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. Author manuscript; available in PMC: 2023 Feb 1.
Published in final edited form as: Retina. 2022 Feb 1;42(2):328–335. doi: 10.1097/IAE.0000000000003313

Figure 3. New Method for Reducing Artifactual Flow Deficits Caused by OCT Compensation in the Choriocapillaris.

Figure 3.

(A) Original Zeiss Angioplex OCTA of the choriocapillaris with dotted line showing location of OCTA B-scan in (F). (B) Original structural OCT of the choriocapillaris with same segmentation as (A) and areas of hyperreflectivity (arrows). (C) Inverted and blurred structural OCT now with areas of hyporeflectivity (arrows). (D) Compensated OCTA as a result of multiplication of (A) x (C) showing new flow deficits (arrows). (E) Original OCTA of the superficial capillary plexus. (G) Structural OCT of the choriocapillaris using the modified algorithm that removes hyperreflective areas (arrows). (H) Inverted and blurred structural OCT without hyporeflective areas (arrows). (I) Compensated OCTA as a result of multiplication of (A) x (H) using the modified algorithm, which reduces artifactual flow deficits (arrows). (J) Vessel segmentation of the superficial capillary plexus using Max Entropy plugin. White regions (vessels) were removed from the final binarized images before quantifying flow deficits.