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- W2000275719 abstract "Background and aim It is still debated whether or not 123I-FP-CIT single photon emission computerized tomography (SPECT) is able to differentiate between Parkinson's disease and progressive supranuclear palsy (PSP). Our aim was to use SPECT semiquantitative analysis to assess the capacity of 123I-FP-CIT to characterize Parkinson's disease versus PSP. Patients and methods Twenty-one Parkinson's disease patients, 15 disease duration- and age-matched PSP patients and 20 age-matched healthy controls were included in this study. SPECT imaging was always performed at 4 h post-injection. The ratios of striatal (S) to non-specific occipital (O) binding for the entire striatum (S/O), caudate nuclei (C/O), putamina (P/O) were calculated in both the basal ganglia. The asymmetric index (AI) for the whole striatum was also calculated for Parkinson's disease and PSP. Results Compared to healthy controls, S/O, C/O and P/O were significantly reduced (P<0.001) both in Parkinson's disease (−46%, −43%, −49%, contralaterally to the most affected side; −41%, −37%, −41%, ipsilaterally) and in PSP (−58%, −57%, −59%, contralaterally; −58%, −57%, −59%, ipsilaterally). S/O, C/O and P/O ratio values were significantly (P<0.001) lower in PSP patients when compared to Parkinson's disease group. The asymmetric index (AI) was significantly higher (P<0.001) in Parkinson's disease than in PSP (AI: 23.6%±15.07% vs. 9.66%±5.83), but with an overlap between the two groups. Conclusion Our results confirm that 123I-FP-CIT SPECT is clinically useful for detecting nigrostriatal degeneration both in Parkinson's disease and PSP. Moreover, in our series, semiquantitative analysis using 123I-FP-CIT SPECT allowed Parkinson's disease and PSP to be discriminated because PSP patients presented a more severe and symmetric dopamine transporter loss, and the results for S/O were more accurate." @default.
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- W2000275719 date "2006-04-01" @default.
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- W2000275719 title "123I-FP-CIT in progressive supranuclear palsy and in Parkinsonʼs disease: a SPECT semiquantitative study" @default.
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- W2000275719 doi "https://doi.org/10.1097/01.mnm.0000202858.45522.df" @default.
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