1. Signal quality assessment of retinal optical coherence tomography (OCT) images

    Signal quality assessment of retinal optical coherence tomography (OCT) images

    Purpose: To assess signal quality of retinal OCT images from multiple devices using subjective and quantitative measurements. Methods: 120 multi-frame OCT images from 4 SD OCT devices (Cirrus, RTVue, Spectralis, and 3D OCT-1000) were evaluated subjectively by trained graders, and measured quantitatively using a derived parameter, maximum tissue contrast index (mTCI). An intensity histogram decomposition model was proposed to separate the foreground and background information of OCT images and to calculate the mTCI. The mTCI results were compared to the manufacturer signal index (MSI) provided by the respective devices, and to the subjective grading scores (SGS). Results: Statistically significant correlations ...

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