The application value of susceptibility weighted imaging in measuring brain iron deposition in the clinical assessment of Parkinson’s disease / 实用放射学杂志

ABSTRACT

Objective To explore the application value of susceptibility weighted imaging(SWI)in measuring brain iron deposition in the diagnosis and the assessment of Parkinson’s disease(PD).Methods Thirty cases with PD underwent head routine magnetic resonance imaging and SWI scanning.The unified PD rating scale(UPDRS)was used to assess the severity of PD.The phase values of substantia nigra (SN),red nucleus(RN),caudate nucleus (CA),globus pallidus(GP)and putamen (PUT)were measured manually on the phase map.The correlation between the phase values of the region of interest(ROI)and the UPDRS scores of PD was analyzed.Results There were no significant differences between the phase values of the less severe body side and those of the more severe body side (SN,P=0.120;RN, P=0.402;CA,P=0.196;GP,P=0.616;PUT,P =0.985).Significant negative correlations were found between the phase values of SN, CA,GP and the UPDRS Ⅲ scores,respectively (SN-UPDRS Ⅲr=-0.407,P =0.026;CA-UPDRS Ⅲr =-0.424,P =0.02;GP-UPDRS Ⅲr=-0.363,P =0.048).Significant negative correlation was found between the phase values of SN and the UPDRSⅤranks (r=-0.373 ,P =0.043 ),while the similar correlation was found between the phase values of CA and the UPDRSⅠ scores (r=-0.367,P =0.046)and the medium negative correlation was found between the phase values of GP and the gait disorder scores of UPDRS Ⅲ(r=-0.41 1,P =0.024).But no correlation was found between the phase values of other ROIs and the UPDRS scores. Conclusion SWI could quantitatively assess the brain iron deposition of the PD patient,which provided reference for clinical diagnosis and assessment of PD.