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Neural plasticity in Parkinson's disease:a neuroimaging perspective

Neural Regeneration Research 2024年第6期19卷 1203-1205页

作者： christina andica Koji Kamagata Department of Radiology Juntendo University Graduate School of MedicineTokyoJapan Faculty of Health Data Science Juntendo UniversityChibaJapan

Parkinson's disease(PD)is a progressive neurodegenerative disorder characterized primarily by classical motor signs of bradykinesia,rigidity,tremors,and postural instability usually manifesti ng unilate rally or at least *** disease involves a loss of dopaminergic neurons projecting from the substantia nigra pars compacta to the dorsal striatum.

关键词： rigidity tremor primarily

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Advanced diffusion magnetic resonance imaging in patients with Alzheimer’s and Parkinson’s diseases

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Neural Regeneration Research 2020年第9期15卷 1590-1600页

作者： Koji Kamagata christina andica Taku Hatano Takashi Ogawa Haruka Takeshige-Amano Kotaro Ogaki Toshiaki Akashi Akifumi Hagiwara Shohei Fujita Shigeki Aoki Department of Radiology Juntendo University Graduate School of MedicineTokyoJapan Department of Neurology Juntendo University School of MedicineTokyoJapan

The prevalence of neurodegenerative diseases is increasing as human longevity increases. The objective biomarkers that enable the staging and early diagnosis of neurodegenerative diseases are eagerly anticipated. It has recently become possible to determine pathological changes in the brain without autopsy with the advancement of diffusion magnetic resonance imaging techniques. Diffusion magnetic resonance imaging is a robust tool used to evaluate brain microstructural complexity and integrity, axonal order, density, and myelination via the micron-scale displacement of water molecules diffusing in tissues. Diffusion tensor imaging, a type of diffusion magnetic resonance imaging technique is widely utilized in clinical and research settings;however, it has several limitations. To overcome these limitations, cutting-edge diffusion magnetic resonance imaging techniques, such as diffusional kurtosis imaging, neurite orientation dispersion and density imaging, and free water imaging, have been recently proposed and applied to evaluate the pathology of neurodegenerative diseases. This review focused on the main applications, findings, and future directions of advanced diffusion magnetic resonance imaging techniques in patients with Alzheimer's and Parkinson's diseases, the first and second most common neurodegenerative diseases, respectively.

关键词： Alzheimer's disease biomarkers diffusional kurtosis imaging disease progression early diagnosis free-water imaging neurites neurite orientation dispersion and density imaging Parkinson's disease

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