早期糖尿病视网膜病变评估与OCTA:关于血管分支和碎片化的研究
Yao Yu1,2, Shiwei Cui1, Yang He1
1School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, China.
Investigative ophthalmology & visual science
|December 10, 2024
概括
定量光学连贯断层扫描血管学 (OCTA) 显示,在早期糖尿病视网膜病变 (DR) 中,分支减少 (分支节点数/密度) 和血管碎片化增加 (终点密度,碎片化血管细分数,碎片化血管长度比率). 这些OCTA指标有助于早期发现DR.
科学领域:
- 眼科医生 眼科 眼科
- 医疗成像医学成像
- 糖尿病学 糖尿病学
背景情况:
- 糖尿病视网膜病变 (DR) 是导致视力丧失的主要原因.
- 早期发现和监测DR对于有效管理至关重要.
- 光学连贯断层扫描血管造影 (OCTA) 提供了视网膜血管系统的非侵入性可视化.
研究的目的:
- 用OCTA量化评估临床前和早期DR中的分支模式和血管碎片化.
- 为了确定OCTA指标,表明糖尿病患者眼睛的早期微血管变化.
- 评估这些指标对改善DR查的潜力.
主要方法:
- 对OCTA指标的定量分析,包括分支节点数 (BNN),分支节点密度 (BND),终点数 (EPN),终点密度 (EPD),碎片化血管细分数 (FVSC) 和碎片化血管长度比率 (FVLR).
- 测量是在表面和深血管 (SVP和DVP) 内的状和状区域进行的.
- 健康对照组 (HCs),没有DR的糖尿病 (没有DR) 和轻度DR组之间的比较.
主要成果:
- 与HC相比,轻度DR显示在视网膜两层的BNN和BND下降. 在DVP中,没有DR也显示了BND和BNN的下降.
- 在轻微的DR病例 (除状SVP外) 中,EPD显著增加,而EPN没有显著差异.
- 在温和的DR中,FVSC和FVLR在所有地区和层都显著增加,DPP的变化更为明显.
结论:
- 在DVP中的状BND和BNN表明在临床前的DR中血管变化.
- 在DVP中的EPD,FVSC和FVLR与早期DR变化相关,对早期检测有价值.
- 定量OCTA指数显示了通过划分微血管变化来改善DR查的潜在临床实用性.
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