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. 2021 Nov 15;13:770528. doi: 10.3389/fnagi.2021.770528

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Copyright © 2021 Shang, Zhang, Feng, Wu, Dou, Chen and Yin.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The correlations between the CBF-ReHo ratio and scores of disease severity. (A) Correlations for the PD-NC group between the scores of UPDRS-III (X-axis) and CBF-ReHo ratio in left putamen (Y-axis); (B) correlations for the PD-MCI group between the scores of UPDRS-III (X-axis) and CBF-ReHo ratio in left putamen (Y-axis). CBF, cerebral blood flow; ReHo, regional homogeneity; PD, Parkinson’s disease; NC, normal cognition; MCI, mild cognitive impairment; UPDRS, Unified Parkinson’s Disease Rating Scale.