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Updated: Apr 23, 2026
08:36
Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI
Published on: July 12, 2012
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[Manganese-enhanced magnetic resonance imaging for studying olfactory dysfunction in rats]
Yaling Wang1, Baobin Sun2, Fengchao Zang
1Department of Otorhinolaryngology Head and Neck Surgery, Zhongda Hospital, Southeast University, Nanjing 210009, China.
Summary
Manganese-enhanced magnetic resonance imaging (MEMRI) effectively monitors olfactory function recovery in rats. The study demonstrates that the olfactory system possesses regenerative capabilities following injury, as evidenced by imaging results.
Area of Science:
- Neuroimaging
- Olfactory Neuroscience
- Regenerative Medicine
Background:
- Olfactory dysfunction can significantly impact quality of life.
- Assessing olfactory system regeneration requires sensitive and objective methods.
Purpose of the Study:
- To evaluate manganese-enhanced magnetic resonance imaging (MEMRI) for assessing olfactory function in rats.
- To investigate the regenerative potential of the olfactory system using MEMRI.
Main Methods:
- An olfactory dysfunction model was created in Sprague-Dawley rats using TritonX-100.
- Manganese-enhanced magnetic resonance imaging (MEMRI) was performed using a 7.0 T micro-MR scanner.
- Signal-to-noise ratios (SNR) in the olfactory bulb (OB) were quantified to assess olfactory function.
Main Results:
- MEMRI successfully visualized normal olfactory pathways and reversible changes during recovery.
- Olfactory bulb volume and SNR in the model group showed significant decreases post-injury, with notable recovery by day 60.
- Recovered SNR levels approached those of the normal control groups, indicating functional regeneration.
Conclusions:
- MEMRI provides an objective and effective method for detecting olfactory function and monitoring recovery.
- The olfactory system exhibits significant regenerative properties after injury, as confirmed by MEMRI.
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