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存在中央光反射时眼底图像中视网膜血管直径测量的偏差。

Retinal Vessel Caliber Measurement Bias in Fundus Images in the Presence of the Central Light Reflex.

机构信息

Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.

Graduate School of Medical Sciences, Research School of Behavioural and Cognitive Neurosciences, University of Groningen, Groningen, the Netherlands.

出版信息

Transl Vis Sci Technol. 2023 Jul 3;12(7):16. doi: 10.1167/tvst.12.7.16.

DOI:10.1167/tvst.12.7.16
PMID:37450282
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10353742/
Abstract

PURPOSE

To investigate the agreement between a fundus camera and a scanning laser ophthalmoscope in retinal vessel caliber measurements and to identify whether the presence of the central light reflex (CLR) explains potential discrepancies.

METHODS

For this cross-sectional study, we obtained fundus camera and scanning laser ophthalmoscope images from 85 eyes of 85 healthy individuals (aged 50-65 years) with different blood pressure status. We measured the central retinal artery equivalent (CRAE) and central retinal artery vein equivalent (CRVE) with the Knudtson-Parr-Hubbard algorithm and assessed the CLR using a semiautomatic grading method. We used Bland-Altman plots, 95% limits of agreement, and the two-way mixed effects intraclass correlation coefficient for consistency [ICC(3,1)] to describe interdevice agreement. We used multivariable regression to identify factors associated with differences in between-device measurements.

RESULTS

The between-device difference in CRAE (9.5  µm; 95% confidence interval, 8.0-11.1  µm) was larger than the between-device difference in CRVE (2.9  µm; 95% confidence interval, 1.3-4.5  µm), with the fundus camera yielding higher measurements (both P < 0.001). The 95% fundus camera-scanning laser ophthalmoscope limits of agreement were -4.8 to 23.9  µm for CRAE and -12.0 to 17.8  µm for CRVE. The corresponding ICCs(3,1) were 0.89 (95% confidence interval, 0.83-0.92) and 0.91 (95% confidence interval, 0.86-0.94). The between-device CRAE difference was positively associated with the presence of a CLR (P = 0.002).

CONCLUSIONS

Fundus cameras and scanning laser ophthalmoscopes yield correlated but not interchangeable caliber measurements. The CLR induces bias in arteriolar caliber in fundus camera images, compared with scanning laser ophthalmoscope images.

TRANSLATIONAL RELEVANCE

Refined measurements could yield better estimates of the association between retinal vessel caliber and ophthalmic or systemic disease.

摘要

目的

研究眼底照相机和扫描激光检眼镜在视网膜血管口径测量中的一致性,并确定中央光反射(CLR)的存在是否可以解释潜在的差异。

方法

本横断面研究纳入了 85 名年龄在 50-65 岁之间的健康个体(根据血压状态分为不同组别)的 85 只眼的眼底照相机和扫描激光检眼镜图像。我们使用 Knudtson-Parr-Hubbard 算法测量中央视网膜动脉等效直径(CRAE)和中央视网膜动脉静脉等效直径(CRVE),并使用半自动分级方法评估 CLR。我们使用 Bland-Altman 图、95%一致性界限和双向混合效应组内相关系数 [ICC(3,1)] 来描述设备间的一致性。我们使用多元回归来确定与设备间测量差异相关的因素。

结果

眼底照相机和扫描激光检眼镜在 CRAE 方面的设备间差异(9.5 µm;95%置信区间,8.0-11.1 µm)大于在 CRVE 方面的设备间差异(2.9 µm;95%置信区间,1.3-4.5 µm),眼底照相机的测量值更高(均 P < 0.001)。眼底照相机-扫描激光检眼镜的 95%一致性界限为 CRAE 的-4.8 至 23.9 µm,CRVE 的-12.0 至 17.8 µm。相应的 ICC(3,1)分别为 0.89(95%置信区间,0.83-0.92)和 0.91(95%置信区间,0.86-0.94)。眼底照相机 CRAE 设备间差异与 CLR 的存在呈正相关(P = 0.002)。

结论

眼底照相机和扫描激光检眼镜的血管口径测量结果相关,但不可互换。与扫描激光检眼镜图像相比,眼底照相机图像中的 CLR 会导致小动脉口径出现偏差。

翻译后的文本

目的

研究眼底照相机和扫描激光检眼镜在视网膜血管口径测量中的一致性,并确定中央光反射(CLR)的存在是否可以解释潜在的差异。

方法

本横断面研究纳入了 85 名年龄在 50-65 岁之间的健康个体(根据血压状态分为不同组别)的 85 只眼的眼底照相机和扫描激光检眼镜图像。我们使用 Knudtson-Parr-Hubbard 算法测量中央视网膜动脉等效直径(CRAE)和中央视网膜动脉静脉等效直径(CRVE),并使用半自动分级方法评估 CLR。我们使用 Bland-Altman 图、95%一致性界限和双向混合效应组内相关系数 [ICC(3,1)] 来描述设备间的一致性。我们使用多元回归来确定与设备间测量差异相关的因素。

结果

眼底照相机和扫描激光检眼镜在 CRAE 方面的设备间差异(9.5 µm;95%置信区间,8.0-11.1 µm)大于在 CRVE 方面的设备间差异(2.9 µm;95%置信区间,1.3-4.5 µm),眼底照相机的测量值更高(均 P < 0.001)。眼底照相机-扫描激光检眼镜的 95%一致性界限为 CRAE 的-4.8 至 23.9 µm,CRVE 的-12.0 至 17.8 µm。相应的 ICC(3,1)分别为 0.89(95%置信区间,0.83-0.92)和 0.91(95%置信区间,0.86-0.94)。眼底照相机 CRAE 设备间差异与 CLR 的存在呈正相关(P = 0.002)。

结论

眼底照相机和扫描激光检眼镜的血管口径测量结果相关,但不可互换。与扫描激光检眼镜图像相比,眼底照相机图像中的 CLR 会导致小动脉口径出现偏差。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/0c8b14c9e554/tvst-12-7-16-f004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/c5258037ab5f/tvst-12-7-16-f001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/ffda6424fc8a/tvst-12-7-16-f002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/acc578562653/tvst-12-7-16-f003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/0c8b14c9e554/tvst-12-7-16-f004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/c5258037ab5f/tvst-12-7-16-f001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/ffda6424fc8a/tvst-12-7-16-f002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/acc578562653/tvst-12-7-16-f003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d9de/10353742/0c8b14c9e554/tvst-12-7-16-f004.jpg

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