Relationship between Dizziness and the Core Vestibular Projection Injury in Patients with Mild Traumatic Brain Injury

Area of Science:

• Neuroscience
• Neurology
• Medical Imaging

Background:

• Dizziness after brain injury is often linked to core vestibular projection (CVP) damage.
• Previous diffusion tensor tractography (DTT) studies have not specifically investigated CVP injury in mild traumatic brain injury (TBI) patients with dizziness.

Purpose of the Study:

• To investigate the relationship between dizziness and CVP injury in patients with mild TBI using DTT.
• To determine if DTT can identify CVP abnormalities associated with dizziness in mild TBI.

Main Methods:

• Diffusion tensor tractography (DTT) was employed to analyze the core vestibular projection (CVP) in 43 mild TBI patients and 29 controls.
• Patients were categorized into two groups based on dizziness severity using the Rivermead Post-concussion Symptoms Questionnaire.

Main Results:

• Patients with higher dizziness scores exhibited significantly lower CVP tract volume (TV) compared to those with lower scores and controls (p < 0.05).
• A strong negative correlation was observed between dizziness scores and CVP TV (r = -0.711, p < 0.05).
• DTT successfully identified CVP injury in mild TBI patients with dizziness, with injury severity correlating with dizziness severity.

Conclusions:

• DTT is a valuable tool for detecting core vestibular projection (CVP) injury in patients with mild traumatic brain injury (TBI) who experience dizziness.
• The severity of dizziness in mild TBI patients is closely associated with the extent of CVP injury.