Open AccessTesting a phantom eye under various signal-to-noise ratio conditions using eleven different OCT devices
Author(s) -
Tuomas Heikka,
Giovanni Ometto,
Giovanni Montesano,
Scott C. Rowe,
Nomdo M. Jansonius,
David P. Crabb
Publication year - 2020
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.383103
Subject(s) - imaging phantom , optics , materials science , signal (programming language) , scale (ratio) , signal to noise ratio (imaging) , layer (electronics) , metric (unit) , biomedical engineering , computer science , physics , medicine , composite material , operations management , quantum mechanics , economics , programming language
We compared eleven OCT devices in their ability to quantify retinal layer thicknesses under different signal-strength conditions, using a commercially available phantom eye. We analyzed a medium-intensity 50 µm layer in an identical manner for all devices, using the provided log-scale images and a reconstructed linear-scale tissue reflectivity metric. Thickness measurements were highly comparable when the data were analyzed in an identical manner. With optimal signal strength, the thickness of the 50 µm layer was overestimated by a mean of 4.3 µm in the log-scale images and of 2.7 µm in the linear-scale images.