MR Imaging Applications in Mild Traumatic Brain Injury: An Imaging Update

Area of Science:

• Neuroimaging
• Radiology
• Neurology

Background:

• Mild traumatic brain injury (mTBI), or concussion, impacts millions annually.
• Computed tomography lacks long-term prognostic value for mTBI.
• Conventional imaging often fails to detect subtle mTBI-related brain changes.

Purpose of the Study:

• To review advanced magnetic resonance (MR) imaging techniques for detecting subtle brain changes in mTBI.
• To explore MR's role in understanding mTBI's impact on brain structure, function, and metabolism.

Main Methods:

• Review of advanced MR imaging techniques including 3D MR imaging, susceptibility-weighted imaging, diffusion-weighted imaging, and MR spectroscopy.
• Analysis of both task-mediated and resting-state functional MR imaging (fMRI).

Main Results:

• Advanced MR techniques reveal macrostructural and microstructural brain changes in mTBI.
• Functional abnormalities detected via fMRI indicate disruptions in brain activity.
• MR spectroscopy demonstrates metabolic changes indicative of neuronal injury.

Conclusions:

• Advanced MR imaging provides crucial insights into the subtle, yet significant, effects of mTBI.
• These findings enhance understanding of mTBI's impact and pathogenesis.
• Further research may improve mTBI diagnosis, prognosis, and management.