Three-dimensional microtomographic imaging of human brain cortex

TL;DR

This paper presents an x-ray microtomographic method enhanced by metal staining to visualize the 3D microarchitecture of the human brain cortex, revealing detailed neural structures in gray and white matter.

Contribution

It introduces a novel imaging technique combining x-ray microtomography with metal staining to achieve high-resolution 3D visualization of human brain tissue.

Findings

Detailed 3D microarchitecture of gray and white matter revealed

Enhanced contrast allows visualization of neural networks

Method enables non-destructive imaging of brain tissue

Abstract

This paper describes an x-ray microtomographic technique for imaging the three-dimensional structure of the human cerebral cortex. Neurons in the brain constitute a neural circuit as a three-dimensional network. The brain tissue is composed of light elements that give little contrast in a hard x-ray transmission image. The contrast was enhanced by staining neural cells with metal compounds. The obtained structure revealed the microarchitecture of the gray and white matter regions of the frontal cortex, which is responsible for the higher brain functions.