Repeatability of binarization thresholding methods for optical coherence tomography angiography image quantification.

ABSTRACT: Binarization is a critical step in analysis of retinal optical coherence tomography angiography (OCTA) images, but the repeatability of metrics produced from various binarization methods has not been fully assessed. This study set out to examine the repeatability of OCTA quantification metrics produced using different binarization thresholding methods, all of which have been applied in previous studies, across multiple devices and plexuses. Successive 3 × 3 mm foveal OCTA images of 13 healthy eyes were obtained on three different devices. For each image, contrast adjustments, 3 image processing techniques (linear registration, histogram normalization, and contrast-limited adaptive histogram equalization), and 11 binarization thresholding methods were independently applied. Vessel area dens

SUBMITTER: Mehta N 

PROVIDER: S-EPMC7505834 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature