Addition of diffusion-weighted imaging can improve diagnostic confidence in bowel MRI

作者：Kinner S^*; Blex S; Maderwald S; Forsting M; Gerken G; Lauenstein T C

来源：Clinical Radiology, 2014, 69(4): 372-377.

DOI：10.1016/j.crad.2013.09.022

AIM: To evaluate whether the addition of diffusion-weighted imaging (DWI) in bowel abdominal magnetic resonance imaging (MRI) can improve diagnostic confidence. %26lt;br%26gt;MATERIALS AND METHODS: One hundred and eleven consecutive patients with suspected or known inflammatory bowel disease (n = 59), tumour disease (n = 31), unspecific abdominal pain (n = 16), and suspected graft-versus-host disease (n = 5) underwent bowel MRI using a 1.5 T MRI machine. In addition to T2-weighted (T2W) and contrast-enhanced T1-weighted (CE-T1W) data, axial and coronal DWI sequences were collected (b = 50, 500, 1000). Diagnostic confidence for lesion detection with and without DWI was evaluated using a four-point Likert scale [1 = certainly no lesion(s), 2 = probably no lesion( s), 3 = probably lesion(s), 4 = certainly lesion(s)]. %26lt;br%26gt;RESULTS: In 11 of 111 patients (10%), the diagnostic confidence was improved by DWI. In seven patients, readers changed their diagnosis from %26quot;probable%26quot; to %26quot;certain presence of lesions%26quot;. In another four patients, lesions were diagnosed based on DWI, which were not delineated on CE-T1W and T2W imaging. %26lt;br%26gt;CONCLUSION: DWI of the bowel can provide additional information to the reader and, therefore, improve diagnostic confidence. Hence, additional DWI should be integrated into a standard bowel MRI protocol.

• 出版日期2014-4