计算机应用 ›› 2019, Vol. 39 ›› Issue (11): 3274-3279.DOI: 10.11772/j.issn.1001-9081.2019040717

• 人工智能 • 上一篇    下一篇

基于3D深度残差网络与级联U-Net的缺血性脑卒中病灶分割算法

王平1, 高琛1, 朱莉1, 赵俊1, 张晶1, 孔维铭2   

  1. 1. 南昌大学 信息工程学院, 南昌 330031;
    2. 中国人民解放军第九四医院, 南昌 330031
  • 收稿日期:2019-04-26 修回日期:2019-06-24 出版日期:2019-11-10 发布日期:2019-08-21
  • 通讯作者: 朱莉
  • 作者简介:王平(1958-),女,河南安阳人,教授,主要研究方向:图像处理、模式识别;高琛(1993-),女,江西上饶人,硕士研究生,主要研究方向:图像处理、机器学习;朱莉(1982-),女,江西南昌人,副教授,博士,主要研究方向:图像处理、机器学习;赵俊(1995-),女,河南周口人,硕士研究生,主要研究方向:图像处理、机器学习;张晶(1994-),女,河北邯郸人,硕士研究生,主要研究方向:图像处理、机器学习;孔维铭(1984-),男,山东曹县人,硕士研究生,主要研究方向:医学影像分析。
  • 基金资助:
    国家自然科学基金资助项目(61463035);中国博士后基金资助项目(2016M592117);江西省杰出青年基金资助项目(2018ACB21038);江西省科技厅科技支撑计划项目(20151BBG70057);江西省教育厅科技项目(GJJ14137)。

Segmentation algorithm of ischemic stroke lesion based on 3D deep residual network and cascade U-Net

WANG Ping1, GAO Chen1, ZHU Li1, ZHAO Jun1, ZHANG Jing1, KONG Weiming2   

  1. 1. College of Information Engineering, Nanchang University, Nanchang Jiangxi 330031, China;
    2. The 94 th Hospital of the Chinese People's Liberation Army, Nanchang Jiangxi 330031, China
  • Received:2019-04-26 Revised:2019-06-24 Online:2019-11-10 Published:2019-08-21
  • Supported by:
    This work is partially supported by the National Natural Science Foundation of China (61463035), the China Postdoctoral Science Foundation (2016M592117), the Outstanding Youth Fund Project in Jiangxi Province (2018ACB21038), the Science and Technology Support Project of Jiangxi Science and Technology Department (20151BBG70057), the Science and Technology Project of Jiangxi Education Department (GJJ14137).

摘要: 为了解决人工勾画缺血性脑卒中病灶费时费力且易引入主观差异的问题,提出了一种基于三维(3D)深度残差网络与级联U-Net的自动分割算法。首先,为了有效利用图像的3D上下文信息并改善类不平衡现象,将脑卒中核磁共振图像(MRI)采样成图像块作为网络输入;然后,利用基于3D深度残差网络与级联U-Net的分割模型对图像块进行特征提取,获得粗分割结果;最后,对粗分割结果进行精分割处理。在ISLES数据集上的实验结果表明,该算法的Dice系数可达到0.81,精确度可达到0.81,灵敏度可达到0.81,平均对称表面距离(ASSD)距离系数为1.32,HD为22.67。所提算法与3D U-Net算法、基于水平集算法、基于模糊C均值(FCM)算法和基于卷积神经网络(CNN)算法相比分割性能更好。

关键词: 急性缺血性脑卒中, 自动分割, 三维, 磁共振图像

Abstract: Artificial identification of ischemic stroke lesion is time-consuming, laborious and easy be added subjective differences. To solve this problem, an automatic segmentation algorithm based on 3D deep residual network and cascade U-Net was proposed. Firstly, in order to efficiently utilize 3D contextual information of the image and the solve class imbalance issue, the patches were extracted from the stroke Magnetic Resonance Image (MRI) and put into network. Then, a segmentation model based on 3D deep residual network and cascade U-Net was used to extract features of the image patches, and the coarse segmentation result was obtained. Finally, the fine segmentation process was used to optimize the coarse segmentation result. The experiment results show that, on the dataset of Ischemic Stroke LEsion Segmentation (ISLES), for the proposed algorithm, the Dice similarity coefficient reached 0.81, the recall reached 0.81 and the precision reached 0.81, the distance coefficient Average Symmetric Surface Distance (ASSD) reached 1.32 and Hausdorff Distance (HD) reached 22.67. Compared with 3D U-Net algorithm, level set algorithm, Fuzzy C-Means (FCM) algorithm and Convolutional Neural Network (CNN) algorithm, the proposed algorithm has better segmentation performance.

Key words: acute ischemic stroke, automatic segmentation, three-dimensional, Magnetic Resonance Image (MRI)

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