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首页> 外文期刊>Optics Letters >Quantitative imaging of microvascular blood flow networks in deep cortical layers by 1310 nm mu ODT
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Quantitative imaging of microvascular blood flow networks in deep cortical layers by 1310 nm mu ODT

机译:1310 nm mu ODT对深层皮层中微血管血流网络的定量成像

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摘要

There is growing interest in new neuroimage techniques that permit not only high-resolution quantification of cerebral blood flow velocity (CBFv) in capillaries, but also a large field of view to map the CBFv network dynamics. Such image capabilities are of great importance for decoding the functional difference across multiple cortical layers under stimuli. To tackle the limitation of optical penetration depth, we present a new ultrahigh-resolution optical coherence Doppler tomography (mu ODT) system at 1310 nm and compare it with a prior 800 nm mu ODT system for mouse brain 3D CBFv imaging. We show that the new 1310 nm mu ODT allows for dramatically increased depth (similar to 4 times) of quantitative CBFv imaging to 1.4 mm, thus covering the full thickness of the mouse cortex (i.e., layers I-VI). Interestingly, we show that such a unique 3D CBFv imaging capability allows identification of microcirculatory redistribution across different cortical layers resulting from repeated cocaine exposures. (C) 2015 Optical Society of America
机译:人们对新的神经影像技术越来越感兴趣,这种技术不仅可以对毛细血管中的脑血流速度(CBFv)进行高分辨率量化,而且还可以提供广阔的视野来绘制CBFv网络动态图。这种图像功能对于在刺激下解码多个皮质层之间的功能差异非常重要。为了解决光学穿透深度的限制,我们提出了一种在1310 nm处的新型超高分辨率光学相干多普勒层析成像(mu ODT)系统,并将其与用于小鼠脑3D CBFv成像的现有800 nm mu ODT系统进行了比较。我们显示,新的1310 nm mu ODT可以将定量CBFv成像的深度显着增加(接近4倍)至1.4 mm,从而覆盖了小鼠皮质的整个厚度(即I-VI层)。有趣的是,我们证明了这种独特的3D CBFv成像功能可以识别由于反复可卡因暴露而导致的不同皮质层之间微循环的重新分布。 (C)2015年美国眼镜学会

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