Impact of image quality on OCT angiography based quantitative measurements

International Journal of Retina and Vitreous
Mayss Al-SheikhSriniVas R Sadda

Abstract

To study the impact of image quality on quantitative measurements and the frequency of segmentation error with optical coherence tomography angiography (OCTA). Seventeen eyes of 10 healthy individuals were included in this study. OCTA was performed using a swept-source device (Triton, Topcon). Each subject underwent three scanning sessions 1-2 min apart; the first two scans were obtained under standard conditions and for the third session, the image quality index was reduced using application of a topical ointment. En face OCTA images of the retinal vasculature were generated using the default segmentation for the superficial and deep retinal layer (SRL, DRL). Intraclass correlation coefficient (ICC) was used as a measure for repeatability. The frequency of segmentation error, motion artifact, banding artifact and projection artifact was also compared among the three sessions. The frequency of segmentation error, and motion artifact was statistically similar between high and low image quality sessions (P = 0.707, and P = 1 respectively). However, the frequency of projection and banding artifact was higher with a lower image quality. The vessel density in the SRL was highly repeatable in the high image quality sessions (ICC = 0....Continue Reading

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Citations

Aug 17, 2018·Ophthalmic Surgery, Lasers & Imaging Retina·Kim Vieira KayatMichel Eid Farah
Feb 24, 2018·Retina·Enrico BorrelliIrena Tsui
Nov 11, 2019·Clinical & Experimental Ophthalmology·Noha AliFred K Chen
May 18, 2019·The British Journal of Ophthalmology·Ji-Ah KimJean Martial Mari
Apr 16, 2019·Retina·Enrico BorrelliRodolfo Mastropasqua
Dec 18, 2019·Journal of Current Ophthalmology·Mojtaba AbrishamiSamira Hassanzadeh
Jul 19, 2019·Journal of Current Ophthalmology·Anne K WoetzelFlorian Alten
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Aug 22, 2020·Translational Vision Science & Technology·Cecilia CzakóIllés Kovács
Nov 12, 2019·International Journal of Retina and Vitreous·Cecília CzakóIllés Kovács
Aug 14, 2019·Translational Vision Science & Technology·Matt TrinhLisa Nivison-Smith
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Jun 12, 2019·Investigative Ophthalmology & Visual Science·Gregor Sebastian ReiterStefan Sacu
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Mar 7, 2021·Journal of Clinical Medicine·Jackson ScharfDavid Sarraf
Apr 4, 2021·Journal of Clinical Medicine·Maximilian Robert Justus WiestSandrine Anne Zweifel

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Methods Mentioned

BETA
imaging technique

Software Mentioned

IMAGEnet
OCTA
OCT
SPSS
ImageJ

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