IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
Purpose: To describe image artifacts of optical coherence tomography (OCT) angiography and their underlying causative mechanisms. To establish a common vocabulary for the artifacts observed. Methods: The methods by which OCT angiography images are acquired, generated, and displayed are reviewed a...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Ovid Technologies (Wolters Kluwer) - Lippincott Williams & Wilkins
2017
|
| Online Access: | http://hdl.handle.net/1721.1/110911 https://orcid.org/0000-0002-0828-4357 |
| _version_ | 1826213860291379200 |
|---|---|
| author | Spaide, Richard F. Waheed, Nadia K. Fujimoto, James G |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Spaide, Richard F. Waheed, Nadia K. Fujimoto, James G |
| author_sort | Spaide, Richard F. |
| collection | MIT |
| description | Purpose: To describe image artifacts of optical coherence tomography (OCT) angiography and their underlying causative mechanisms. To establish a common vocabulary for the artifacts observed.
Methods: The methods by which OCT angiography images are acquired, generated, and displayed are reviewed as are the mechanisms by which each or all of these methods can produce extraneous image information. A common set of terminology is proposed and used.
Results: Optical coherence tomography angiography uses motion contrast to image blood flow and thereby images the vasculature without the need for a contrast agent. Artifacts are very common and can arise from the OCT image acquisition, intrinsic characteristics of the eye, eye motion, image processing, and display strategies. Optical coherence tomography image acquisition for angiography takes more time than simple structural scans and necessitates trade-offs in flow resolution, scan quality, and speed. An important set of artifacts are projection artifacts in which images of blood vessels seem at erroneous locations. Image processing used for OCT angiography can alter vascular appearance through segmentation defects, and because of image display strategies can give false impressions of the density and location of vessels. Eye motion leads to discontinuities in displayed data. Optical coherence tomography angiography artifacts can be detected by interactive evaluation of the images.
Conclusion: Image artifacts are common and can lead to incorrect interpretations of OCT angiography images. Because of the quantity of data available and the potential for artifacts, physician interaction in viewing the image data will be required, much like what happens in modern radiology practice. |
| first_indexed | 2024-09-23T15:55:59Z |
| format | Article |
| id | mit-1721.1/110911 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:55:59Z |
| publishDate | 2017 |
| publisher | Ovid Technologies (Wolters Kluwer) - Lippincott Williams & Wilkins |
| record_format | dspace |
| spelling | mit-1721.1/1109112022-10-02T05:10:27Z IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY Spaide, Richard F. Waheed, Nadia K. Fujimoto, James G Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Fujimoto, James G Purpose: To describe image artifacts of optical coherence tomography (OCT) angiography and their underlying causative mechanisms. To establish a common vocabulary for the artifacts observed. Methods: The methods by which OCT angiography images are acquired, generated, and displayed are reviewed as are the mechanisms by which each or all of these methods can produce extraneous image information. A common set of terminology is proposed and used. Results: Optical coherence tomography angiography uses motion contrast to image blood flow and thereby images the vasculature without the need for a contrast agent. Artifacts are very common and can arise from the OCT image acquisition, intrinsic characteristics of the eye, eye motion, image processing, and display strategies. Optical coherence tomography image acquisition for angiography takes more time than simple structural scans and necessitates trade-offs in flow resolution, scan quality, and speed. An important set of artifacts are projection artifacts in which images of blood vessels seem at erroneous locations. Image processing used for OCT angiography can alter vascular appearance through segmentation defects, and because of image display strategies can give false impressions of the density and location of vessels. Eye motion leads to discontinuities in displayed data. Optical coherence tomography angiography artifacts can be detected by interactive evaluation of the images. Conclusion: Image artifacts are common and can lead to incorrect interpretations of OCT angiography images. Because of the quantity of data available and the potential for artifacts, physician interaction in viewing the image data will be required, much like what happens in modern radiology practice. National Institutes of Health (U.S.) (R01- EY011289-29) United States. Air Force Office of Scientific Research (FA9550-12-1-0449) 2017-08-02T15:51:46Z 2017-08-02T15:51:46Z 2015-11 Article http://purl.org/eprint/type/JournalArticle 0275-004X http://hdl.handle.net/1721.1/110911 Spaide, Richard F.; Fujimoto, James G. and Waheed, Nadia K. “IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY.” Retina 35, 11 (November 2015): 2163–2180 © 2015 Ophthalmic Communications Society, Inc https://orcid.org/0000-0002-0828-4357 en_US http://dx.doi.org/10.1097/iae.0000000000000765 Retina Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Ovid Technologies (Wolters Kluwer) - Lippincott Williams & Wilkins PMC |
| spellingShingle | Spaide, Richard F. Waheed, Nadia K. Fujimoto, James G IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title | IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title_full | IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title_fullStr | IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title_full_unstemmed | IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title_short | IMAGE ARTIFACTS IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY |
| title_sort | image artifacts in optical coherence tomography angiography |
| url | http://hdl.handle.net/1721.1/110911 https://orcid.org/0000-0002-0828-4357 |
| work_keys_str_mv | AT spaiderichardf imageartifactsinopticalcoherencetomographyangiography AT waheednadiak imageartifactsinopticalcoherencetomographyangiography AT fujimotojamesg imageartifactsinopticalcoherencetomographyangiography |