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Updated: Dec 31, 2025

Development of an Uncomplicated Mild Traumatic Brain Injury Model Modified by Weight-Drop Method and Evidenced by Magnetic Resonance Imaging

Development of an Uncomplicated Mild Traumatic Brain Injury Model Modified by Weight-Drop Method and Evidenced by Magnetic Resonance Imaging

Published on: April 11, 2025

Structural and Volumetric Brain MRI Findings in Mild Traumatic Brain Injury.

J B Patel^1,2, S H Wilson³, T R Oakes^1,4

¹From Lovelace Biomedical Research (J.B.P., T.R.O., P.S.), Albuquerque, New Mexico.

AJNR. American Journal of Neuroradiology

|January 4, 2020

Summary

This summary is machine-generated.

Mild traumatic brain injury (mTBI) can cause white matter abnormalities and reduced brain volumes, detectable with advanced MRI. These findings, particularly frontal white matter changes, aid in diagnosing mTBI when clinical history is present.

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Area of Science:

Neuroimaging
Radiology
Neurology

Background:

Routine MRI often shows normal findings after mild traumatic brain injury (mTBI), limiting its diagnostic and prognostic value.
Advanced MRI techniques can detect subtle pathology and aid prognostication but are not widely accessible.
High-resolution 3D isotropic MRI sequences are becoming available in community settings.

Purpose of the Study:

To compare radiologist findings and quantify regional brain volumes in individuals with mTBI versus controls using advanced MRI.
To identify structural imaging findings associated with mTBI using 3D isotropic MRI sequences.

Main Methods:

Seventy-one military personnel with persistent mTBI symptoms and 75 controls underwent 3T MRI.
Scans were interpreted by three neuroradiologists using standardized data elements.
Regional gray and white matter volumes were quantified using FreeSurfer software.

Main Results:

White matter (WM) hyperintensities were observed in 81% of the mTBI group versus 60% of controls.
The odds of WM hyperintensities were 3.5 times higher in the mTBI group, with a frontal lobe predilection.
Decreased volumes were noted in 7 gray matter, 1 white matter, and 2 subcortical gray matter regions in the mTBI cohort.

Conclusions:

WM findings in mTBI are nonspecific but a frontal predilection is notable.
Advanced MRI can reveal regional brain volume loss and white matter abnormalities in mTBI.
Consider mTBI in the differential diagnosis of multifocal white matter abnormalities, especially with frontal involvement.