Artifacts and artifact removal in optical coherence tomographic angiography

Tristan T Hormel; David Huang; Yali Jia

doi:10.21037/qims-20-730

Artifacts and artifact removal in optical coherence tomographic angiography

Quant Imaging Med Surg. 2021 Mar;11(3):1120-1133. doi: 10.21037/qims-20-730.

Authors

Tristan T Hormel¹, David Huang¹, Yali Jia^{1

2}

Affiliations

¹ Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA.
² Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.

Abstract

Optical coherence tomographic angiography (OCTA) enables rapid imaging of retinal vasculature in three dimensions. While the technique has provided quantification of healthy vessels as well as pathology in several diseases, it is not unusual for OCTA data to contain artifacts that may influence measurement outcomes or defy image interpretation. In this review, we discuss the sources of several OCTA artifacts-including projection, motion, and signal reduction-as well as strategies for their removal. Artifact compensation can improve the accuracy of OCTA measurements, and the most effective use of the technology will incorporate hardware and software that can perform such correction.

Keywords: Optical coherence tomographic angiography (OCTA); artifact correction; imaging artifacts.

Publication types

Review

Abstract

Publication types

Grants and funding