What is the role of ultrasonography in the diagnosis of inflammatory bowel disease (IBD)?

Updated: Oct 17, 2017
  • Author: William A Rowe, MD; Chief Editor: BS Anand, MD  more...
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Answer

Ultrasonography (US) is a non-invasive technique in diagnosing Crohn disease. Although this technique has a sensitivity of 84% and a specificity of 92%, it has less accuracy when disease is located proximal to the terminal ilium. [62] Ultrasonography, magnetic resonance imaging (MRI), and computed tomography (CT) scanning have similar accuracy for the entire bowel and are reliable in identifying fistulas, abscesses, and stenosis; however, US may lead to false positives for abscesses. US and MRI are often preferred over CT scanning because of the lack of radiation risk, especially in younger patients. [62]


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