Skip to main content
Top
Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 3/2020

01-03-2020 | Macular Degeneration | Retinal Disorders

Linear and planar reflection artifacts on swept-source and spectral-domain optical coherence tomography due to hyperreflective crystalline deposits

Authors: Serena Fragiotta, Pedro Fernández-Avellaneda, Mark P. Breazzano, Lawrence A. Yannuzzi, Christine A. Curcio, K. Bailey Freund

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 3/2020

Login to get access

Abstract

Purpose

To describe novel spectral-domain (SD) and swept-source (SS) optical coherence tomography (OCT) linear and planar reflection artifacts produced by hyperreflective crystalline deposits (HCD).

Methods

Imaging from 10 eyes with HCD producing linear and planar artifacts on OCT was retrospectively analyzed. All eyes had SD-OCT (Spectralis HRA + OCT, Heidelberg Engineering, Germany) and SS-OCT angiography (PLEX Elite 9000, Carl Zeiss Meditec, Inc., Dublin, CA) acquired on the same day. The horizontal extent of planar artifacts and the corresponding HCD on B-scans was measured using a digital caliper. Artifact features from HCD in eyes with non-neovascular age-related macular degeneration (AMD) were analyzed and compared to those seen in two eyes with the “onion sign,” an OCT signature previously shown to represent cholesterol crystals (CC) in the sub-retinal pigment epithelium-basal laminar space of eyes with neovascular AMD. A third eye with the “onion sign” was imaged with dense B-scan (DB)-OCTA.

Results

Ten eyes of ten patients (77.4 ± 8.7 years) with HCD were analyzed. On SS-OCTA, HCD produced linear artifacts of high signal intensity passing through the HCD and spanning the entire scan depth. On SD-OCT, HCD produced planar artifacts located anterior to both the retina and a hyporeflective space representing normal vitreous signal. The horizontal extent of the artifact did not differ significantly from the corresponding HCD on OCT B-scans (P = 0.62). The OCT artifacts produced by the “onion sign” appeared similar to those of HCD. The additional eye with neovascular AMD imaged with DB-OCTA was characterized by a single, vertical, linear false-flow signal crossing retinal layers.

Conclusions

To the authors’ knowledge, this is the first description of SD- and SS-OCT/OCTA artifacts corresponding to both HCD and the “onion sign.” These artifacts are likely due to highly reflective CC previously shown on histology to correspond to both of these OCT signatures.
Appendix
Available only for authorised users
Literature
1.
go back to reference Fragiotta S, Fernandez-Avellaneda P, Breazzano MP, Curcio CA, Leong BCS, Kato K, Yannuzzi LA, Freund KB (2019) The fate and prognostic implications of Hyperreflective crystalline deposits in Nonneovascular age-related macular degeneration. Invest Ophthalmol Vis Sci 60:3100–3109. https://doi.org/10.1167/iovs.19-26589 CrossRefPubMed Fragiotta S, Fernandez-Avellaneda P, Breazzano MP, Curcio CA, Leong BCS, Kato K, Yannuzzi LA, Freund KB (2019) The fate and prognostic implications of Hyperreflective crystalline deposits in Nonneovascular age-related macular degeneration. Invest Ophthalmol Vis Sci 60:3100–3109. https://​doi.​org/​10.​1167/​iovs.​19-26589 CrossRefPubMed
4.
go back to reference Margo CE, Pusateri TJ, Ulshafer RJ, Keller RK (1990) Lipid crystals in malignant melanoma of the choroid. Retina 10:68–71CrossRefPubMed Margo CE, Pusateri TJ, Ulshafer RJ, Keller RK (1990) Lipid crystals in malignant melanoma of the choroid. Retina 10:68–71CrossRefPubMed
17.
go back to reference Zheng K, Liu B, Huang C, Brezinski ME (2008) Experimental confirmation of potential swept source optical coherence tomography performance limitations. Appl Opt 47:6151–6158CrossRefPubMedPubMedCentral Zheng K, Liu B, Huang C, Brezinski ME (2008) Experimental confirmation of potential swept source optical coherence tomography performance limitations. Appl Opt 47:6151–6158CrossRefPubMedPubMedCentral
18.
go back to reference Cover KL, Slasky BS, Skolnick ML (1985) Sonography of cholesterol in the biliary system. J Ultrasound Med 4:647–653CrossRefPubMed Cover KL, Slasky BS, Skolnick ML (1985) Sonography of cholesterol in the biliary system. J Ultrasound Med 4:647–653CrossRefPubMed
24.
29.
30.
32.
go back to reference Curcio CA, Millican CL, Bailey T, Kruth HS (2001) Accumulation of cholesterol with age in human Bruch's membrane. Invest Ophthalmol Vis Sci 42:265–274PubMed Curcio CA, Millican CL, Bailey T, Kruth HS (2001) Accumulation of cholesterol with age in human Bruch's membrane. Invest Ophthalmol Vis Sci 42:265–274PubMed
38.
go back to reference Phelps P, Steele AD, McCarty DJ Jr (1968) Compensated polarized light microscopy. Identification of crystals in synovial fluids from gout and pseudogout. JAMA 203:508–512CrossRefPubMed Phelps P, Steele AD, McCarty DJ Jr (1968) Compensated polarized light microscopy. Identification of crystals in synovial fluids from gout and pseudogout. JAMA 203:508–512CrossRefPubMed
40.
go back to reference Glancy JJ, Goddard J, Pearson DE (1980) In vitro demonstration of cholesterol crystals' high echogenicity relative to protein particles. J Clin Ultrasound 8:27–29CrossRefPubMed Glancy JJ, Goddard J, Pearson DE (1980) In vitro demonstration of cholesterol crystals' high echogenicity relative to protein particles. J Clin Ultrasound 8:27–29CrossRefPubMed
51.
go back to reference Abela GS, Aziz K (2006) Cholesterol crystals rupture biological membranes and human plaques during acute cardiovascular events--a novel insight into plaque rupture by scanning electron microscopy. Scanning 28:1–10CrossRefPubMed Abela GS, Aziz K (2006) Cholesterol crystals rupture biological membranes and human plaques during acute cardiovascular events--a novel insight into plaque rupture by scanning electron microscopy. Scanning 28:1–10CrossRefPubMed
Metadata
Title
Linear and planar reflection artifacts on swept-source and spectral-domain optical coherence tomography due to hyperreflective crystalline deposits
Authors
Serena Fragiotta
Pedro Fernández-Avellaneda
Mark P. Breazzano
Lawrence A. Yannuzzi
Christine A. Curcio
K. Bailey Freund
Publication date
01-03-2020
Publisher
Springer Berlin Heidelberg
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 3/2020
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-019-04565-y

Other articles of this Issue 3/2020

Graefe's Archive for Clinical and Experimental Ophthalmology 3/2020 Go to the issue