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IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY.

Richard F Spaide1, James G Fujimoto, Nadia K Waheed

  • 1*Vitreous, Retina, Macula Consultants of New York, New York, New York; †Department of Electrical Engineering & Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts; and ‡Department of Ophthalmology, Tufts University School of Medicine, Boston, Massachusetts.

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Summary
This summary is machine-generated.

Image artifacts are common in optical coherence tomography (OCT) angiography, potentially leading to misinterpretations. Understanding these artifacts, arising from acquisition to display, is crucial for accurate analysis.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Optical coherence tomography (OCT) angiography visualizes vasculature without contrast agents.
  • It relies on motion contrast to detect blood flow.
  • Artifacts can significantly impact image interpretation.

Purpose of the Study:

  • To detail image artifacts in OCT angiography.
  • To explain the mechanisms causing these artifacts.
  • To standardize terminology for observed artifacts.

Main Methods:

  • Review of OCT angiography image acquisition, generation, and display processes.
  • Analysis of mechanisms leading to extraneous image information.
  • Proposal and application of a common artifact terminology.

Main Results:

  • OCT angiography artifacts stem from image acquisition, ocular characteristics, eye motion, processing, and display.
  • Projection artifacts place vessels in incorrect locations.
  • Image processing and display can distort vascular appearance and perceived density.

Conclusions:

  • Artifacts are prevalent in OCT angiography and can cause incorrect interpretations.
  • Physician interaction is essential for accurate image review, similar to radiology practices.