Virtual colonoscopy

Colonoscopia virtual_1Colonoscopia virtual_2

Virtual colonoscopy is a non-invasive technique that allows three-dimensional and two-dimensional visualisation of the large intestine or colon by taking sequential images captured with a state-of-the-art MDCT scanner. The quality of the images allows virtual navigation through the rectum and colon thanks to processing on specialised workstations. Preparation for the test consists of following a low-fibre diet for three days before the test (to cleanse the colon and rectum) and ingesting an iodinated oral contrast agent the day before the test (to mark the stool so that it can be correctly distinguished from any colonic lesions). Unlike fibrocolonoscopy, no sedation or bowel preparation is required. The test is performed in the CT room, where air is blown through a small flexible tube to distend the colon.