Dementia is a progressive neurodegenerative syndrome characterized by impairment in memory and activities of daily living, altered behavior, personality, and other cognitive dysfunctions. Around 50 million people have dementia worldwide, and there are nearly 10 million new cases every year. MR elastography is a non-invasive imaging technique to measure the mechanical properties of tissues and has demonstrated sensitivity to neurodegenerative processes. In this study we utilized two neural network inversions to investigate the viscoelastic property changes in cortical regions with both tissue- and environment-weighting in various etiologies of dementia including Alzheimer’s, frontotemporal dementia, and dementia with Lewy bodies.
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