A Comprehensive View on MRI Techniques for Imaging Blood-Brain Barrier Integrity

Area of Science:

• Neuroimaging
• Biomedical Engineering
• Neurology

Background:

• The blood-brain barrier (BBB) is crucial for brain homeostasis.
• Impaired BBB integrity is linked to neurological diseases.
• Noninvasive assessment of the BBB is vital for understanding disease mechanisms.

Purpose of the Study:

• To provide a comprehensive scientific overview of MRI techniques for assessing BBB condition.
• To discuss the potential applications of these techniques in various diseases.
• To identify necessary improvements for clinical applicability.

Main Methods:

• Review of established MRI techniques like dynamic contrast-enhanced and dynamic susceptibility contrast MRI.
• Exploration of alternative MRI methods using endogenous contrast agents (water, glucose).
• Focus on noninvasive assessment of BBB integrity.

Main Results:

• Gadolinium-based contrast agents are commonly used in standard MRI techniques.
• Novel MRI approaches utilize endogenous markers for BBB assessment.
• Current techniques offer insights into BBB breakdown in neurological conditions.

Conclusions:

• MRI provides valuable tools for noninvasive BBB assessment.
• Diverse MRI techniques exist, with ongoing development for clinical use.
• Further improvements are needed to enhance the clinical applicability of BBB-focused MRI.