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MRI对直肠癌局部分期的诊断价值

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MRI对直肠癌局部分期的诊断价值

作者:李维

来源:《健康必读·下旬刊》2020年第05期

【摘要】目的探讨3.0T磁共振对直肠癌术前分期的临床应用价值,以指导直肠癌的个体化治疗。方法利用3.0T磁共振对46例经结肠镜证实的直肠癌患者进行盆腔检查,然后由两名腹部影像诊断医师共同阅片,对直肠癌进行术前MR-T、N分期,然后与手术病理结果进行对照分析。结果MR-T分期正确率为86.9%(40/46),直肠癌MRI-T分期与术后病理T分期的一致性良好。N分期的正确率为73.9%(34/46),直肠癌MRI-N分期与术后病理N分期的一致性一般。结论高分辨率3.0T磁共振成像可以对直肠癌做出准确的术前局部分期。

【关键词】磁共振;直肠癌;分期;诊断价值

Abstract; Objective; The purpose of this study was prospectively to determine the accuracy and the ability to delineate lesions of high resolution magnetic resonance imaging for preoperative local staging of rectal carcinoma. So that to guide the individual treatment of patients with rectal cancer. Methods; Forty-six patients with histopathologically proven underwent preoperative Pelvic MR examination with 3.0T MRI. And then two experienced abdomen radiologists read the images together in consensus, determine preoperative T and N staging of rectal cancer. Then the MR imaging results were correlated with histopathology. Results; ;The overall accuracy of the MRI for determining T staging and regional lymph node metastases was 86.9%(40∕46), 73.9%(34∕46), respectively.. MRI - N staging has moderate consistency with pathological N staging, the kappa value = 0.57. Conclusion; Small FOV and thin-section T2WI MRI enable accurately preoperative assessment for T staging, N staging.

Key words Magnetic Resonance Imaging;Rectal carcinoma;stage;diagnostic value

直肠癌是常见的恶性肿瘤之一,在我国死亡率位居癌症死因的第4~6位。随着磁共振技术的进步,高分辨率T2WI图像在直肠术前检查中的价值越来越大[1]。MRI具有较好的T、N 分期能力的同时,还可以准确显示直肠癌TME手术相关的精细解剖结构,对于决定治疗方案的价值较大[2]。本研究主要在探讨3.0T磁共振对直肠癌术前分期的临床价值。

1 方法

1.1 一般资料

本组共收集直肠癌病例46例,其中男30例,女16例,年龄23~87岁,平均年龄58

岁。所有患者均在MR检查后1~4天内接受手术治疗并进行病理检查。

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