Role of MRI in Crohn's disease

Interobserver and intermodality agreement for detection of small bowel Crohnʼs disease with MR enterography and CT enterography

“…12,13 Poorly distended bowel loops can mask CD but also mimic inflammation because of bowel wall thickening and mural hyperenhancement in collapsed bowel segments. 22 MR and CT enteroclysis provide excellent distension of the small bowel with detailed images of the intestinal lumen, bowel wall, and extraintestinal surroundings.…”

“…11 In both MRE and CTE, bowel wall thickening and hyperenhancement are common findings in patients with CD. 12,13 There is a lack of studies comparing MRE and CTE for the diagnosis of small bowel CD. In a recent prospective study by Siddiki et al, 14 MRE and CTE had similar sensitivities above 90% for detection small bowel CD.…”

Prospective comparison of computed tomography enterography and magnetic resonance enterography for assessment of disease activity and complications in ileocolonic Crohnʼs disease

“…[12][13][14][15][16][17][18][19][20][21][22][23][24] CT shows a high level of accuracy for evaluation of disease involvement of the small bowel. CT findings regarding bowel wall enhancement and thickening correlate with endoscopic and histologic findings.…”

The Role of Imaging in Inflammatory Bowel Disease Evaluation

“…Many of the imaging characteristics of active CD on MRI, as one may expect, are morphologically identical to those appreciated on CT. For example, bowel wall thickening greater than 3mm is considered abnormal and evidence of active inflammation. Active disease with intramural edema manifests as T2 hyperintensity between the mucosa and muscularis propria ( Figure 5A) (Sinha et al, 2009). Mucosal hyperenhancement is also an important marker of active disease.…”