner, and the scanner is open at the back and the front, allowing the patient to see out.

This procedure usually takes approximately 30 minutes.

After Your Procedure

There are no restrictions placed on you after this procedure. You may eat or drive as normal.

If you received an injection of contrast dye, you should drink plenty of liquid to help flush it out of your system.

Your study will be read by an imaging physician who specializes in the interpretation of CT scans. The results will be sent to your physician, usually within 48 hours.

Your physician will discuss these results with you and explain what they mean in relation to your health.

Directions and Parking Information 

For more information or to schedule an appointment, please call (310) 423-8000.

The S. Mark Taper Foundation Imaging Center provides a full range of advanced imaging, both radiology and cardiology, as well as interventional radiology and interventional tumor (oncology) treatments to the greater Los Angeles area, including Beverly Hills, Encino, Mid-Cities, Sherman Oaks, Silver Lake, Studio City, Toluca Lake, and West Hollywood.