Intracranial iron distribution and quantification in aceruloplasminemia: A case study

Area of Science:

• Neuroimaging
• Neurodegeneration
• Medical Physics

Background:

• Aceruloplasminemia (ACP) is a rare genetic disorder causing iron accumulation in the brain and body.
• Quantitative assessment of brain iron in ACP patients using MRI has not been extensively performed.
• Understanding brain iron distribution is crucial for ACP pathophysiology and potential treatments.

Purpose of the Study:

• To quantitatively measure iron deposition in specific brain regions of an Aceruloplasminemia patient.
• To explore the relationship between brain iron metabolism and ceruloplasmin function territories.
• To establish a foundation for future quantitative iron measurements in ACP patients.

Main Methods:

• Utilized 3T MRI with a 15-channel head coil for imaging.
• Employed quantitative susceptibility mapping (QSM) and R2* relaxometry for iron quantification.
• Manually segmented gray and white matter regions for analysis.

Main Results:

• Identified significant iron increases in mammillary bodies and lateral habenulae.
• Observed severe iron overload and signal abnormalities in the hippocampus.
• Found strong correlation between R2* and QSM iron measurements (R² = 0.67).

Conclusions:

• QSM and R2* are effective quantitative tools for measuring brain iron.
• The study identified novel brain regions affected by iron overload in ACP.
• Findings may inform iron chelation therapy assessment and research into other iron-related neurodegenerative diseases.