Pathological Computed Tomography Features Associated With Adverse Outcomes After Mild Traumatic Brain Injury: A...

Area of Science:

• Neuroscience
• Radiology
• Trauma Surgery

Background:

• Head computed tomography (CT) is crucial for diagnosing acute traumatic brain injury (TBI).
• While CT findings in moderate to severe TBI are linked to outcomes, their prognostic importance in mild TBI (mTBI) remains unclear.
• Understanding CT features in mTBI is vital for predicting patient recovery.

Purpose of the Study:

• To identify pathological CT features associated with adverse outcomes following mTBI.
• To explore the prognostic significance of various CT findings in mTBI patients up to one year post-injury.

Main Methods:

• Longitudinal, observational study (TRACK-TBI) with external validation (CENTER-TBI).
• Enrolled patients aged 17+ with mTBI (Glasgow Coma Scale scores 13-15) undergoing head CT.
• Assessed CT features, co-occurrence, and clustering, correlating with Glasgow Outcome Scale-Extended (GOSE) scores at multiple time points.

Main Results:

• Hierarchical cluster analysis identified three main CT feature clusters: contusion/subarachnoid hemorrhage/subdural hematoma; intraventricular/petechial hemorrhage; and epidural hematoma.
• Contusion, subarachnoid, and/or subdural hematoma features were significantly associated with incomplete recovery and unfavorable outcomes up to 12 months.
• Intraventricular/petechial hemorrhage also correlated with worse outcomes, while epidural hematoma did not show this association.
• Certain CT patterns, like contusion, subarachnoid, and/or subdural hematoma, had stronger prognostic value than prior variables such as neuropsychiatric history.

Conclusions:

• Pathological CT features have distinct prognostic implications for mTBI patients up to one year post-injury.
• Specific CT injury patterns are linked to worse outcomes, highlighting the need for TBI-specific patient education and follow-up.
• These findings underscore the importance of detailed CT analysis in managing mTBI.