《计算机应用》唯一官方网站 ›› 2025, Vol. 45 ›› Issue (6): 2007-2015.DOI: 10.11772/j.issn.1001-9081.2024060853

• 多媒体计算与计算机仿真 • 上一篇    

基于多尺度空间特征的冠状动脉CT血管造影图像分割网络

陈盈涛1, 方康康1, 张金敖1, 梁浩然1, 郭焕斌2, 邱兆文1()   

  1. 1.东北林业大学 计算机与控制工程学院,哈尔滨 150040
    2.中国共产党高平市委员会 社会工作部,山西 高平 048400
  • 收稿日期:2024-06-24 修回日期:2024-09-27 接受日期:2024-10-09 发布日期:2024-10-29 出版日期:2025-06-10
  • 通讯作者: 邱兆文
  • 作者简介:陈盈涛(1999—),男,浙江临海人,硕士研究生,主要研究方向:医学影像分析
    方康康(2000—),男,河南信阳人,硕士研究生,主要研究方向:医学影像分析
    张金敖(1998—),男,山东寿光人,硕士研究生,主要研究方向:医学影像分析
    梁浩然(1999—),山东菏泽人,硕士研究生,主要研究方向:医学影像分析
    郭焕斌(1976—),山西高平人,高级工程师,主要研究方向:信息系统项目管理
    邱兆文(1974—),男,黑龙江哈尔滨人,教授,博士,CCF杰出会员,主要研究方向:医学人工智能、虚拟现实。qiuzw@nefu.edu.cn
  • 基金资助:
    黑龙江省重点研发计划项目(2023ZX02C10)

Segmentation network of coronary artery structure from CT angiography images based on multi-scale spatial features

Yingtao CHEN1, Kangkang FANG1, Jin’ao ZHANG1, Haoran LIANG1, Huanbin GUO2, Zhaowen QIU1()   

  1. 1.College of Computer and Control Engineering,Northeast Forestry University,Harbin Heilongjiang 150040,China
    2.Social Work Department,Communist Party of China Gaoping Municipal Committee,Gaoping Shanxi 048400,China
  • Received:2024-06-24 Revised:2024-09-27 Accepted:2024-10-09 Online:2024-10-29 Published:2025-06-10
  • Contact: Zhaowen QIU
  • About author:CHEN Yingtao, born in 1999, M. S. candidate. His research interests include medical image analysis.
    FANG Kangkang, born in 2000, M. S. candidate. His research interests include medical image analysis.
    ZHANG Jin’ao, born in 1998, M. S. candidate. His research interests include medical image analysis.
    LIANG Haoran, born in 1999, M. S. candidate. His research interests include medical image analysis.
    GUO Huanbin, born in 1976, senior engineer. His research interests include information system project management.
    QIU Zhaowen, born in 1974, Ph. D., professor. His research interests include medical artificial intelligence, virtual reality.
  • Supported by:
    Heilongjiang Provincial Key Research and Development Plan(2023ZX02C10)

摘要:

冠状动脉血管形态结构的复杂性以及计算机断层扫描(CT)血管造影(CTA)图像的采集条件差异会导致图像灰度分布不均匀、运动伪影和噪声等图像质量问题,进而产生冠状动脉结构分割时的漏判和误判问题。因此,提出一种基于多尺度空间特征的冠状动脉CTA图像分割网络——三维多尺度并行网络(MSP-Net)。首先,针对冠状动脉的空间跨度大和局部占比小的特点,采用多尺度网络分别提取冠状动脉CTA图像的全局特征和局部特征并融合它们,保证冠状动脉结构特征的完整提取;其次,冠状动脉重建采用由粗到细的思想,增强图像特征的冗余性,确保冠状动脉的边界分明,再利用不同尺度特征度融合方法重建冠状动脉结构,以提高分割结果的准确率,减少漏判和误判;最后,为了加快网络的训练,采用深监督策略,在不同网络层级上引入监督信号,从而提高训练效率。实验结果表明,所提网络在冠状动脉自动分割任务中的平均Dice相似系数(DSC)达到87.16%,比nnU-Net和Swin UNETR (Swin UNEt TRansformers)分别提高了4.04和2.31个百分点,而平均95%豪斯多夫距离(HD95)达到3.69 mm,比nnU-Net和Swin UNETR分别降低了14.43 mm和13.75 mm。可见,所提网络能有效提高冠状动脉结构的分割精度,有助于临床医生更准确地了解患者冠状动脉结构,从而更有效地评估病情。

关键词: 冠状动脉分割, 计算机断层扫描血管造影, 计算机辅助诊断, 多尺度融合, 语义分割

Abstract:

Owning to the complex morphological structure of coronary artery and the variations in acquisition conditions of Computed Tomography (CT) Angiography (CTA) images, image quality issues such as uneven distribution of image gray scale, motion artifacts and noise, result in missed judgements and misjudgement problems in segmentation of coronary artery structure. Therefore, a segmentation network of coronary artery structure from CTA images based on multi-scale spatial features — Three-Dimensional (3D) Multi-Scale Parallel Net (MSP-Net) was proposed. Firstly, in view of characteristics of large spatial span and small local proportion of coronary artery, a multi-scale parallel fusion network was used to extract global features and local features from coronary artery CTA images respectively for fusion to ensure the complete extraction of coronary artery structure features. Secondly, by adopting a coarse to fine idea in coronary artery reconstruction to enhance redundancy of the image features, thereby ensuring clear boundaries of coronary artery, and then the coronary artery structure was reconstructed using the fusion method of different scale features to enhance accuracy of the segmentation results, thereby reducing missed judgements and misjudgments. Finally, in order to accelerate training process of the network, supervision signals were adopted at different network depths by adopting deep supervision strategy to improve training efficiency. Experimental results show that in coronary artery automatic segmentation task, the average Dice Similarity Coefficient (DSC) of the proposed network reaches 87.16%, which is 4.04 and 2.31 percentage points higher than those of nnU-Net and Swin UNETR (Swin UNEt TRansformers), and the average 95% Hausdorff Distance (HD95) of the proposed network reaches 3.69 mm, which is 14.43 mm and 13.75 mm lower than those of nnU-Net and Swin UNETR. It can be seen that the proposed network can improve segmentation accuracy of coronary artery structure effectively, and help clinicians to understand the coronary artery structure of patients more accurately, so as to evaluate the disease more effectively.

Key words: coronary artery segmentation, Computed Tomography Angiography (CTA), computer-aided diagnosis, multi-scale fusion, semantic segmentation

中图分类号: