扫描质量和 perfusion 密度在纵向光学相干断层扫描,血管图像扫描成像中的可变性
Corey A Smith1,2, Vanessa L Josey2, Michael E West2
1Department of Ophthalmology and Visual Sciences, Dalhousie University, Halifax, Nova Scotia, Canada corey.smith@dal.ca.
The British journal of ophthalmology
|October 19, 2023
概括
光学连贯断层扫描血管造影 (OCT-A) 测量结果显示,在青光眼患者和健康对照群中,随着时间的推移,学习效应. 这表明,经验增加改善了OCT-A成像中的 perfusion 密度读数.
科学领域:
- 眼科医生 眼科 眼科
- 医疗成像医学成像
- 玻璃眼研究研究 玻璃眼研究
背景情况:
- 光学连贯断层扫描血管造影 (OCT-A) 图像易发生变化.
- 学习对OCT-A测量的影响尚不清楚.
研究的目的:
- 调查OCT-A测量中是否存在学习效应.
- 评估经验是否会影响青光眼患者和健康对照组的 perfusion 密度读数.
主要方法:
- 在大约一年的时间内,对91名青光眼患者和54名健康对照进行了长度队列研究.
- 对15°×15° OCT-A扫描表面,中间和深血管的分析.
- 使用线性混合效应模型计算输液密度并调查其与随访时间的关联.
主要成果:
- 输液密度与扫描质量在两组中都有显著的正相关性.
- 随着时间的推移,观察到输液密度的增加,在调整扫描质量后仍存在 (每年1.75%).
结论:
- OCT-A的输液密度测量受到操作人员和/或参与者的累积经验的影响.
- 这些发现需要在解释纵向OCT-A数据时仔细考虑.
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