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Advantages and disadvantages

Virtual Colonoscopy
Advantages
  • It is a minimally invasive procedure
  • It has a markedly lower risk of perforating the colon than conventional colonoscopy
  • You can be spared from having to undergo a full colonoscopy
  • It uses a short flexible rectal tube rather than a larger less flexible tube to view the bowel walls
  • It is an excellent alternative for patients who have clinical factors that increase the risk of complications from colonoscopy (such as treatment with blood thinners or severe breathing problems)
  • It is helpful when colonoscopy cannot be completed because the bowel is narrowed or obstructed for any reason, such as by a large tumor
  • It provides clearer and more detailed images than a conventional barium enema x-ray examination
  • You will not need sedation
  • It has a more rapid exam time (10-20 minutes)
  • It has reduced risk of complications
  • It has the ability to examine your entire colon
  • Its virtual ‘CT Scope” scan be turned around to look behind a fold of the large bowel

Disadvantages
  • Full preparation is still needed
  • It cannot remove polyps during testing
  • Colonoscopy will be needed if results are abnormal
  • There is a small risk of perforation the colon with air or CO2
  • If IV contrast is given, some individuals may have an allergic reaction
  • This test is not suitable for pregnant patients because of the use of radiation


  

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