Document Type

Article

Journal Title

Journal of biomedical optics

Publication Date

Winter 2-1-2014

Volume

19

Abstract

Optical coherence tomography (OCT) is a rapidly growing imaging modality, particularly in the field of ophthalmology. Accurate early diagnosis of diseases requires consistent and validated imaging performance. In contrast to more well-established medical imaging modalities, no standardized test methods currently exist for OCT quality assurance. We developed a retinal phantom which mimics the thickness and near-infrared optical properties of each anatomical retinal layer as well as the surface topography of the foveal pit. The fabrication process involves layer-by-layer spin coating of nanoparticle-embedded silicone films followed by laser micro-etching to modify the surface topography. The thickness of each layer and dimensions of the foveal pit are measured with high precision. The phantom is embedded into a commercially available, water-filled model eye to simulate ocular dispersion and emmetropic refraction, and for ease of use with clinical OCT systems. The phantom was imaged with research and clinical OCT systems to assess image quality and software accuracy. Our results indicate that this phantom may serve as a useful tool to evaluate and standardize OCT performance.

MeSH Headings

Dimethylpolysiloxanes, Humans, Image Processing, Computer-Assisted, Optics and Photonics, Phantoms, Imaging, Quality Control, Reproducibility of Results, Retina, Software, Tomography, Optical Coherence

ISSN

1560-2281

Creative Commons License


This work is licensed under a Creative Commons Attribution 3.0 License.

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Ophthalmology Commons

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