Patient Information
Tests and Treatments: Diagnostic Tests: Diagnostic Radiology: Sphincterography
Sphincterography is an x-ray to evaluate voluntary muscle strength and relaxation. Sphincterography uses a flexible balloon connected to a bag of liquid barium. The pressure inside the balloon is equal to the height of the barium bag above the balloon. The higher the bag, the higher the balloon pressure.
The person lies on his left side and a deflated balloon is inserted into the anal canal and rectum. Barium fills the balloon. X-rays are taken while the person squeezes, relaxes, and pushes. These x-rays tell how strong the sphincter is and if it relaxes properly.
Page last updated
12/01/2006
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