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  • Title: DIAGNOSTIC CHARACTERISTICS OF POLYPOIDAL CHOROIDAL VASCULOPATHY BASED ON B-SCAN SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY AND ITS INTERRATER AGREEMENT COMPARED WITH INDOCYANINE GREEN ANGIOGRAPHY.
    Author: Fujita A, Kataoka K, Takeuchi J, Nakano Y, Horiguchi E, Kaneko H, Ito Y, Terasaki H.
    Journal: Retina; 2020 Dec; 40(12):2296-2303. PubMed ID: 31971919.
    Abstract:
    PURPOSE: To examine the characteristics of polypoidal choroidal vasculopathy using B-scan optical coherence tomography angiography (OCTA), and determine the diagnostic criteria of polypoidal choroidal vasculopathy based on OCTA. METHODS: This retrospective case series included patients diagnosed with treatment-naïve polypoidal choroidal vasculopathy who underwent indocyanine green angiography (ICGA) and swept-source OCTA at baseline. We compared the characteristics of the polyps detected using B-scan OCTA and ICGA. Then, the diagnostic concordance of each polypoidal lesion between ICGA and OCTA was evaluated. RESULTS: Among 54 eyes of 52 patients, all 54 eyes showed flow signals indicating polyps on both ICGA and B-scan OCTA. All polyps on B-scan OCTA were detected as round/ring-like flow signals inside pigment epithelial detachments, incomplete round/ring-like flow signals overlaid with round/ring-like OCT structures inside pigment epithelial detachments, or flow signals adjacent to a pigment epithelial detachment notch. Using B-scan OCTA, 94.7% of the polypoidal lesions were detected by an independent evaluator with an overall accuracy of 92.6% for counting the polypoidal lesions per eye relative to ICGA and a Kappa value of 0.82. CONCLUSION: Polyp detection on B-scan OCTA demonstrates high accuracy and is comparable to that obtained on ICGA. B-scan OCTA could replace ICGA for the diagnosis of polypoidal choroidal vasculopathy.
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