Diagnostic Value of MR Enterography and Diffusion Weighted Imaging in Crohn Disease
- VernacularTitle:磁共振肠道造影联合扩散加权成像在克罗恩病诊断中的价值
- Author:
Yanhong YANG
;
Siyun HUANG
;
Li HUANG
;
Jinjiang LIN
;
Xuehua LI
;
Shiting FENG
;
Canhui SUN
;
Ziping LI
- Keywords:
Crohn disease;
MR enterography;
diffusion weighted imaging
- From:
Journal of Sun Yat-sen University(Medical Sciences)
2017;38(3):448-452
- CountryChina
- Language:Chinese
-
Abstract:
[Objective] To analyze the image findings of MR enterography (MRE) and diffusion weighted imaging (DWI) in Crohn disease (CD) and to discuss the diagnostic value of MRI for evaluating the activity of CD.[Methods] 26 patients proved by clinical,imaging and pathological data were enrolled in this study.The intra-/extra-intestinal image features of CD were retrospectively analyzed,and the intestinal lesions were evaluated by MRE+DWI scoring system.The differences in image features of active and inactive CD were compared.[Results] 26 bowel segments were evaluated and included active (n =20) and inactive CD (n =6).The intestinal performance of CD included wall thickening,T2WI hyperintensity and hyperenhancement.The pathological changes of active CD were more serious when comparing with that of inactive CD.DWI showed hyperintensity in the affected bowel wall.ADC of active C D [(0.9 ± 0.2) × 10-3 mm2/s] was significantly lower than that of inactive CD [(1.5 ± 0.4)× 10-3 mm2/s] (P ＜ 0.001).Extra-enteric performance of active CD included comb sign,lymphadenectasis of mesentery,mesenteric exudation,fistula and abdominal abscess.[Conclusion] MRE combined with DWI can accurately assess CD activity and diagnose extra-enteric complications.
