光学相干层析血管造影术及其在眼科学中的应用

Optical Coherence Tomography Angiography and Its Applications in Ophthalmology

光学相干层析血管造影(OCTA)是一种无需注射染料和无创的新兴影像学检查方法,它能以极高的分辨率和灵敏度来显示眼底血管网络,其高达微米级的纵向分辨能力能够定位病变在视网膜和脉络膜中的原发位置。OCTA可以提供与当前金标准相当甚至更好的血管观察效果,尤其是在没有副作用的情况下重复检查。因此,自从OCTA技术问世后,就获得了快速发展,商用化产品已经在临床实践中获得了应用。为了帮助相关人员快速了解这一技术,本文对OCTA技术的原理方法、在眼科学中的应用、产品和临床使用现状、存在不足与展望等进行了介绍。

Optical coherence tomography angiography(OCTA)is a new noninvasive imaging method,which does not require dye injection and can thus be repeatedly used.It can present the fundus vascular network system including capillaries with high resolution and sensitivity.Its axial resolution up to micron level enables us to locate the primary location of lesions in the retina and choroid.OCTA can provide the same or even better vascular observation effect as the current gold standards.Therefore it has been developed rapidly,and its commercial products and applications in clinical practice have appeared.In order to help the relevant personnel quickly understand this technology,this paper introduces its principle and methods,applications in ophthalmology,current situations of products and clinical applications,existing shortcomings and prospects.