The diagnostic evaluation of magnetic resonance enteroclysis in inflammatory bowel disease

Abstract

Objective This study aims to investigate diagnosis accuracy of magnetic resonance enteroclysis (MRE) and evaluation of image quality in inflammatory bowel disease (IBD). Methods A total of 132 patients were assumed inflammatory bowel disease and their MRE were retrospectively evaluated. Imaging feature of MRE and histopathologic results by surgery and endoscope were compared. The sensitivity, specificity and diagnostic performance were calculated and image quality of MRE were evaluated by using the quadrature method. Results A total of 530 small intestine segments were analyzed according to evaluation criteria. Imaging quality of 323, 170, 29 and 8 small intestine segments were graded 1, 2, 3 and 4 respectively. Consistency for scoring of imaging quality and evaluation of IBD in intestine segments between observers was pretty good (k=0.73). Scoring of imaging quality was the highest in distal ileum (1.12) and terminal ileum(1.15) and scoring was the lowest in duodenum (1.92) and jejunum(1.6). The sensitivity, specificity and diagnostic agreement rate of MRE in inflammatory bowel disease were 94.3%, 92.6% and 94.7% respectively, including 2 false positive and 6 false negative result. Conclusions MRE can provide high performance in diagnosis of inflammatory bowel disease and good image quality. Key words: Inflammatory bowel diseases; Colitis, ulcerative; Crohn disease; Contrast media; Fluoroscopy; Magnetic resonance imaging