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Relationship between angiographic and optical coherence tomographic (OCT) parameters for quantifying choroidal neovascular lesions

  • Retinal Disorders
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Abstract

Background

To correlate the volume of various spaces on optical coherence tomography (OCT) with fluorescein angiographic (FA) parameters in neovascular age-related macular degeneration (AMD).

Methods

Sixty-five consecutive cases of active subfoveal choroidal neovascularization (CNV) associated with AMD were retrospectively collected. Area and greatest linear dimension of CNV lesion components were calculated on FA. Corresponding StratusOCT image sets were analyzed using custom software (termed OCTOR), which allows manual measurement of the volume of the neurosensory retina, subretinal fluid, subretinal tissue, and pigment epithelial detachment (PED).

Results

Area of occult CNV on FA correlated with PED (R = 0.62) and subretinal fluid (R = 0.28) volume and negatively with subretinal tissue volume (R = −0.26) on OCT. Area of classic CNV on FA correlated with subretinal tissue (R = 0.60) and retinal (R = 0.38) volume on OCT. Automated StratusOCT output values showed poorer correlations than manually calculated OCTOR values.

Conclusions

OCT features of CNV lesions as measured by manual quantitative subanalysis correlate better with angiographic parameters than values provided by the automated StratusOCT analysis. These measures may improve our understanding of the morphologic effects of CNV lesions and may facilitate the development of a hybrid FA and OCT-based classification system for future clinical trials, which more fully characterizes CNV lesions.

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Correspondence to Srinivas R. Sadda.

Additional information

Results of this study were presented as a poster at the 106th DOG annual meeting in September 2009.

This study was supported in part by NIH Grant EY03040 and NEI Grant R01 EY014375.

Drs. Walsh and Sadda are co-inventors of Doheny intellectual property related to optical coherence tomography that has been licensed by Topcon Medical Systems and are members of the scientific advisory board for Heidelberg Engineering. However, it is not related to the article’s subject matter.

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Sadda, S.R., Liakopoulos, S., Keane, P.A. et al. Relationship between angiographic and optical coherence tomographic (OCT) parameters for quantifying choroidal neovascular lesions. Graefes Arch Clin Exp Ophthalmol 248, 175–184 (2010). https://doi.org/10.1007/s00417-009-1193-4

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  • DOI: https://doi.org/10.1007/s00417-009-1193-4

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