Optical coherence tomography angiography in chorioretinal disorders

被引:11
|
作者
De Oliveira, Paulo Ricardo Chaves [1 ]
Berger, Alan Richard [1 ,2 ]
Chow, David Robert [1 ,2 ]
机构
[1] Toronto Retina Inst, Toronto, ON, Canada
[2] Univ Toronto, St Michaels Hosp, Dept Ophthalmol & Visual Sci, Toronto, ON, Canada
关键词
CENTRAL SEROUS CHORIORETINOPATHY; FOVEAL AVASCULAR ZONE; RETINAL VASCULAR LAYERS; CHOROIDAL NEOVASCULARIZATION; DIABETIC-RETINOPATHY; FLUORESCEIN ANGIOGRAPHY; MACULAR DEGENERATION; OCT ANGIOGRAPHY; VEIN OCCLUSION; CAPILLARY;
D O I
10.1016/j.jcjo.2016.07.015
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Optical coherence tomography angiography (OCTA) is a novel imaging modality that incorporates blood motion contrast to create angiograms of the retinal vasculature in a noninvasive manner, without the use of dye. It is a safe procedure and can be repeated as frequently as desired. The use of OCTA for delineation of choroidal neovascular membranes, for the study of microvascular abnormalities in diabetic patients, to assess nonperfused areas in retinal occlusions and vascular changes in macular telangiectasia are some of the potential OCTA applications. However, it is not free of drawbacks. Major limitations include the small field of view and its great sensitivity to movement. As a result, it is prone to motion artifacts, leading to poor-quality images. The scope of the body literature regarding this new modality rapidly increases as we learn how to better use this technology. Our objective is to point overall aspects of OCTA, including its limitations and review some of its initial reports on chorioretinal diseases. L'angiotomographie par coherence optique (ATCO) est une nouvelle technique d'imagerie qui utilise le contraste du mouvement sanguin pour creer des angiogrammes du systeme vasculaire retinien de maniere noninvasive, sans injection de produit colorant. C'est une intervention sure qui peut etre repetee aussi souvent que desire. La delimitation des membrances neovasculaires choroidiennes, l'etude des anomalies microvasculaires chez les patients diabetiques afin d'evaluer les zones de non-perfusion dans les cas d'occlusion retinienne et les changements vasculaires dans les cas de telangiectasie maculaire sont quelques-unes des applications potentielles de l'ACTO. Cependant, cette technique n'est pas sans inconvenients. Les principales limites incluent le petit champ de vision et sa grande sensibilitau mouvement. Par consequent, l'ACTO est sujette a des artefacts de mouvement se traduisant par des images de mauvaise qualite. La portee du corpus de litterature en ce qui concerne cette nouvelle modalite augmente rapidement a mesure que nous apprenons a mieux utiliser cette technologie. Notre objectif est de souligner les aspects generaux de l'ACTO, y compris ses limites, et de revoir certains de ses rapports initiaux sur les maladies chorioretiniennes.
引用
收藏
页码:125 / 136
页数:12
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