OCT-Angiography Face Mask–Associated Artifacts During the COVID-19 Pandemic. Issue 6 (23rd June 2022)
- Record Type:
- Journal Article
- Title:
- OCT-Angiography Face Mask–Associated Artifacts During the COVID-19 Pandemic. Issue 6 (23rd June 2022)
- Main Title:
- OCT-Angiography Face Mask–Associated Artifacts During the COVID-19 Pandemic
- Authors:
- El-Nimri, Nevin W.
Micheletti, Eleonora
Mohammadzadeh, Vahid
Nishida, Takashi
Kamalipour, Alireza
Zangwill, Linda M.
Bowd, Christopher
Moghimi, Sasan
Weinreb, Robert N. - Abstract:
- Abstract : Précis: Face mask wearing has no significant effects on artifacts or vessel density measurements in optic nerve head (ONH) and macular optical coherence tomography-angiography (OCT-A) scans. Purpose: The aim was to assess the difference in area of artifacts observed in optical OCT-A scans with and without face mask wear and to verify if mask wear interferes with OCT-A vessel density measurements. Subjects and Controls: A total of 64 eyes of 10 healthy subjects, 4 ocular hypertensive, 8 glaucoma suspects, and 17 glaucoma patients were included. Materials and Methods: High-density ONH and macula OCT-A scans were obtained in patients with and without surgical masks. Seven different artifacts (motion, decentration, defocus, shadow, segmentation failure, blink, and Z-offset) were quantitatively evaluated by 2 trained graders. The changes in the area (% of scan area) of artifacts, without and with mask wearing, and differences of vessel density were evaluated. Results: Trends of increasing motion artifact area for the ONH scans [4.23 (−0.52, 8.98) %, P =0.08] and defocus artifact area for the macular scans [1.06 (−0.14, 2.26) %, P =0.08] were found with face mask wear. However, there were no significant differences in the mean % area of any artifacts ( P >0.05 for all). Further, the estimated mean difference in vessel density in images acquired without and with masks was not significant for any type of artifact. Conclusion: Face mask wearing had no significant effect onAbstract : Précis: Face mask wearing has no significant effects on artifacts or vessel density measurements in optic nerve head (ONH) and macular optical coherence tomography-angiography (OCT-A) scans. Purpose: The aim was to assess the difference in area of artifacts observed in optical OCT-A scans with and without face mask wear and to verify if mask wear interferes with OCT-A vessel density measurements. Subjects and Controls: A total of 64 eyes of 10 healthy subjects, 4 ocular hypertensive, 8 glaucoma suspects, and 17 glaucoma patients were included. Materials and Methods: High-density ONH and macula OCT-A scans were obtained in patients with and without surgical masks. Seven different artifacts (motion, decentration, defocus, shadow, segmentation failure, blink, and Z-offset) were quantitatively evaluated by 2 trained graders. The changes in the area (% of scan area) of artifacts, without and with mask wearing, and differences of vessel density were evaluated. Results: Trends of increasing motion artifact area for the ONH scans [4.23 (−0.52, 8.98) %, P =0.08] and defocus artifact area for the macular scans [1.06 (−0.14, 2.26) %, P =0.08] were found with face mask wear. However, there were no significant differences in the mean % area of any artifacts ( P >0.05 for all). Further, the estimated mean difference in vessel density in images acquired without and with masks was not significant for any type of artifact. Conclusion: Face mask wearing had no significant effect on area of artifacts or vessel density measurements. OCT-A vessel density measurements can be acquired reliably with face mask wear during the pandemic. … (more)
- Is Part Of:
- Journal of glaucoma. Volume 31:Issue 6(2022)
- Journal:
- Journal of glaucoma
- Issue:
- Volume 31:Issue 6(2022)
- Issue Display:
- Volume 31, Issue 6 (2022)
- Year:
- 2022
- Volume:
- 31
- Issue:
- 6
- Issue Sort Value:
- 2022-0031-0006-0000
- Page Start:
- 399
- Page End:
- 405
- Publication Date:
- 2022-06-23
- Subjects:
- optical coherence tomography-angiography -- artifacts -- face mask -- pandemic -- imaging -- glaucoma -- vessel density
Glaucoma -- Periodicals
617.741005 - Journal URLs:
- http://ovidsp.ovid.com/ovidweb.cgi?T=JS&NEWS=n&CSC=Y&PAGE=toc&D=yrovft&AN=00061198-000000000-00000 ↗
http://www.glaucomajournal.com ↗
http://journals.lww.com/glaucomajournal/pages/default.aspx ↗
http://journals.lww.com ↗ - DOI:
- 10.1097/IJG.0000000000002019 ↗
- Languages:
- English
- ISSNs:
- 1057-0829
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4996.230000
British Library DSC - BLDSS-3PM
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