在健康志愿者中验证补偿算法使用光谱域光学一致性断层扫描血管造影
Giulia Corradetti1,2, Zhongdi Chu3, Louay Almidani1,4
1Doheny Image Reading and Research Lab (DIRRL) - Doheny Eye Institute, Pasadena, CA, USA.
Current eye research
|June 7, 2025
概括
一种新的光谱域光连贯断层扫描血管学 (SD-OCTA) 算法有效地弥补了面向OCTA板块的胆囊 (CC) 中的信号减弱,而不会改变健康眼睛的流量缺陷测量.
科学领域:
- 眼科医生 眼科 眼科
- 医疗成像医学成像
- 光学一致性断层扫描技术
背景情况:
- 使用光谱域光学连贯断层扫描血管造影 (SD-OCTA) 进行胆囊细胞 (CC) 成像可能会受到信号衰减的影响.
- 精确量化CC流量缺陷 (CC FD %) 对于诊断和监测各种眼部疾病至关重要.
研究的目的:
- 开发和验证SD-OCTA的设备特定算法,以纠正CC面对OCTA板块的信号减弱.
- 评估这种补偿算法对健康人群中CC FD %测量的影响.
主要方法:
- 使用6x6毫米的图案,用SD-OCTA对健康受试者进行成像.
- CC板块被细分和规范化;CCFD%在应用SD-OCTA特定补偿算法之前和之后被计算出来.
- 将SD-OCTA算法的性能与之前开发的SS-OCTA补偿算法进行了比较.
主要成果:
- 特定的SD-OCTA算法显示,补偿和未补偿图像之间的CC FD%没有统计学上显著的差异 (p=0.1).
- 补偿和未补偿的CC FD测量有很强的相关性 (p<0.001),Bland-Altman图表显示的良好一致性.
- 将SS-OCTA算法应用于SD-OCTA数据,导致CC FD%的统计学上显著差异 (p<0.0001).
结论:
- 针对SD-OCTA的设备特定补偿算法可以应用于CC面板,而不会引入人为的流量缺陷.
- 经过验证的算法在健康眼睛的补偿和未补偿图像中产生了类似的CC FD%值.
- 这种算法对于SD-OCTA成像中准确的CC分析至关重要.
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