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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Diffusion tensor analysis of corpus callosum in progressive supranuclear palsy
Shoichi Ito1, Takahiro Makino, Wakako Shirai
1Department of Neurology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan. sito@faculty.chiba-u.jp
Neuroradiology
|September 10, 2008
Summary
Diffusion tensor analysis reveals anterior corpus callosum (CC1-CC2) abnormalities in progressive supranuclear palsy (PSP) patients. These findings aid in differentiating PSP from Parkinson's Disease (PD).
Area of Science:
- Neuroimaging
- Neurodegenerative Diseases
- Neuroanatomy
Background:
- Progressive supranuclear palsy (PSP) is a neurodegenerative disorder characterized by parkinsonism, ophthalmoplegia, dysphagia, and frontal dysfunction.
- The corpus callosum's integrity may reflect cerebral cortical function, with prior studies suggesting anterior corpus callosum abnormalities in PSP.
- Previous research utilized non-primate-based partitioning methods, necessitating a human-specific approach for corpus callosum analysis.
Purpose of the Study:
- To investigate diffusion tensor imaging (DTI) metrics in the human corpus callosum of PSP patients.
- To compare DTI findings in the corpus callosum between PSP patients, Parkinson's Disease (PD) patients, and healthy controls.
- To establish a novel partitioning method for the human corpus callosum in DTI analysis.
Main Methods:
- Diffusion tensor magnetic resonance imaging (DTI) was performed on seven PSP patients, 29 PD patients, and 19 healthy controls.
- The corpus callosum was partitioned into five regions (CC1-CC5) on the mid-sagittal plane using a human-specific topography.
- Fractional anisotropy (FA) and apparent diffusion coefficient (ADC) were measured in each region and analyzed for group differences.
Main Results:
- PSP patients exhibited significantly decreased FA values and increased ADC values in the anterior corpus callosum regions (CC1 and CC2).
- Receiver operating characteristic (ROC) analysis demonstrated high accuracy of CC1 FA and ADC values in distinguishing PSP from PD.
- These findings indicate specific diffusion abnormalities in the anterior corpus callosum associated with PSP.
Conclusions:
- The anterior corpus callosum, encompassing prefrontal, premotor, and supplementary motor areas, is affected in progressive supranuclear palsy.
- Diffusion tensor analysis of the corpus callosum, particularly the anterior regions, shows potential as an additional diagnostic tool for PSP.
- This study highlights the utility of a human-specific corpus callosum partitioning method in neurodegenerative disease research.
