目的 探讨超声、MRI与CT在胃肠 道淋巴瘤诊断中的应用价值。方法 选取 2011年1月-2016年5月我院收治的21例胃 肠道淋巴瘤患者为对象，均行超声、MRI 与CT在胃肠道淋巴瘤扫描检查，观察胃肠 道淋巴瘤影像学表现，以组织活检病理结 果为金标准，评估超声、MRI与CT对胃肠 道淋巴瘤的诊断价值。结果 MRI诊断胃肠 道淋巴瘤的准确率为95.24%，较超声诊断 的准确率80.95%、CT诊断的准确率90.48% 高；胃肠道淋巴瘤经超声、MRI、CT检查 均有特征性影像学表现，MRI扫描中仅平 扫即可直观地观察胃黏膜完整性，对病 变定性诊断有一定参考价值，较CT及超 声具有更明显优势，此外MRI扫描检查中 T1WI、T2WI可清晰显示胃浆膜情况，利于 肿瘤浸润深度的判断。结论 在胃肠道淋 巴瘤分类诊断中，MRI诊断的准确率较CT 及超声更高，可临床推广应用。

Objective To investigate the value of ultrasound, MRI and CT in the diagnosis of gastrointestinal lymphoma. Methods A total of 21 patients with gastrointestinal lymphoma who were admitted to the hospital from January 2011 to May 2016 were selected as the subjects. All patients were examined by ultrasonography, MRI and CT. Imaging findings of gastrointestinal lymphoma were observed. The diagnostic value of ultrasound, MRI and CT for gastrointestinal lymphoma was evaluated with the pathological findings of tissue biopsy as the golden standard. Results The accuracy rate of MRI in the diagnosis of gastrointestinal lymphoma (95.24%) was higher than that of ultrasound (80.95%) or CT (90.48%). Imaging findings of gastrointestinal lymphoma diagnosed by ultrasound, MRI and CT were characteristic. MRI plain scan only can visually display the gastric mucosal integrity, with certain reference value for the qualitative diagnosis of lesions. Compared with CT and ultrasound, it has more obvious advantages. In addition, T1WI and T2WI of MRI scancan clearly show the situation of gastric serosa, which was conductive to determining the depth of tumor invasion. Conclusion In the classification diagnosis of gastrointestinal lymphoma, the accuracy of MRI is higher than that of CT or ultrasound. It is suitable for clinical application.