Quantitative assessment of choriocapillaris flow deficits in diabetic retinopathy: A swept-source optical coherence tomography angiography study.

Quantitative assessment of choriocapillaris flow deficits in diabetic retinopathy: A swept-source optical coherence tomography angiography study.
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DOI:
10.1371/journal.pone.0243830
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发表时间:
2020
期刊:
影响因子:
3.7
通讯作者:
Wang RK
Wang RK
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dai Y;Zhou H;Zhang Q;Chu Z;Olmos de Koo LC;Chao JR;Rezaei KA;Saraf SS;Wang RK

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使用扫源光学相干断层扫描血管造影 (SS-OCTA) 定量评估糖尿病视网膜病变 (DR) 眼的脉络膜毛细血管 (CC) 血流缺陷。招募具有不同 DR 阶段的糖尿病受试者和年龄匹配的健康受试者并使用 SS-OCTA 进行成像。 enface CC 血流图像是使用之前发布并经过验证的算法生成的。 CC 血流缺陷百分比 (FD%) 和平均 CC 血流缺陷大小是在 6×6 毫米扫描中以中央凹为中心的 5 毫米直径圆中计算的。该研究包括 45 名糖尿病受试者和 27 名对照受试者。糖尿病眼的 CC FD% 平均比对照眼高 1.4 倍(12.34±4.14% vs 8.82±2.61%,P < 0.001)。糖尿病眼的平均 CC FD 大小平均比对照眼大 1.4 倍(2151.3±650.8μm2 vs 1574.4±255.0μm2,P < 0.001)。在非增殖性 DR 眼和增殖性 DR 眼之间,未观察到 CC FD% 或平均 CC FD 大小存在显着差异(分别为 P = 1.000 和 P = 1.000)。 DR 中的 CC 灌注可以通过 FD% 和 FD 大小进行客观定量评估。在黄斑区域,患有 DR 的眼睛的 CC FD% 和 CC FD 大小均增加。 SS-OCTA 为糖尿病体内 CC 灌注状态的研究提供了新的见解。
To quantitatively assess choriocapillaris (CC) flow deficits in eyes with diabetic retinopathy (DR) using swept-source optical coherence tomography angiography (SS-OCTA). Diabetic subjects with different stages of DR and age-matched healthy subjects were recruited and imaged with SS-OCTA. The en face CC blood flow images were generated using previously published and validated algorithms. The percentage of CC flow deficits (FD%) and the mean CC flow deficit size were calculated in a 5-mm-diameter circle centered on the fovea from the 6×6-mm scans. Forty-five diabetic subjects and 27 control subjects were included in the study. The CC FD% in diabetic eyes was on average 1.4-fold greater than in control eyes (12.34±4.14% vs 8.82±2.61%, P < 0.001). The mean CC FD size in diabetic eyes was on average 1.4-fold larger than in control eyes (2151.3± 650.8μm2 vs 1574.4±255.0 μm2, P < 0.001). No significant difference in CC FD% or mean CC FD size was observed between eyes with nonproliferative DR and eyes with proliferative DR (P = 1.000 and P = 1.000, respectively). CC perfusion in DR can be objectively and quantitatively assessed with FD% and FD size. In the macular region, both CC FD% and CC FD size are increased in eyes with DR. SS-OCTA provides new insights for the investigations of CC perfusion status in diabetes in vivo.
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