There is a brave new world of imaging that is revealing the inner structures of the brain.

CAT: Computerized Axial Tomography

MRI: Magnetic Resonance Imaging

fMRI: functional Magnetic Resonance Imaging

PET: Positron Emission Tomography

and now the new ones….

OCT: Optical Coherence Tomography

DTI: Diffusion Tensor Imaging

DKI: Diffusion Kutosis Imaging

Hand drawing of the corpus callosum


Cadaver and Drawing


Frank Netter

Original drawing from Frank NEtter 1950


MRI Magnetic Resonance Imaging



DTI: Diffusion Tensor Imaging (Dorsal View, overlaid on MRI)

This is a map of nerve fibers in the human brain. It was constructed using a special MRI scanning technique called diffusion tensor imaging (DTI) that traces the direction of water flow. Water diffuses along the fatty sheaths around nerve fibers, rather than through them, so tracing water flow in the brain reveals this complex network of fibers.


DTI: Diffusion Tensor Imaging (Sagittal View)


DTI Sagittal view


DTI: Diffusion Tensor Imaging (Coronal View)