Why is MRI the study of choice for evaluation and management of perianal Crohn disease?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Answer

MRI is the study of choice for evaluation and management of perianal Crohn disease. It can be superior to CT in demonstrating pelvic lesions. In addition, MRI can be used when ionizing radiation is contraindicated and in children and pregnant women (if done without gadolinium). [65] Compared with CT, MRI of the pelvis can more accurately detect pelvic and perianal abscesses, as well as better categorize fistula anatomy and activity.


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