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目的:分析MR弥散加权成像评价直肠癌淋巴结转移的临床价值。方法:对50例直肠癌患者行MRI常规序列及弥散加权成像检查,对比术后病理检查,确认转移性和非转移性淋巴结。结果:MRI常规序列结合DWI的诊断准确率为71.9%,敏感性34%,特异度是77.5%;无转移淋巴结的ADC值与转移性淋巴结ADC值数据差异对比(P<0.05)。结论:磁共振常规序列结合DWI可有效鉴别直肠癌淋巴结有无转移,临床价值高。
Objective: To analyze the clinical value of MR diffusion weighted imaging in the evaluation of lymph node metastasis of rectal cancer. Methods: Fifty patients with rectal cancer underwent routine MRI and diffusion-weighted imaging, and postoperative pathological examination was performed to confirm the metastatic and non-metastatic lymph nodes. Results: The diagnostic accuracy of routine MRI combined with DWI was 71.9%, the sensitivity was 34% and the specificity was 77.5%. The ADC value of non-metastatic lymph nodes was significantly different from that of metastatic lymph nodes (P <0.05). Conclusion: The combination of magnetic resonance conventional sequence and DWI can effectively identify the presence or absence of lymph node metastasis in rectal cancer with high clinical value.