Diagnostic Radiology

Diagnostic Radiology

Wake Radiology UNC REX Healthcare performs a wide range of outpatient diagnostic exams including general X-rays, scoliosis imaging, Sitz marker studies, metastatic bone surveys and fluoroscopy exams.


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.

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