ClearScope: a fully integrated light sheet theta microscope for sub-cellular resolution imaging without lateral size...

Area of Science:

• Neuroscience and Biomedical Imaging

Background:

• Three-dimensional (3D) ex vivo imaging of intact, cleared brains is crucial for understanding neural connectivity and neurological disorders.
• Light-sheet microscopy offers rapid, high-resolution imaging of large samples but is limited by orthogonal illumination and detection optics.
• Existing light-sheet microscopy struggles with imaging the full lateral (XY) size of large specimens.

Purpose of the Study:

• To develop a next-generation, integrated, and user-friendly light sheet theta microscopy (LSTM) system.
• To enable rapid, uniform, sub-cellular resolution 3D imaging of large intact brain specimens without lateral size constraints.
• To provide a comprehensive workflow for image acquisition, processing, and quantitative analysis.

Main Methods:

• Development of a fully integrated and user-friendly light sheet theta microscopy (LSTM) system.
• Implementation of a unique optical arrangement with oblique illumination paths relative to the detection path.
• Creation of a seamless workflow encompassing image acquisition, data management, and quantitative analysis.

Main Results:

• Demonstrated high-resolution 3D imaging of intact mouse and human brain samples using the developed LSTM system.
• Achieved uniform sub-cellular resolution imaging throughout large specimens.
• Successfully performed quantitative analyses including digital neuron tracing, vessel reconstruction, and stereological analysis.

Conclusions:

• The enhanced LSTM system provides rapid, user-friendly, and high-resolution 3D imaging capabilities for large intact brain specimens.
• This technology facilitates comprehensive quantitative mapping of molecular and cellular features in diverse large samples.
• The system enables advanced analysis of neural networks and pathological alterations in neurological and neuropsychiatric disorders.