Objective:To evaluate the value of susceptibility-weighted imaging(SWI) in diagnosis of Parkinson disease (PD) and assessment of disease severity.Methods:Totally 30 PD patients and 30 healthy volunteers underwent SWL The phase values of nuclei in extracorticospinal tract were measured and compared between PD patients and healthy subjects.Results:The phase values of sustantia nigra pars compacta,globus pallidus,putamen in PD group were all significantly lower than those in control group(P＜0.01).The phase values of sustantia nigra pars compacta,globus pallidus and putamen reduced at the early stage in PD group,and then further reduced along with the severity of disease(P＜0.05).Conclusions:SWI has important clinical value in diagnosing PD and evaluating the disease severity.%目的:探讨磁敏感加权成像(SWI)在帕金森病(Parkinson disaese,PD)的诊断及其病情严重程度评估中的临床应用.方法:选取PD患者30例和健康志愿者30例,应用SWI对所有受试者锥体外系多个核团计算相位值,进行统计学分析.结果:PD组黑质致密带、苍白球、壳核相位值均低于健康志愿者组,差异有统计学意义(P＜0.01).PD组黑质致密带、苍白球、壳核相位值早期即降低,并随着病情加重,相位值进一步降低,差异有统计学意义(P＜0.05).结论:SWI技术对PD的诊断及评估具有重要的临床价值.
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