Differential Tractography and Correlation Tractography Findings on Patients With Mild Traumatic Brain Injury: A Pilot...

Area of Science:

• Neuroimaging
• Neurology
• Radiology

Background:

• Mild traumatic brain injury (mTBI) can cause subtle white matter injuries impacting cognition.
• New tractography methods like differential and correlation tractography offer potential for detecting these injuries.
• Their efficacy in mTBI patients remains largely uninvestigated.

Purpose of the Study:

• To investigate the utility of differential and correlation tractography in identifying white matter injuries in mTBI patients.
• To explore the relationship between white matter integrity and cognitive performance in mTBI.
• To assess the diagnostic and prognostic value of these tractography techniques in mTBI.

Main Methods:

• Diffusion MRI data were acquired from 33 mTBI patients and 31 healthy controls.
• Differential tractography was used to assess injured fiber bundles in 7 mTBI patients with follow-up scans.
• Correlation tractography was employed to link white matter pathways with cognitive test results (DSST, TMT-A).

Main Results:

• Differential tractography identified neuronal changes in the corpus callosum of all 7 follow-up mTBI patients.
• Correlation tractography revealed that the splenium of the corpus callosum, right superior longitudinal fasciculus, and right cingulum correlated with DSST performance in acute mTBI patients.
• Significant findings were observed with FDR correction, highlighting specific affected pathways.

Conclusions:

• Differential and correlation tractography are valuable tools for evaluating neuronal injuries in mTBI.
• These methods can aid in the diagnostic and prognostic assessment of mTBI patients.
• The study demonstrates the potential of advanced tractography in understanding mTBI-related white matter changes and cognitive deficits.