高动态范围光学相干断层扫描血管造影术（HDR-OCTA）。
High dynamic range optical coherence tomography angiography (HDR-OCTA).
作者信息
Wei Xiang, Hormel Tristan T, Pi Shaohua, Guo Yukun, Jian Yifan, Jia Yali
机构信息
Casey Eye Institute, Oregon Health & Science University, Portland, OR, 97239, USA.
Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, 97239, USA.
出版信息
Biomed Opt Express. 2019 Jun 24;10(7):3560-3571. doi: 10.1364/BOE.10.003560. eCollection 2019 Jul 1.
Abstract
The dynamic range of current optical coherence tomography (OCT) angiography (OCTA) images is limited by the fixed scanning intervals. High speed OCT devices introduce the possibility of extending the flow signal dynamic range. In this study, we created a novel scanning pattern for achieving high dynamic range (HDR)-OCTA with a superior scanning efficiency. We implemented a bidirectional, interleaved scanning pattern that is sensitive to different flow speeds by adjustable adjacent inter-scan time intervals. We found that an improved flow dynamic range can be achieved by generating 3 different B-scan time intervals using 3 repetitions.
摘要
当前光学相干断层扫描血管造影（OCTA）图像的动态范围受固定扫描间隔的限制。高速OCT设备为扩展血流信号动态范围提供了可能。在本研究中，我们创建了一种新颖的扫描模式，以实现具有卓越扫描效率的高动态范围（HDR）-OCTA。我们采用了一种双向交错扫描模式，通过可调节的相邻扫描时间间隔对不同流速敏感。我们发现，通过使用3次重复生成3种不同的B扫描时间间隔，可以实现血流动态范围的改善。
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