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Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...

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Related Experiment Video

Updated: Apr 7, 2026

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

Atlas-based templates vs. subject-specific tractography: resolving the debate.

Kurt G Schilling¹, Fan Zhang², J-Donald Tournier³

¹Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, USA.

Brain Structure & Function

|August 26, 2025

Summary

This summary is machine-generated.

This debate explores whether white matter atlas templates are sufficient or if subject-specific tractography offers unique insights. Tractography provides valuable individual brain connection data beyond atlas limitations.

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Last Updated: Apr 7, 2026

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Area of Science:

Neuroimaging
Neuroanatomy
Diffusion MRI

Background:

The International Society of Tractography (IST) held its first annual debate in 2024.
A key controversy debated was whether "Tractography cannot give us anything we can't get from an atlas template."
This highlights a fundamental discussion on the utility of standardized atlases versus individual brain mapping.

Purpose of the Study:

To examine the arguments surrounding the statement comparing tractography to atlas templates.
To introduce the core concepts of white matter atlas templates and subject-specific tractography.
To advocate for the value of tractography in neuroimaging research while recognizing the utility of atlases.

Main Methods:

Discussion and critical analysis of two distinct approaches to white matter pathway analysis.
Presentation of arguments supporting and refuting the claim that tractography offers no unique information compared to atlases.
Review of the strengths of both standardized atlas templates and in vivo subject-specific tractography.

Main Results:

White matter atlas templates offer standardized, population-based representations for group comparisons.
Subject-specific tractography enables in vivo "virtual dissection" of individual white matter connections using diffusion MRI.
The debate underscores that both methods have distinct advantages in understanding brain structure and connectivity.

Conclusions:

Subject-specific tractography provides unique insights into individual brain connectivity not fully captured by atlas templates.
Tractography's ability to perform in vivo "virtual dissection" is a significant advancement.
Both atlas-based and subject-specific approaches are valuable, offering complementary information in neuroscience.