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中华消化病与影像杂志(电子版) ›› 2021, Vol. 11 ›› Issue (03) : 111 -116. doi: 10.3877/cma.j.issn.2095-2015.2021.03.003

所属专题: 文献

临床研究

基于多参数MRI影像组学模型预测直肠腺瘤癌变的研究
李盼盼1, 贾玉萍2, 吴瑞3, 洪宇2, 宋歌声4, 李爱银4,()   
  1. 1. 250014 济南,山东第一医科大学第一附属医院(山东省千佛山医院)影像科;250012 济南,山东大学临床医学院
    2. 250000 济南,山东第一医科大学研究生院
    3. 250012 济南,山东大学临床医学院
    4. 250014 济南,山东第一医科大学第一附属医院(山东省千佛山医院)影像科
  • 收稿日期:2020-12-04 出版日期:2021-06-01
  • 通信作者: 李爱银
  • 基金资助:
    济南市科技计划(201907034)

A Multiparametric MRI-Based Machine Learning Model for Preoperatively Prediction of canceration ofrectal adenoma based on multi-parameter MRI imaging omics model

Panpan Li1, Yuping Jia2, Rui Wu3, Yu Hong2, Gesheng Song4, Aiyin Li4,()   

  1. 1. Department of Radiology, First Affiliated Hospital of Shandong First Medical University&Shandong Provincial Qianfoshan Hospital, Jinan 250014, China; School of Clinical Medicine, Shandong University, Jinan 250012, China
    2. Graduate School, Shandong First Medical University, Jinan 250000, China
    3. School of Clinical Medicine, Shandong University, Jinan 250012, China
    4. Department of Radiology, First Affiliated Hospital of Shandong First Medical University&Shandong Provincial Qianfoshan Hospital, Jinan 250014, China
  • Received:2020-12-04 Published:2021-06-01
  • Corresponding author: Aiyin Li
引用本文:

李盼盼, 贾玉萍, 吴瑞, 洪宇, 宋歌声, 李爱银. 基于多参数MRI影像组学模型预测直肠腺瘤癌变的研究[J]. 中华消化病与影像杂志(电子版), 2021, 11(03): 111-116.

Panpan Li, Yuping Jia, Rui Wu, Yu Hong, Gesheng Song, Aiyin Li. A Multiparametric MRI-Based Machine Learning Model for Preoperatively Prediction of canceration ofrectal adenoma based on multi-parameter MRI imaging omics model[J]. Chinese Journal of Digestion and Medical Imageology(Electronic Edition), 2021, 11(03): 111-116.

目的

基于多参数MRI影像组学模型预测直肠腺瘤癌变。

方法

回顾性分析山东省千佛山医院2016年11月至2018年12月46例经病理证实为直肠腺瘤(n=25)和直肠腺瘤癌变患者(n=21)。所有患者均在术前2周接受盆腔MRI检查,包括高分辨率T2WI序列及弥散加权成像序列(DWI)。通过RadCloud v2.2平台分别从高分辨率T2WI和DWI序列中提取1396个影像组学特征。采用LASSO算法从1396个T2WI特征、1396个DWI特征及2792个联合特征(T2WI序列和DWI序列)中筛选直肠腺瘤癌变相关特征。采用Logistic regression(LR)算法和五折交叉验证构建三个影像组学预测模型:模型1(T2WI)、模型2(DWI)、模型3(T2WI+DWI)。通过准确度、敏感度、特异度和曲线下面积(AUC)评估影像组学模型的预测性能。

结果

三个影像组学模型预测直肠腺瘤癌变的AUC分别为0.80、0.84、0.92,模型3的诊断效能最优。模型3的准确度、敏感度、特异度分别为0.85、0.81、0.88。

结论

基于多参数MRI的影像组学模型具有预测直肠腺瘤癌变的潜力,联合高分辨率T2WI及DWI序列比单一序列预测效能更佳。

Objective

To predictthe canceration of rectal adenoma based on multi-parameter MRI imaging omics model.

Methods

A total of 46 patients with rectal adenoma (n=25) and cancerous rectal adenoma (n=21) confirmed by pathology from November 2016 to December 2018 in Shandong Provincial Qianfoshan Hospital were retrospectively analyzed. All patients underwent pelvic MRI examination 2 weeks before surgery, including high-resolution T2WI and diffusion-weighted imaging (DWI). A total of 1396 image omics features were extracted from the high-resolutionT2WI and DWI sequences respectively by RadCloud v2.2 platform. The least absolute shrinkageand selection operator (LASSO) wasused toscreen cancer-related features ofrectal adenomafrom 1396 T2WI features, 1396 DWI features and 2792 combined features (T2WI sequence and DWI sequence). Logistic regression (LR) algorithm and5-fold cross-validation were used to construct three imaging omics predictionmodels: Model 1(T2WI), Model 2(DWI) and Model 3(T2WI+ DWI). The diagnostic performance of the imaging omics modelwas evaluated by accuracy, sensitivity, specificity and area under the curve (AUC).

Results

The AUC of Model 1, Model 2 and Model 3was0.80, 0.84, 0.92 respectively. Model 3 showed the best predictive performance. The accuracy, sensitivity and specificity of Model 3were0.85, 0.81, 0.88 respectively.

Conclusion

Maging omics model based on multi-parameterMRI hasthe potential to predict canceration of rectal adenoma, and combination of high resolutionT2WI and DWI sequence is more effective than single sequence in predicting canceration.

表1 扫描序列和参数
图1 57岁的直肠腺瘤癌变患者ROI选择示例
表2 直肠腺瘤和腺瘤癌变的患者的临床特征
图2 使用LASSO回归模型从1396 HR-T2WI(a),1396 DWI(b)和2792联合特征(c)中选择的特征
图3 使用LASSO回归模型从1396 HR-T2WI特征(a),1396 DWI特征(b)和2792联合特征(c)中筛选出5、7、11个最佳特征以及每个特征对应的回归系数
图4 使用LR算法建立的模型1(a),模型2(b),模型3(c)的ROC曲线
表3 不同预测模型的诊断性能
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