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中华结直肠疾病电子杂志 ›› 2018, Vol. 07 ›› Issue (05) : 431 -436. doi: 10.3877/cma.j.issn.2095-3224.2018.05.005

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论著

高分辨薄层直肠核磁共振新序列(3.0T RESOLVE-DWI)在直肠癌临床分期中的价值评估
丁静静1, 罗金龙2, 曾瑞腾3, 孙家瑜3, 邢丽红3, 张洪静3, 刘雪婷1, 李媛3,(), 杨烈1,(), 周总光1   
  1. 1. 610041 成都,四川大学华西医院胃肠外科
    2. 610041 成都,四川大学华西医院胃肠外科;643000 自贡,自贡市第四人民医院胃肠外科
    3. 610041 成都,四川大学华西医院放射科
  • 收稿日期:2017-07-27 出版日期:2018-10-25
  • 通信作者: 李媛, 杨烈
  • 基金资助:
    国家自然科学基金面上项目(No.8147204); 四川省科技厅应用基础研究重点项目(No.2017JY0020)

Evaluation of high resolution thin slice rectal magnetic resonance imaging (3.0T RESOLVE-DWI) in clinical staging of rectal cancer

Jingjing Ding1, Jinlong Luo2, Ruiteng Zeng3, Jiayu Sun3, Lihong Xing3, Hongjing Zhang3, Xueting Liu1, Yuan Li3,(), Lie Yang1,(), Zongguang Zhou1   

  1. 1. Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
    2. Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Gastrointestinal Surgery, Zigong NO.4 People′s Hospital, Zigong 643000, China
    3. Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
  • Received:2017-07-27 Published:2018-10-25
  • Corresponding author: Yuan Li, Lie Yang
  • About author:
    Corresponding author: Li Yuan, Email:
    Yang Lie, Email:
引用本文:

丁静静, 罗金龙, 曾瑞腾, 孙家瑜, 邢丽红, 张洪静, 刘雪婷, 李媛, 杨烈, 周总光. 高分辨薄层直肠核磁共振新序列(3.0T RESOLVE-DWI)在直肠癌临床分期中的价值评估[J/OL]. 中华结直肠疾病电子杂志, 2018, 07(05): 431-436.

Jingjing Ding, Jinlong Luo, Ruiteng Zeng, Jiayu Sun, Lihong Xing, Hongjing Zhang, Xueting Liu, Yuan Li, Lie Yang, Zongguang Zhou. Evaluation of high resolution thin slice rectal magnetic resonance imaging (3.0T RESOLVE-DWI) in clinical staging of rectal cancer[J/OL]. Chinese Journal of Colorectal Diseases(Electronic Edition), 2018, 07(05): 431-436.

目的

探讨高分辨薄层直肠MRI新序列(3.0T RESOLVE-DWI)在直肠癌术前临床分期中的准确性。

方法

回顾性分析四川大学华西医院75例行术前高分辨薄层直肠MRI新序列扫描的直肠癌根治性切除术的病例,分析MRI影像中肿瘤浸润深度(T),并测量肿瘤及周围淋巴结(N)的表观弥散系数(ADC)值。以术后病检结果为金标准,分析MRI评估T分期的准确性,ADC值与肿瘤T、N分期及分化程度的相关性。

结果

MRI从T1到T4期的诊断准确性在未行新辅助治疗的患者中分别为0%、38.1%、72%、14.3%(κ=0.200),在行新辅助治疗的患者中分别为50%、33%、75%、0%(κ=0.270)。肿瘤ADC值与T分期(F=0.074,P=0.929;F=0.737,P=0.496)、肿瘤分化程度(F=1.889,P=0.783;F=4.385,P=0.627)在两组均无显著相关性。在未行新辅助治疗的患者中,淋巴结ADC值在术后病理淋巴结阳性组高于淋巴结阴性组(F=0.073,P=0.012),而在新辅助治疗组差异无统计学意义(F=0.035,P=0.793)。

结论

直肠癌高分辨薄层MRI新序列对T3期直肠癌的诊断准确率高,整体准确率较低;新序列ADC值对于直肠癌N分期的评估具有一定价值,还需进一步研究验证。

Objective

To evaluate the efficacy of MRI of high resolution layer in rectal cancer at 3.0T magnetic resonance (MR) for diagnosing rectal cancer, and analyze the relationship between apparent diffusion coefficient (ADC) values and pathological results of tumor.

Methods

We retrospectively analyses 75 patients with radical surgical and pathological proved rectal cancer. All patients received high resolution layer rectal 3.0T MRI, to evaluate the correlation between MRI and pathology by estimating invasive depth and measuring the ADC value in different type of group.

Results

The diagnostic accuracy of high resolution layer rectal MRI for pathological changes in T1, T2, T3, and T4 was 0%, 38.1%, 72%, 14.3% in the group of non-preoperative therapy, and 50%, 33%, 75%, 0% in the group of preoperative therapy. There was poor consistency between T stage of MRI and pathology whether in group of non-preoperative therapy (κ=0.200) or preoperative therapy (κ=0.270). There was no significant correlation between the ADC value of tumors and groups of various T stage. There was also no significant correlation between the ADC value of tumors and groups of various differentiation grades. Non-preoperative therapy group (F=0.074, P=0.929; F=0.737, P=0.496) and preoperative therapy group (F=1.889, P=0.783; F=4.385, P=0.627). There was a significant difference between the patients with lymph metastasis and those without lymph metastasis in non-preoperative therapy group (F=0.073, P=0.012), and there was no significant difference in preoperative therapy group (F=0.035, P=0.793).

Conclusion

The diagnostic accuracy of high resolution layer rectal MRI for pathological changes in T3 is high, but the overall accuracy rate is low. ADC value of high resolution layer rectal MRI has some value in evaluated the lymph metastasis and need further study.

图1 为ADC图。1A:男,60岁,肿瘤位于直肠上段,病理分期:pT3,病灶ADC值:1 056.00±457.59;1B:男,83岁,肿瘤位于直肠中上段,病理分期:pT3,ADC值702.00±441.46;1C:男,61岁,图中所示结节:编号1、位于乙状结肠系膜区,直径8 mm,ADC值1 194.00±235.28;编号2、位于乙状结肠系膜区,直径5 mm,ADC值902.00±122.61;编号3、位于乙状结肠系膜区,直径5 mm,ADC值1 196.00±121.59,病理分期:pN1c
表1 MRI T分期与病理T分期比较
图2 ADC值鉴别直肠癌有无淋巴结转移的ROC曲线
表2 ADC值与T分期关系
表3 ADC值与直肠癌分化程度和N分期关系
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