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Beta-CIT-SPECT combined with UPDRS appears to distinguish different parkinsonian conditions
H Sjøholm1, J Sundsfjord, S I Mellgren
1Department of Neurology, University Hospital, Tromsø, Norway.
Objectives:
An earlier study in l-dopa responding patients with idiopathic Parkinson's disease documented that progressive nigro-striatal degeneration shown with single photon emission computed tomography (SPECT) and the cocain analog iodine-123-beta-CIT (beta-CIT) correlated linearly with increasing motor scores in the Unified Parkinson's Disease Rating Scale (UPDRS). Here we have extended the study to include 2 tremor patients with mild parkinsonism, 2 poor l-dopa responders with parkisonism and 2 non l-dopa responders with severe parkinsonism.
Methods:
SPECT scanning was performed 20 h after injection of beta-CIT and UPDRS was done at the time of beta-CIT injection.
Results:
All patients in the present study showed less nigro-striatal degeneration in relation to UPDRS motor scores than the patients with idiopathic Parkinson's disease.
Conclusion:
The results suggest that the the combination of beta-CIT-SPECT and UPDRS motor scores has the potential to differentiate idiopathic Parkinson's disease from other parkinsonian conditions.