Eyelashes Artifact in Ultra-Widefield Optical Coherence Tomography Angiography
Copyright 2019, SLACK Incorporated.
| Veröffentlicht in: | Ophthalmic surgery, lasers & imaging retina. - 2013. - 50(2019), 11 vom: 01. Nov., Seite 740-743 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2019
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| Zugriff auf das übergeordnete Werk: | Ophthalmic surgery, lasers & imaging retina |
| Schlagworte: | Journal Article |
| Zusammenfassung: | Copyright 2019, SLACK Incorporated. BACKGROUND AND OBJECTIVE: To describe the presence of eyelashes artifact in ultra-widefield swept-source optical coherence tomography angiography (SS-OCTA) images PATIENTS AND METHODS: In this prospective, cross-sectional study, 52 healthy, young subjects were imaged with the SS-OCTA system. OCTA scans were taken in primary and extremes of gaze, and a montage was automatically created. The en face choriocapillaris images were then exported, and a semi-automated algorithm was used for subsequent quantitative analysis RESULTS: The authors noted the presence of some linear regions of reduced brightness, which were assumed to represent a shadow effect due to patient eyelashes. In order to quantify this effect, the authors performed a quantitative analysis of the superior and inferior regions in the retinal and choroidal vessels CONCLUSIONS: The authors' qualitative and quantitative analysis showed the presence of regions of false-positive hypoperfusion secondary to eyelashes artifacts. To the authors' knowledge, this represents the first description of this new type of shadowing artifact affecting OCTA images. [Ophthalmic Surg Lasers Imaging Retina. 2019;50:740-743.] |
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| Beschreibung: | Date Completed 10.02.2020 Date Revised 10.02.2020 published: Print Citation Status MEDLINE |
| ISSN: | 2325-8179 |
| DOI: | 10.3928/23258160-20191031-11 |