Abstract:
:Especially since the incorporation of swept laser sources, optical coherence tomography angiography (OCTA) has enabled quantification of choriocapillaris perfusion. A critical step in this process is binarization, which makes angiographic images quantifiable in terms of perfusion metrics. It remains challenging to have confidence that choriocapillaris perfusion metrics reflect the reality of pathophysiologic flow, largely because choice of binarization method can result in significantly different perfusion metric outcomes. This commentary discusses a proof-of-concept case involving comparative assessment of binarization methods for a set of dry age-related macular degeneration OCTA data. One of these methods was deemed preferable based on superior agreement with suspected physiologic and pathophysiologic characteristics, thus demonstrating the principle that, in the absence of gold standards for measurement of choriocapillaris perfusion, the best available approximations of pathophysiology may be used to guide choice of binarization method.
journal_name
Transl Vis Sci Technoljournal_title
Translational vision science & technologyauthors
Braun PX,Mehta N,Gendelman I,Alibhai AY,Baumal CR,Duker JS,Waheed NKdoi
10.1167/tvst.9.8.44subject
Has Abstractpub_date
2020-07-29 00:00:00pages
44issue
8issn
2164-2591pii
TVST-19-2065journal_volume
9pub_type
杂志文章abstract:Purpose:Mapping of epithelial thickness (ET) is useful for detection of keratoconus, a disease characterized by corneal thinning and bulging in which epithelial thinning occurs over the apex. In prior clinical studies, optical coherence tomography (OCT) measurements of ET were systematically thinner than those obtained...
journal_title:Translational vision science & technology
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journal_title:Translational vision science & technology
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