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Method for single illumination source combined optical coherence tomography and fluorescence imaging of fluorescently labeled ocular structures in transgenic mice

机译:转基因小鼠单相光源结合光学相干断层扫描和荧光标记眼结构荧光成像的方法

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摘要

In vivo imaging permits longitudinal study of ocular disease processes in the same animal over time. Two different in vivo optical imaging modalities – optical coherence tomography (OCT) and fluorescence – provide important structural and cellular data respectively about disease processes. In this Methods in Eye Research article, we describe and demonstrate the combination of these two modalities producing a truly simultaneous OCT and fluorescence imaging system for imaging of fluorescently labeled animal models. This system uses only a single light source to illuminate both modalities, and both share the same field of view. This allows simultaneous acquisition of OCT and fluorescence images, and the benefits of both techniques are realized without incurring increased costs in variability, light exposure, time, and post-processing effort as would occur when the modalities are used separately. We then utilized this system to demonstrate multi-modal imaging in a progression of samples exhibiting both fluorescence and OCT scattering beginning with resolution targets, ex vivo thy1-YFP labeled neurons in mouse eyes, and finally an in vivo longitudinal time course of GFP labelled myeloid cells in a mouse model of ocular allergy.
机译:体内成像允许对同一只动物随时间推移的眼部疾病过程进行纵向研究。两种不同的体内光学成像方式-光学相干断层扫描(OCT)和荧光-分别提供有关疾病过程的重要结构和细胞数据。在这篇《眼部研究方法》一文中,我们描述并演示了这两种模式的组合,可产生真正同时的OCT和荧光成像系统,用于荧光标记的动物模型的成像。该系统仅使用单个光源来照亮两种模式,并且共享相同的视野。这样就可以同时获取OCT和荧光图像,并且可以实现这两种技术的优点,而不会引起可变性,曝光量,时间和后处理工作量方面的成本增加(如单独使用这些模式时会发生这种情况)。然后,我们利用该系统在样品中展示了多模态成像,这些样品同时显示了荧光和OCT散射,其中包括分辨率目标,小鼠眼中离体thy1-YFP标记的神经元,最后是GFP标记的骨髓的体内纵向时间眼过敏小鼠模型中的细胞。

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