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SPECTRAL DOMAIN-OPTICAL COHERENCE TOMOGRAPHY IMAGE CONTRAST AND BACKGROUND COLOR SETTINGS INFLUENCE IDENTIFICATION OF RETINAL STRUCTURES.
- Source :
-
Retina (Philadelphia, Pa.) [Retina] 2016 Oct; Vol. 36 (10), pp. 1888-96. - Publication Year :
- 2016
-
Abstract
- Purpose: To evaluate image contrast and color setting on assessment of retinal structures and morphology in spectral-domain optical coherence tomography.<br />Methods: Two hundred and forty-eight Spectralis spectral-domain optical coherence tomography B-scans of 62 patients were analyzed by 4 readers. B-scans were extracted in 4 settings: W + N = white background with black image at normal contrast 9; W + H = white background with black image at maximum contrast 16; B + N = black background with white image at normal contrast 12; B + H = black background with white image at maximum contrast 16. Readers analyzed the images to identify morphologic features. Interreader correlation was calculated. Differences between Fleiss-kappa correlation coefficients were examined using bootstrap method. Any setting with significantly higher correlation coefficient was deemed superior for evaluating specific features.<br />Results: Correlation coefficients differed among settings. No single setting was superior for all respective spectral-domain optical coherence tomography parameters (P = 0.3773). Some variables showed no differences among settings. Hard exudates and subretinal fluid were best seen with B + H (κ = 0.46, P = 0.0237 and κ = 0.78, P = 0.002). Microaneurysms were best seen with W + N (κ = 0.56, P = 0.025). Vitreomacular interface, enhanced transmission signal, and epiretinal membrane were best identified using all color/contrast settings together (κ = 0.44, P = 0.042, κ = 0.57, P = 0.01, and κ = 0.62, P ≤ 0.0001).<br />Conclusion: Contrast and background affect the evaluation of retinal structures on spectral-domain optical coherence tomography images. No single setting was superior for all features, though certain changes were best seen with specific settings.
Details
- Language :
- English
- ISSN :
- 1539-2864
- Volume :
- 36
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Retina (Philadelphia, Pa.)
- Publication Type :
- Academic Journal
- Accession number :
- 27219667
- Full Text :
- https://doi.org/10.1097/IAE.0000000000001060