Image artefacts in swept-source optical coherence tomography angiography

Falavarjani, Khalil Ghasemi; Al-Sheikh, Mayss; Akıl, Handan; Sadda, Srinivas R

doi:10.1136/bjophthalmol-2016-309104

Cited by 160 publications

(145 citation statements)

References 10 publications

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“…These include, but are not limited to, projection, segmentation, motion, masking, unmasking and blink artefacts 3 4. Spaide et al 3 speculated that in OCTA, the calibre of vessels may be depicted to be larger than in their real state, but vessels calibres were not specifically quantified in order to validate this hypothesis.…”

Section: Introductionmentioning

confidence: 99%

Retinal vessel calibre measurements by optical coherence tomography angiography

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Retinal vessel calibre measurements by optical coherence tomography angiography

et al. 2016

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“…This can produce artifacts, but allows for a more robust visualization of vasculature [26]. The exact localization and thickness of the CC slab vary between 0 and 34 µm below the RPE/Bruch's membrane reference and between 4.4 and 30 µm, respectively, depending on the device used [17,20,27,28]. Notably, manufacturers use various definitions of the CC slab level, and not all of them offer a presetting for CC examination yet (Table 1).…”

Section: Heidelberg Spectralismentioning

confidence: 99%

“…(2) Segmentation errors in OCTA are frequent in the presence of retinal pathologies and can affect all layers, including the CC [20]. Notably, en face imaging requires an accurate segmentation of retinal layers, which can be reliably achieved in normal maculae.…”

Section: Heidelberg Spectralismentioning

confidence: 99%

Optical Coherence Tomography Angiography Offers New Insights into Choriocapillaris Perfusion

Lauermann¹,

Eter²,

Alten³

2018

Ophthalmologica

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The choriocapillaris (CC) represents a fundamentally important vascular layer that is subject to physiologic changes with increasing age and that is also associated with a wide range of chorioretinal diseases. So far, information on blood flow in this specific layer has remained limited. With the advent of optical coherence tomography angiography (OCTA), new perspectives and possibilities of CC imaging have begun to evolve. This article shall review the opportunities and challenges of applying OCTA technology to the CC layer and summarize the current clinical efforts in OCTA CC imaging exemplarily in dry age-related macular degeneration and central serous chorioretinopathy.

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“…In recent studies, at least one form of artifact was identified in 73–89.4% of OCTA images with more prevalence in eyes with ocular pathology and poor visual acuity 33, 45. The artifacts were severe enough to preclude accurate grading of the images in 17.6% 41 . In addition, correction of artifacts such as segmentation artifact can be challenging.…”

mentioning

confidence: 99%