摘要光相干断层扫描血管成像(OCTA)是在光相干断层扫描基础上发展而来的眼病诊断新技术,也是目前眼科影像学检查中发展最快速的检查方法之一.OCTA的检测过程是基于眼部组织的解剖结构,自应用于临床以来已对多种眼底疾病的诊疗起到了重要作用.与经典的荧光素眼底血管造影和吲哚青绿血管造影相比,OCTA除了具备无创、快速、高分辨率的特点外,对血流显影的能力不受血管渗漏和视网膜出血的影响,能够提供三维测量的病变图像,并能实现病变的定量检测和分层检测,目前已用于多种眼科疾病的诊断和病情监测.OCTA技术的临床应用加深了眼科影像学对疾病的诊疗信息及发病机制的探索.但与此同时,OCTA存在着因扫描范围较小致其在周边视网膜血流观察的临床应用方面受到限制,投射伪影存在而对脉络膜新生血管等病灶的观察产生一定影响等局限和不足.相信随着OCTA技术的不断发展和进步,其有望取代相关的有创检查方法,成为眼科影像检查的新工具.

abstractsOptical coherence tomography angiography (OCTA) is a new diagnostic technique in recent years based on the optical coherence tomography.It is one of the fastest developing imaging examinations in ophthalmology.Compared with the classic diagnostic methods of fundus fluorescein angiography and indocyanine green angiography,OCTA show the ability to reveal blood flow non-invasively.With the development of modem medical detection technology,the requirement for ophthalmic diagnosis is raised,and many new measurement methods begin to apply in research and clinical,which makes the detection methods in the field of ophthalmology more accurate and comfortable.OCTA is a novel and noninvasive flow imaging technique,and it has the advantages of high resolution,fast scanning,as w ell as quantifying blood flow.Meanwhile,this technique can not only qualitatively analyze the shape of ocular blood vessels,but also be able to measure the ocular blood vessels and blood flow non-invasively,as well as to assess the depth of lesions.At present,with a wide clinical application in ophthalmology,OCTA still has its own superiority and weakness,but with the development of technology.It is believed that the OCTA will be expected to replace the relevant invasive examination methods and become a new tool for ophthalmic imaging.