An MRI (magnetic resonance imaging) is an imaging machine that uses a large magnet, a computer and radio waves to look inside the body. The MRI exam is painless and requires very little preparation. The exam can last from 30 minutes to over an hour depending on what your doctor orders.

IMPORTANT! Please alert the scheduling representative if you have a pacemaker, brain aneurysm clips or other mechanical implanted devices.

CT Scan

The CT scan obtains multiple cross-sectional images of your body by using special x-rays and computer enhancement, creating an image many times more sensitive than the image from a conventional x-ray. The exam will generally last a few minutes to 1 hour depending on what your doctor has ordered.

Inform your doctor and the scheduler if you have ever had an allergic reaction to intravenous (IV) dye or any other allergies to medications especially iodine.


Ultrasound utilizes sound waves to view the structures in the area being scanned. For most exams you will be asked to change into a gown. The technologist will have you lie comfortably on the exam table and put a warm water-soluble gel on the area to be imaged. A camera-like device called a transducer will be moved around as needed to visualize the areas ordered by your doctor. 


An X-ray is a quick painless test that produces images of the structures inside your body. X-ray beams can pass through your body but they are absorbed in different amounts depending on the density of the material they pass through. The amount of radiation you are exposed to during an x-ray is so small that the risk of any damage to cells in your body is extremely low.

If you are pregnant or suspect you might be pregnant, please inform your doctor or the technologist performing the x-ray prior to having it done. The risk of most diagnostic x-rays to an unborn baby is small, but your doctor may consider another imaging test.


Bone densitometry, also called dual-energy x-ray absorptiometry or DEXA, uses a very small dose of ionizing radiation to produce pictures of the inside of the body (usually the lower spine and hips) to measure bone loss. It is commonly used to diagnose osteoporosis and to assess an individual’s risk for developing fractures. DEXA is simple, quick and noninvasive. It’s also the most accurate method for diagnosing osteoporosis.

Tell your doctor and the technologist if there is a possibility you are pregnant or if you recently had a barium exam or received an injection of contrast material for a CT or radioisotope scan.

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Crown Valley Imaging - Mission Viejo

27401 Los Altos, Suite 180, Mission Viejo, CA 92691


Opening Hours: M-F 8am to 8pm

Saturday MRI only: 8am to 4:30pm

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Crown Valley Imaging - Newport Beach/Irvine

4501 Birch St, Suite C, Newport Beach, CA 92660

*3 Tesla MRI only*

Opening Hours: M-F 8am to 4:30pm

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