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Physics, Techniques and Procedures

Defaecography

also named evacuation proctography and videoproctography, a functional radiographic examination of voluntary rectal evacuation. After bowel preparation, the rectum is filled with at least 120 ml of thick barium paste (e.g. oesophagus cream), injected from a large syringe through a catheter introduced into the rectum. The patient is then placed sitting sideways on a special commode placed on the foot rest of the examination table with the table in an upright position. The fluoroscopic examination is video recorded with the patient at rest, during contraction, straining and active evacuation.

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