前段光学相干断层扫描(AS-OCT)构成了检查前眼的重要成像方式,通常用于研究和临床实践。自推出以来,已经开发了一系列图像分析方法,以使用针对各种应用的不同分析技术来量化这些图像。本系统综述旨在提供深入的总结,并对应用于AS-OCT图像的文献中的图像分析技术进行分类。
搜索了Scopus和EngineeringVillage数据库,以检索到2022年1月之前的相关研究。使用自定义搜索语句以及交叉引用和手动搜索技术,以确保完整的覆盖范围。提取了绩效指标,分析,并进行比较(在可能的情况下)。
确定了三个主要应用类别:青光眼评估,角膜分割,和眼前节生物测量。这三个类别占本综述报告的总研究的66%。研究还按出版年份进行了分析,自2019年以来,深度学习方法比传统编程或机器学习方法更受青睐。总的来说,与后段OCT成像相比,AS-OCT图像分析领域发展较少。
这篇综述介绍了AS-OCT图像分析领域的最新技术。它强调了未来研究领域的机会,例如DL方法的扩展和扩展到受到有限关注的特定临床领域,包括手术监测,隐形眼镜,和特定的临床状况,如圆锥角膜和角膜病变。
Anterior segment optical coherence tomography (AS-OCT) constitutes an important imaging modality to examine the anterior eye, which is commonly used in research and clinical practice. Since its introduction, a range of image analysis methods have been developed to quantify these images using different analysis techniques for various applications. This systematic
review aims to provide an in-depth summary and to classify image analysis techniques found in the literature applied to AS-OCT images.
Scopus and Engineering Village databases were searched to retrieve relevant studies up to and including January 2022. Customized search statements were used along with cross reference and hand search techniques to ensure a complete coverage. Performance metrics were extracted, analyzed, and compared (when possible).
Three main application categories were identified: glaucoma assessment, corneal segmentation, and anterior segment biometry. These three categories constitute 66% of the total studies reported in this
review. Studies were also analyzed by year of publication, and since 2019 deep learning methods were favored over traditional programming or machine learning methodologies. Overall, the AS-OCT image analysis field is less developed compared to posterior segment OCT imaging.
This
review presents the state of the art in the field of AS-OCT image analysis. It highlights the opportunities for future areas of research, such as the expansion of DL methods and the extension to specific clinical areas that have received limited attention including surgical monitoring, contact lenses, and specific clinical conditions such as keratoconus and corneal lesions.