1. Simulating vascular leakage on optical coherence tomography angiography using an overlay technique with corresponding thickness maps

    Simulating vascular leakage on optical coherence tomography angiography using an overlay technique with corresponding thickness maps

    Background To demonstrate a technique for using optical coherence tomography angiography (OCTA) to simulate leakage in eyes with diabetic macular oedema and determine the sensitivity and positive predictive value of detecting leaking microvasculature on OCTA using fluorescein angiography (FA) as the comparative norm. Methods 6×6 mm OCT angiograms were overlaid with the corresponding OCT thickness maps. Microvascular abnormalities on the OCT angiogram underlying areas of thickening on the OCT thickness map were assumed to be leaking. Two independent readers blindly read the OCTA overlay images then the FA images cropped to the same approximate region to delineate areas of ...

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