Manganese-enhanced magnetic resonance imaging.

Area of Science:

• Neuroscience
• Biomedical Imaging
• Toxicology

Background:

• Manganese-enhanced magnetic resonance imaging (MEMRI) visualizes biological processes by exploiting manganese ions' T1 relaxation shortening effect.
• Manganese ions accumulate in tissues, entering cells via calcium channels and axonal transport, enabling high-resolution imaging in experimental animals.

Purpose of the Study:

• To provide a comprehensive overview of manganese pharmacokinetics, toxicity, and MEMRI applications in neuroscience.
• To detail experimental methods and protocols for utilizing MEMRI in both healthy and diseased animal models.

Main Methods:

• Review of manganese pharmacokinetics and toxicity mechanisms.
• Description of in vivo manganese administration and cellular uptake pathways (e.g., voltage-gated calcium channels).
• Explanation of axonal transport of manganese in the nervous system.

Main Results:

• MEMRI combines high spatial resolution MRI with functional information from manganese accumulation.
• The technique is valuable for delineating neuroanatomy, assessing brain activity, and mapping neuronal connectivity.
• Successful MEMRI requires minimizing manganese dosage due to cellular toxicity.

Conclusions:

• MEMRI is a powerful tool for neuroscience research, offering insights into brain structure and function.
• Careful consideration of manganese behavior, toxicity, and dosage is essential for reliable MEMRI studies.
• This chapter provides foundational knowledge for researchers applying MEMRI in neuroscience.