Mean-Subtraction Method for De-Shadowing of Tail Artifacts in Cerebral OCTA Images: A Proof of Conceptopen access
- Authors
- Choi, Woo June; Paulson, Bjorn; Yu, Sungwook; Wang, Ruikang K.; Kim, Jun Ki
- Issue Date
- May-2020
- Publisher
- MDPI
- Keywords
- optical coherence tomography; OCT angiography; tail artifact; mean-subtraction
- Citation
- MATERIALS, v.13, no.9
- Journal Title
- MATERIALS
- Volume
- 13
- Number
- 9
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/41744
- DOI
- 10.3390/ma13092024
- ISSN
- 1996-1944
1996-1944
- Abstract
- When imaging brain vasculature with optical coherence tomography angiography (OCTA), volumetric analysis of cortical vascular networks in OCTA datasets is frequently challenging due to the presence of artifacts, which appear as multiple-scattering tails beneath superficial large vessels in OCTA images. These tails shadow underlying small vessels, making the assessment of vascular morphology in the deep cortex difficult. In this work, we introduce an image processing technique based on mean subtraction of the depth profile that can effectively reduce these tails to better reveal small hidden vessels compared to the current tail removal approach. With the improved vascular image quality, we demonstrate that this simple method can provide better visualization of three-dimensional vascular network topology for quantitative cerebrovascular studies.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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