1700 nm optical coherence microscopy enables minimally invasive, label-free, in vivo optical biopsy deep in the mouse brain.
1700 nm optical coherence microscopy enables minimally invasive, label-free, in vivo optical biopsy deep in the mouse brain.
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1700 nm光学相干显微镜使小鼠大脑深处的微创、无标记活体光学活组织检查成为可能。
DOI:
10.1038/s41377-021-00586-7
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发表时间:
2021-07-14
期刊:
影响因子:
--
通讯作者:
Srinivasan VJ
中科院分区:
文献类型:
--
作者:
Zhu J;Freitas HR;Maezawa I;Jin LW;Srinivasan VJ
In vivo, minimally invasive microscopy in deep cortical and sub-cortical regions of the mouse brain has been challenging. To address this challenge, we present an in vivo high numerical aperture optical coherence microscopy (OCM) approach that fully utilizes the water absorption window around 1700 nm, where ballistic attenuation in the brain is minimized. Key issues, including detector noise, excess light source noise, chromatic dispersion, and the resolution-speckle tradeoff, are analyzed and optimized. Imaging through a thinned-skull preparation that preserves intracranial space, we present volumetric imaging of cytoarchitecture and myeloarchitecture across the entire depth of the mouse neocortex, and some sub-cortical regions. In an Alzheimer’s disease model, we report that findings in superficial and deep cortical layers diverge, highlighting the importance of deep optical biopsy. Compared to other microscopic techniques, our 1700 nm OCM approach achieves a unique combination of intrinsic contrast, minimal invasiveness, and high resolution for deep brain imaging. 1700 nm optical coherence microscopy images neurons and axonal myelination across the mouse neocortex and some sub-cortical regions, based on intrinsic tissue contrast, with minimal invasiveness.
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影响因子:
1.9
作者:
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通讯作者:
QUERRY, MR
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48
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Kleinfeld, David
影响因子:
64.8
作者:
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通讯作者:
Hyman, Bradley T.