化德鲁森防止检测的底层胆囊使用扫描源光学一致性断层扫描血管学
Yuxuan Cheng1, Farhan Hiya2, Jianqing Li2
1Department of Bioengineering, University of Washington, Seattle, Washington, United States.
Investigative ophthalmology & visual science
|June 17, 2024
概括
在与年龄相关的黄斑变性 (AMD) 中,化德鲁森 (CaD) 产生光学错觉,阻止精确测量胆角毛囊体流量缺陷 (CCFD). 研究人员发现,CaD文物掩盖了真正的CCFD,需要将其排除在AMD分析之外.
科学领域:
- 眼科医生 眼科 眼科
- 医疗成像医学成像
- 视网膜疾病 视网膜疾病
背景情况:
- 与年龄相关的黄斑变性 (AMD) 是导致视力丧失的主要原因.
- 在AMD中,在柔软的Drusen下,可以测量出胆管膜流量缺陷 (CCFDs).
- 在 Calcified Drusen (CaD) 下量化CCFD的能力是未知的.
研究的目的:
- 调查CCFD是否可以在AMD眼睛的CaD下量化.
- 为了比较CCFD在软德鲁森下的测量与CaD.
主要方法:
- 在正常眼睛中测量了CCFD,在软德鲁森的AMD眼睛中测量了AMD眼睛,在CaD的AMD眼睛中测量了AMD眼睛.
- 面对面的光学连贯性断层扫描 (OCT) 和B扫描被用于为CCFD,软德鲁森和CaD制造口罩.
- 子相似系数评估重叠,幻影实验模拟了CaD光散射效应.
主要成果:
- CCFD测量与CaD面积相关,但没有软德鲁森面积.
- 在CaD下,OCT信号是光散射的工件,而不是真正的CC层流.
- CaD阻止了光线的透,导致低传输缺陷,并掩盖了CC血流.
结论:
- 化德鲁森可以创建模仿CCFD的人工信号,防止可靠的测量.
- 由于光散射特性,CCFD在CaD下无法准确量化.
- 在测量AMD中的黄斑CCFD时,必须识别并排除CaD.
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