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Abstract #4354

Abnormal brain perfusion pattern related to motor dysfunction and levodopa reactivity in Parkinson's disease

Qianshi Zheng1, Jiaqi Wen1, Xiaojie Duanmu1, Sijia Tan1, Weijin Yuan1, Cheng Zhou1, Haoting Wu1, Tao Guo1, Chenqing Wu1, Jianmei Qin1, Jingwen Chen1, Jingjing Wu1, Yong Zhang2, Minming Zhang1, Xiaojun Guan1, and Xiaojun Xu1
1Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China, 2GE Healthcare, Shanghai, China

Synopsis

Keywords: Parkinson's Disease, Arterial spin labelling, Parkinson’s disease; PD-related perfusion pattern; levodopa reactivity

Motivation: A kind of perfusion biomarker capable of effectively distinguishing Parkinson's disease (PD) from normal subjects and reflecting motor dysfunction and levodopa reactivity is under research.

Goal(s): To construct a stable PD-related perfusion pattern based on arterial spin labelling (ASL), and to explore levodopa reactivity of motor symptoms with the pattern.

Approach: Principal component analysis and the scaled sub-profile model (PCA-SSM) was used to construct and validate PD-related perfusion pattern, with correlation and predictive analysis.

Results: The PD-related perfusion pattern was constructed to predict the severity of motor symptoms and assess levodopa reactivity in PD patients with axial symptom.

Impact: The PD-related perfusion pattern could serve as a potential biomarker for evaluating the severity of motor symptoms and the prognosis of levodopa therapy in PD patients with axial symptom.

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Keywords