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Related Experiment Video

Updated: Oct 4, 2025

A Comprehensive Protocol for Manual Segmentation of the Medial Temporal Lobe Structures

A Comprehensive Protocol for Manual Segmentation of the Medial Temporal Lobe Structures

Published on: July 2, 2014

Tractostorm 2: Optimizing tractography dissection reproducibility with segmentation protocol dissemination.

Francois Rheault¹, Kurt G Schilling^2,3, Alex Valcourt-Caron⁴

¹Electrical and Computer Engineering, Vanderbilt University, Nashville, Tennessee, USA.

Human Brain Mapping

|February 10, 2022

Summary

This summary is machine-generated.

An online tractography course and dissection protocol significantly improved the reproducibility of white-matter pathway segmentation in neuroimaging studies. This educational approach enhances consistency among raters over time.

Keywords:

WM pathways diffusion MRI reproducibility segmentation tractography virtual dissection

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Last Updated: Oct 4, 2025

A Comprehensive Protocol for Manual Segmentation of the Medial Temporal Lobe Structures

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Published on: July 2, 2014

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Published on: January 7, 2019

Area of Science:

Neuroimaging
Computational Neuroscience
Anatomy

Background:

Accurate segmentation of brain structures is vital for neuroimaging studies.
Variability in interpreting and executing dissections of white-matter (WM) pathways hinders consensus.
Existing methods for defining and teaching WM pathway anatomy are challenging.

Purpose of the Study:

To evaluate an online educational tractography course.
To investigate the impact of learning and practicing a dissection protocol on interrater reproducibility.
To quantify the effect of virtual education on WM pathway segmentation consistency.

Main Methods:

Twenty raters performed dissections of three WM bundles across five subjects with four timepoints.
Reproducibility was quantified using voxel-based Dice scores.
The study assessed the impact of an online educational module and protocol practice.

Main Results:

The combined dissection protocol and online course achieved high reproducibility (Dice score 0.85-0.90).
Reproducibility remained stable over time, indicating consistent performance after initial learning.
Virtual educational sessions demonstrably increased reproducibility compared to previous methods.

Conclusions:

The developed protocol and online course enhance the reproducibility of white-matter pathway dissections.
Virtual learning environments can effectively improve consistency in neuroanatomical segmentation.
Findings can inform the design of future dissection protocols and neuroanatomical definitions.