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Updated: May 27, 2026
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Assessing Cortical Cerebral Microinfarcts on High Resolution MR Images
Published on: November 20, 2015
Hippocampal microbleed on a post-mortem t(2)∗-weighted gradient-echo 7.0-tesla magnetic resonance imaging?
J De Reuck1, D Caparros-Lefebvre, V Deramecourt
1Université Lille Nord de France, Wattrelos, France.
Case Reports in Neurology
|November 29, 2011
Summary
Alzheimer
Area of Science:
- Neuroimaging
- Neuropathology
- Alzheimer's Disease Research
Background:
- Investigating the utility of advanced Magnetic Resonance Imaging (MRI) techniques in post-mortem studies.
- Examining the neuropathological correlates of MRI findings in Alzheimer's disease (AD).
Observation:
- A T(2)∗-weighted gradient-echo 7.0-T MRI of an Alzheimer patient's brain revealed hippocampal hyposignal.
- Histological examination of the corresponding brain section showed iron deposits but no overt bleeding.
- Iron deposition was noted around the granular cellular layer and within hippocampal blood vessel walls.
Findings:
- The observed MRI hyposignal was attributed to iron deposits, not microbleeds.
- This highlights a potential discrepancy between MRI-detected "microbleeds" and histological confirmation.
- The study underscores the importance of careful interpretation of MRI findings in neuropathological contexts.
Implications:
- Findings suggest caution is needed when interpreting MRI-detected microbleeds in Alzheimer's disease.
- This case report may refine diagnostic criteria and understanding of neuroimaging markers in AD.
- Further research is warranted to elucidate the nature of MRI signal changes and iron deposition in AD brains.
