3D Scanning Technology Bridging Microcircuits and Macroscale Brain Images in 3D Novel Embedding Overlapping Protocol

Area of Science:

• Neuroscience
• Biotechnology
• Imaging Technology

Background:

• The human brain operates across macroscopic and microscopic scales, with distinct electrical signals.
• Current macroscopic imaging like MRI has limited resolution (0.1-1 mm³ voxels).
• Previous studies noted non-uniform neuronal structures within MRI voxels.

Purpose of the Study:

• To develop a method for accurately embedding microscopic neural data into macroscopic brain maps.
• To repurpose 3D scanning technology for biological imaging, preserving neuronal activity.
• To create a comprehensive understanding of brain connectivity architectures (microconnectome).

Main Methods:

• Developed a 3D scanning protocol for imaging delicate, moist biological samples.
• Optimized scanning speed to prevent brain tissue degradation and preserve natural neuronal spikes.
• Integrated data from MRI and 3D scanner surface images.

Main Results:

• Achieved high accuracy in 3D imaging of living brain tissue, with a distance error of only 50 μm between MRI and 3D scans.
• Demonstrated stability of this accuracy across different individual mice.
• Successfully bridged macroscopic and microscopic brain data using the 3D-NEO protocol.

Conclusions:

• The 3D novel embedding overlapping (3D-NEO) protocol effectively integrates microconnectome data with macroscopic brain imaging.
• This novel approach accelerates scientific discovery in understanding brain connectivity.
• Repurposed 3D scanning technology offers a powerful tool for neuroscience research.