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CHARACTERIZATION AND DIFFERENTIATION OF POLYPOIDAL CHOROIDAL VASCULOPATHY USING SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

CMG C, Yanagi Y, Mohla A, Lee SY, Mathur R, Chan CM, Yeo I, Wong TY

期刊名称:Retina

卷期:2017年第37卷第8期

关键词:
PCV SS-OCTA

摘要

PURPOSE:To determine the correlation and agreement between swept-source optical coherence tomography angiography (SS-OCT-A) with fluorescein angiography (FA), indocyanine green angiography (ICGA) and spectral domain OCT (SD-OCT) in characterizing polypoidal choroidal vasculopathy (PCV) and in differentiating eyes with typical age-related macular degeneration (t-AMD).METHODS:This study included 32 and 54 eyes with t-AMD and PCV, respectively, who underwent SS-OCT-A, SD-OCT, fluorescein angiography, and indocyanine green angiography. The images from these four techniques were compared.RESULTS:On SS-OCT-A, flow signals with vascular network configuration were detected in 81.2% and 77.8% of eyes with t-AMD and PCV, respectively. 40.4% of polyps were detected as flow signals with polypoidal configuration. Compared with indocyanine green angiography, SS-OCT-A had sensitivity and specificity of 83.0% and 57.1%, respectively, for vascular network, and 40.5% and 66.7% for polyps. Longitudinal changes were in agreement between SS-OCT-A and SD-OCT in 90% of eyes. 88.2% of eyes with dry retina on SD-OCT had persistent vascular net on SS-OCT-A. In two cases with reactivation of PCV, SS-OCT-A was more sensitive at detecting recurrence than SD-OCT.CONCLUSION:Swept-source optical coherence tomography angiography is effective at detecting vascular network that correlate to conventional angiography in eyes with t-AMD and PCV. Swept-source optical coherence tomography angiography is inferior to indocyanine green angiography in detecting polyps and cannot replace indocyanine green angiography for differentiating PCV from t-AMD; however, SS-OCT-A may be more sensitive than SD-OCT in detecting early recurrence.


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