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Patient prep for a Virtual Endoscopy varies depending on where in the body the patient is getting the procedure done. Since there is an MRI the patient will be given a oral contrast solution to get a clearer view.
For a Virtual Colonoscopy, prep is done similar to a regular colonscopy. The patient must fast 24-48 hours before the procedure. The doctor will prescribe a oral laxitive solution to clean out the bowel and the patient should drink only clear liquids. Liquids should be discontinued 6-8 hours before the procedure takes place.
The patient should be cautious as this test should not be done if they are pregnant and/or have any metal in the body since the MRI is very sensitive to metal due to magnetic pulses put out.
This is a virtual image of the inside of the colon showing a polyp in 2 different views.
Virtual Endoscopies can detect a wide range of malignancies in the multiple different ways endoscopies can be performed.
An imaging technique in which cross-sectional images acquired by computed tomography or magnetic resonance imaging are processed by a computer. The computer will reconstruct a three-dimensional display similar to that seen through an endoscope of internal organs such as the bowel, colon, stomach, lungs and esophagus.
Virtual Gastrointestinal Endoscopy:
Virtual Colonoscopy:
Virtual Bronchoscopy:
This video shows the different features of internal organs seen in virtual endoscopy
Virtual endoscopies utilize both CT or MRI imaging and computer algorithms in order to
recreate a real time 3D image of internal anatomy. This allows physicians to view tissue shape through and beyond an organ and its walls whereas a regular endoscopy can only view the inner surface. The procedure is non-invasive, and requires no sedatives.
There are some advantages and disadvantages to this procedure compared to others. Here is an example of Virtual Colonoscopy.
Advantages:
Disadvantages: