《计算机应用》唯一官方网站 ›› 2024, Vol. 44 ›› Issue (3): 890-900.DOI: 10.11772/j.issn.1001-9081.2023030305

• 多媒体计算与计算机仿真 • 上一篇    下一篇

CT图像环形伪影去除方法研究现状及展望

唐瑶瑶1,2, 朱叶晨2,3, 刘仰川2,3(), 高欣1,2,3   

  1. 1.山东中医药大学 智能与信息工程学院, 济南 250355
    2.济南国科医工科技发展有限公司, 济南 250101
    3.中国科学院苏州生物医学工程技术研究所 医学影像技术研究室, 江苏 苏州 215163
  • 收稿日期:2023-03-23 修回日期:2023-06-12 接受日期:2023-06-14 发布日期:2023-12-21 出版日期:2024-03-10
  • 通讯作者: 刘仰川
  • 作者简介:唐瑶瑶(1998—),女,江苏徐州人,硕士研究生,主要研究方向:医学图像处理与分析
    朱叶晨(1993—),男,江苏苏州人,助理研究员,硕士,主要研究方向:低剂量CT成像
    高欣(1975—),男,吉林吉林人,研究员,博士,主要研究方向:低剂量锥束CT、手术导航及机器人、基于智能计算的精准医疗。
  • 基金资助:
    国家重点研发计划项目(2022YFC2408400);国家自然科学基金资助项目(81871439);山东省重点研发计划项目(2021SFGC0104);江苏省重点研发计划项目(BE2021663);苏州科技计划项目(SJC20211014)

Research status and prospect of CT image ring artifact removal methods

Yaoyao TANG1,2, Yechen ZHU2,3, Yangchuan LIU2,3(), Xin GAO1,2,3   

  1. 1.School of Intelligence and Information Engineering,Shandong University of Traditional Chinese Medicine,Jinan Shandong 250355,China
    2.Jinan Guoke Medical Technology Development Company Limited,Jinan Shandong 250101,China
    3.Medical Imaging Department,Suzhou Institute of Biomedical Engineering and Technology,Chinese Academy of Sciences,Suzhou Jiangsu 215163,China
  • Received:2023-03-23 Revised:2023-06-12 Accepted:2023-06-14 Online:2023-12-21 Published:2024-03-10
  • Contact: Yangchuan LIU
  • About author:TANG Yaoyao, born in 1998, M. S. candidate. Her research interests include medical image processing and analysis.
    ZHU Yechen, born in 1993, M. S., assistant research fellow. His research interests include low-dose CT imaging.
    GAO Xin, born in 1975, Ph. D., research fellow. His research interests include low-dose cone beam CT, surgical navigation and robotics, precision medicine based on intelligent computing.
  • Supported by:
    National Key Research and Development Program(2022YFC2408400);National Natural Science Foundation of China(81871439);Key Research and Development Program of Shandong Province(2021SFGC0104);Key Research and Development Program of Jiangsu Province(BE2021663);Suzhou Science and Technology Project(SJC20211014)

摘要:

环形伪影是各类型计算机断层扫描(CT)图像中最常见的伪影之一,通常是由于探测器像素对X射线响应不一致导致的。有效去除环形伪影能极大提高CT图像质量,提升后期诊断和分析的精度,是CT图像重建中的必要步骤。因此,对环形伪影去除(又称“环形伪影校正”)方法进行了系统梳理。首先,介绍环形伪影的表现和成因,给出常用的数据集、算法库;其次,依次介绍基于探测器校正、基于解析和迭代求解(分为投影数据预处理、CT图像重建、CT图像后处理环节)、基于深度学习(分为卷积神经网络、生成对抗网络)的环形伪影去除方法,并分析每类方法的原理、发展过程及优缺点;最后,归纳现有环形伪影去除方法在鲁棒性、数据集多样化、模型构建等方面存在的技术瓶颈,并对解决方案进行展望。

关键词: 计算机断层扫描图像, 投影数据, 环形伪影去除, 环形伪影校正, 深度学习

Abstract:

Ring artifact is one of the most common artifacts in various types of CT (Computed Tomography) images, which is usually caused by the inconsistent response of detector pixels to X-rays. Effective removal of ring artifacts, which is a necessary step in CT image reconstruction, will greatly improve the quality of CT images and enhance the accuracy of later diagnosis and analysis. Therefore, the methods of ring artifact removal (also known as ring artifact correction) were systematically reviewed. Firstly, the performance and causes of ring artifacts were introduced, and commonly used datasets and algorithm libraries were given. Secondly, ring artifact removal methods were divided into three categories to introduce. The first category was based on detector calibration. The second category was based on analytical and iterative solution, including projection data preprocessing, CT image reconstruction and CT image post-processing. The last category was based on deep learning methods such as convolutional neural network and generative adversarial network. The principle, development process, advantages and limitations of each method were analyzed. Finally, the technical bottlenecks of existing ring artifact removal methods in terms of robustness, dataset diversity and model construction were summarized, and the solutions were prospected.

Key words: Computed Tomography (CT) image, projection data, ring artifact removal, ring artifact correction, deep learning

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