视网膜前膜的成像偏振测量法及视网膜血管定量分析
Imaging polarimetry and retinal blood vessel quantification at the epiretinal membrane.
作者信息
Miura Masahiro, Elsner Ann E, Cheney Michael C, Usui Masahiko, Iwasaki Takuya
机构信息
Department of Ophthalmology, Tokyo Medical University, Japan.
出版信息
J Opt Soc Am A Opt Image Sci Vis. 2007 May;24(5):1431-7. doi: 10.1364/josaa.24.001431.
Abstract
We evaluated a polarimetry method to enhance retinal blood vessels masked by the epiretinal membrane. Depolarized light images were computed by removing the polarization retaining light reaching the instrument and were compared with parallel polarized light images, average reflectance images, and the corresponding images at 514 nm. Contrasts were computed for retinal vessel profiles for arteries and veins. Contrasts were higher in the 514 nm images in normal eyes but higher in the depolarized light image in the eyes with epiretinal membranes. Depolarized light images were useful for examining the retinal vasculature in the presence of retinal disease.
摘要
我们评估了一种偏振测定法，以增强被视网膜前膜遮盖的视网膜血管。通过去除到达仪器的保留偏振光来计算去偏振光图像，并将其与平行偏振光图像、平均反射率图像以及514 nm处的相应图像进行比较。计算动脉和静脉视网膜血管轮廓的对比度。在正常眼睛中，514 nm图像中的对比度更高，但在患有视网膜前膜的眼睛中，去偏振光图像中的对比度更高。去偏振光图像有助于在存在视网膜疾病的情况下检查视网膜血管系统。
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