Multi-Row Computed Tomography (CT)

Computed Tomography is a specialized form of x-ray, resulting in cross-sectional computerized images and occasionally 3-Dimensional images of your head or body. We provide CT services at RMG's Encinitas Imaging Center and RMG's First and Laurel Imaging Center.

CT is most often used today to evaluate problems in the para-nasal sinuses, chest, abdomen, and pelvis. It is also often used to assess bony problems in the spine or extremities, or for evaluation of certain types of hearing loss (conductive hearing loss). In addition CT is often used to facilitate a needle biopsy procedure.

How Does CT Work?
You will be asked to lie on a table, which will gradually move within a doughnut shaped scanner. The scanner takes specialized x-rays through your body that help generate high resolution images that each look like a "slice" of your body.

In some cases, prior to the exam, an intravenous line may be started in your arm so that you can be given x-ray dye. This dye contains iodine and can result in allergic or adverse reactions in the minority of cases. If dye will be required for your exam, you will be given a consent form to inform you about this procedure, and your technologist will also verify that you understand the injection procedure. Please inform us promptly if you have known allergies to iodine, kidney or cardiac problems, asthma, or known allergy to x-ray dye. If so, you may be given a CT scan without dye, you may be a candidate for an alternative examination (MRI or Ultrasound), you may be given a pre-medication to prevent allergy, or you may be re-scheduled for another day or location. If you have any questions, feel free to ask to speak to the radiologist.

The examination will take 15 minutes to one hour, during which you may be given special breathing instructions by the technologist. The images will be processed by computers and then read by your RMG Radiologist, who will promptly issue a complete report to your referring doctor. In many cases, your referring physician may also view the images on a personal computer in his or her office.

CT Guided Biopsies
In some cases, CT is used as image guidance for a biopsy procedure. In this event, your RMG radiologist will first obtain your informed consent and fully explain the procedure, alternatives, and risks. Needle biopsies generally proceed as follows:

CT is used to identify and localize the area of interest. The overlying skin is cleaned and covered with a sterile drape. Local anesthetic (lidocaine) is injected into the skin and underlying tissues to create a "numb" spot. A needle is placed into the targeted tissue. CT is used to confirm the needle placement and any required adjustments are made. Two or more biopsy specimens are then obtained. You are observed for 1-2 hours or more as needed to make sure you have tolerated the procedure well.

If you think you might have sustained any problem or complication from a biopsy or imaging procedure, call us. We want to hear from you so we can help you. (619) 849-XRAY (9729)