Abstract: Objective To compare the application value of multi-modality MR enterography and CT enterography in the diagnosis of small bowel tumor. Methods From March 2016 to March 2017, sixty patients who were suspected with small bowel tumor in our hospital were selected as the subjects. The CT and MR images were read by two qualified imaging physicians. The morphology, lesion sites (duodenum, proximal ileum, distal ileum, proximal jejunum, distant jejunum) and the range of involvement were analyzed, and the results were compared with those of surgery and endoscopic biopsy.Results Thirty-three patients (35 cases of small intestinal tumor lesions) were confirmed (5 cases of aden carcinoma, 6 cases of lymphoma, 18 cases of stromal tumor, 3 cases of neuroendocrine tumors, 2 cases of cavernous hemangioma and 1 case of lipoma) in 60 patients treated by surgery and endoscopic biopsy. The specificity, sensitivity and accuracy of CT in the diagnosis of small bowel tumor were 100% (27/27), 90.9% (30/33) and 95.0% (57/60) respectively, and MR were 100% (27/27), 97% (32/33) and 98.3% (59/60) respectively. The diagnostic efficacy was similar for both. Conclusion Both multimodality MR enterography and CT enterography are effective diagnostic methods for small bowel tumor diseases, which are worthy for clinical application.

Key words: intestinal neoplasms, magnetic resonance imaging, tomography, X-ray computed, intestine, small, Iohexol