Diagnostic and Screening Testing

The Gastrointestinal Surgery team offers a variety of diagnostic and screening testing options to its patients including:

  • Barium Enema
    The barium enema is done either through the rectum or an ostomy. A contrast material called barium fills the opening and a radiologist can see the images of the rectum, colon or small intestine. Patients drink clear liquids for 24 hours before the procedure.
  • CT (CAT) Scan
    The computer-aided tomography scan is non invasive imaging that uses X-ray and computers to make images of the internal organs. Before a scheduled CT scan, patients should not eat or drink for four hours.
  • Defecography
    Defecography is an X-ray that allows the radiologist to see the anatomy and function of the rectum and pelvic floor. Patients drink clear liquids for 24 hours before the exam and also use two Fleet enemas the night before the exam.
  • High Definition Anorectal Manometry
    Anorectal manometry measures contractility in the anus and rectum by inflating a small catheter in the rectum. The high definition quality allows for 3D views. Patients use two Fleet enemas the night before the procedure.
  • Loopogram
    A loopogram is a specialized X-ray that shows the loop (J-pouch) of the small intestine and any leaks or narrowing. Patients cannot eat or drink anything after midnight the night before the test.
  • Magnetic Resonance Enterography (MRE)
    MRE is a non-invasive imaging performed with a contrast material to produce images of the small intestine. It uses magnets to produce high quality pictures. Patients drink clear liquids for 24 hours before the procedure.
  • Ultrasound
    Diagnostic ultrasound testing uses high frequency sound waves to produce images of structures within the body. Patients cannot eat or drink for six hours before the scan.


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