지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.12
- 수록면
- 518 - 526 (9page)
- DOI
- 10.3341/kjo.2022.0089
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초록· 키워드
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Purpose: To compare the fractal dimensions of the peripapillary microvasculature as obtained by optical coherence tomographyangiography (OCTA) between primary open-angle glaucoma (POAG) and controls.Methods: Optic nerve head and peripapillary area images were taken using the 20° × 20°-scan of Spectralis OCTA (HeidelbergEngineering) in 97 subjects (64 POAG patients, 33 control patients). The optic nerve head microvasculature was evaluatedaccording to predefined slabs: the superficial vascular complex (SVC) and the avascular complex (AVC). The en face image ofeach slab was processed by ImageJ software (National Institutes of Health) in order to calculate the vessel density and thefractal dimension using the box-counting method. For comparison, the peripapillary retinal nerve fiber layer (RNFL) thicknesswas obtained from Spectralis OCT circle scans. The utilities of the parameters for discriminating between the POAG and controlgroups were assessed using areas under the receiver operating characteristic curves (AUCs).Results: The SVC fractal dimension was lower in the POAG than in the control group (p < 0.001), while AVC showed no intergroupdifference (p = 0.563). The fractal dimension showed a good correlation with the vessel density in both SVC and AVC(both p < 0.001). In a multivariable regression analysis, the SVC fractal dimension was negatively correlated with age (p < 0.001)and axial length (p < 0.001) and positively correlated with average RNFL thickness (p < 0.001), while the AVC fractal dimensionwas positively correlated with the Bruch’s membrane opening size (p = 0.013). In terms of diagnostic utility, the AUC was significantlylarger for the average RNFL thickness (AUC, 0.889) than for the SVC fractal dimension (AUC, 0.772; p = 0.008).Conclusions: The fractal dimension of SVC was associated with the average RNFL thickness and was reduced in POAG patients.Fractal dimension analysis could be used in evaluating peripapillary vascularity by OCTA.
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