A rigid probe, the approximate diameter of a nickel, is placed in the rectum by a trained physician. The anatomy is then examined on the ultrasound equipment. Biopsies may be taken if the physician determines the need. The patient is only occasionally sedated for this procedure. The procedure takes approximately 10 - 30 minutes to perform.
In most cases, 2 fleets enemas 1 hour apart prior to the procedure are required. The patient may be allowed to have a liquid breakfast depending on the physician's requirements.