Abstract：Objective:To explore the clinical application of MR colonography(MRC). Methods:Multi-planar, multi-sequence and contrast-enhanced MRI scanning were performed in 167 patients proved by colonoscopy or surgical pathology. Intestinal canal preparation should be done before all the examinations, and then infused with 1200～1800ml physiological saline immediately before study by anus. MRI diagnosis and image features were compared with colonoscopy or surgical pathology results.Results:Among the 167 patients with MR, 147cases were correctly diagnosed, misdiagnosis in 15 cases, missed diagnosis in 5 cases. The diagnostic accuracy of MR colonography was 88.02%. MR major signs of colon malignancy were a localized thickening of the bowel wall, soft tissue mass, associated with intestinal stricture; Colon benign tumors performed as nodules or masses with finishing edge; Colitis lesions showed a lump or widely thickening of intestinal wall. Usually its boundary was not clear and the signal was uneven.Conclusions:High quality magnetic resonance image has a higher accuracy of detection and qualitative diagnosis of colorectal lesions, which can provide important guiding significance for clinical diagnosis and treatment.
2013, Vol. 18 
