Traumatic Brain Injury: Imaging Patterns and Complications

Area of Science:

• Radiology
• Neurology
• Emergency Medicine

Background:

• Neuroimaging is crucial for managing traumatic brain injury (TBI) by identifying intracranial pathologies.
• Computed tomography (CT) is the primary imaging modality for acute TBI due to its speed and accuracy in detecting surgically relevant injuries.

Purpose of the Study:

• To delineate the roles of CT and MRI in TBI diagnosis and management.
• To guide radiologists in selecting optimal imaging modalities based on injury phase and clinical presentation.

Main Methods:

• Review of current evidence on CT and MRI utility in TBI.
• Analysis of imaging findings for primary and secondary brain injuries.
• Discussion of TBI-related herniation risk and imaging patterns.

Main Results:

• CT is the mainstay for acute TBI triage and follow-up, detecting primary and secondary injuries.
• MRI excels in identifying axonal injuries and blood products 24-48 hours post-injury but has limitations.
• MRI is recommended for normal CT with persistent deficits or in subacute/chronic TBI.

Conclusions:

• Radiologists must understand the strengths and limitations of CT and MRI in TBI.
• Optimal imaging modality selection is vital for effective TBI patient management.
• Awareness of injury patterns and herniation risk influences imaging choices.