Diagnostic RadiologyDiagnostic Radiology

At UNC REX Healthcare, we perform a wide range of diagnostic exams: general X-rays, scoliosis imaging, Sitz marker studies, metastatic bone surveys and fluoroscopy exams.

When you choose UNC REX for your diagnostic imaging needs, you are guaranteed to get excellent care by a professional. All of our X-ray technologists are certified by the American Registry of Radiologic Technologists.

Our department is also equipped with advanced digital equipment, which allows us to obtain a better image with less radiation for our patients.


We are located inside UNC REX Hospital. The best way to get to us is to enter through the Medical Office Building at 2800 Blue Ridge Road. This is the entrance between the Emergency Department and the new North Carolina Heart & Vascular Heart Hospital.


General X-Ray

  • X-rays use invisible electromagnetic energy beams to produce images of internal tissues, bones and organs on film. X-rays pass through body tissues onto specially treated plates (similar to camera film) and a "negative" type picture is made. An actual X-ray is a form of energy. You cannot feel an X-ray as it goes through the body. Several different terms, such as "film," "picture" and "X-ray" are used to describe how the image is produced.
  • X-Rays are done on a walk-in basis. There is no need to schedule an appointment.

Scoliosis Imaging

  • A scoliosis X-ray is a general X-ray that uses a small amount of radiation to create detailed images of the spine. The images are sent to a digital system that allows a radiologist to evaluate and determine if there is a curvature of the spine.
  • Scoliosis X-Rays are done on a walk-in basis. There is no need to schedule an appointment.

Sitz Marker Study

  • A colon transit study or Sitz marker study is a diagnostic test that allows your doctor to evaluate the function of your colon.
  • When you arrive for a Sitz marker study, staff will review your symptoms and allergies with you. We will then contact the on-site REX Pharmacy, and they will bring you a Sitz marker capsule to take with water.
  • This capsule contains small rings, which will show up on X-rays and let the doctors track their progress through your intestines.
  • A Sitz marker study requires an X-ray of your abdomen over several days. The number of days will be determined by your doctor. X-rays will be taken of your abdomen to see if any of the markers are left in your colon or whether they have all been expelled from the body.
  • Sitz marker studies are done on a walk-in basis. There is no need to schedule an appointment. The radiology technologist will provide you with the dates to return for the additional images.

Metastatic Bone Survey

  • A bone survey includes general X-rays of the skull, chest, spine, pelvis and long bones (humerus and femur, the largest bones in the arm and leg, respectively).
  • We prefer that you schedule an appointment for a Metastatic Bone Survey.


  • Fluoroscopy is also known as “Live X-Ray’ or an “X-Ray Movie." A continuous X-ray beam is passed through the body part being examined and is transmitted to a TV-like monitor so that the body part and its motion can be seen in detail. In barium X-rays, fluoroscopy allows the radiologist to see the movement of the barium through the body. Barium is a white, chalky powder that is mixed with water to make a thick, milkshake-like drink. Barium is used only for diagnostic studies of the esophagus, upper GI tract and lower GI tract. Barium highlights certain areas in the body to create a clearer picture.
  • Fluoroscopy exams that we perform include (but are not limited to):
    • Barium Swallow
    • Modified Barium Swallow
    • Upper GI
    • Small Bowel Follow-through
    • Barium Enema
    • Defecogram
    • Fistulogram
    • Lumbar Puncture (Spinal Tap)
    • Myelogram
    • Cystogram
    • Arthrogram
    • Joint Injection
    • Loopogram
    • IVP (Intravenous Pyelogram)
    • Nephrostogram
    • HSG (Hysterosalpingogram)
    • Chest Fluoroscopy (Sniff Test)
  • All fluoroscopy exams are done by appointment only.
  • A technologist will call you 1-3 days prior to your scheduled appointment to discuss details of the exam and any steps that you need to do to prepare.

When can I expect results?

Following your exam, one of our radiologists will review all images and get a report sent to your doctor within 1-3 days. Your doctor will review the results with you. You can also view your results on My UNC Chart 14 days after the exam is completed.

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Diagnostic Scheduling

Copy of Images

Copy of Report

Estimated Cost of Exam

General X-Ray Questions

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