Parkinson's disease (PD) is the most common extrapyramidal disease in the elderly people, and the overall prevalence rate is increasing year by year. Quantitative susceptibility mapping (QSM) is based on the basis of susceptibility weighted imaging (SWI), and has more advantages in quantitative detection of brain iron content and display of microstructure. In this study, we tried to use QSM to analyze brain iron variations and microstructural changes in brain gray matter nuclei of patients with PD.
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