Can loss of the swallow tail sign help distinguish between Parkinson Disease and the Parkinson-Plus syndromes?

Publication date: Available online 20 April 2017
Source:Clinical Imaging
Author(s): C.S. Oustwani, A.W. Korutz, M.S. Lester, Y. Kianirad, T. Simuni, T.A. Hijaz
PurposeTo determine if loss of the swallow tail sign (STS) can distinguish Parkinson Disease (PD) from the Parkinson-Plus syndromes.MethodsTwenty-five patients with PD, 21 with Parkinson-Plus syndromes, and 14 control patients were included. Presence of the STS was assessed.ResultsThe STS was present in 79% of controls, statistically greater than the PD/Parkinson-Plus patients. There was no difference in the presence of the STS between the PD/Parkinson-Plus subgroups or when scanning at 1.5 T or 3 T.ConclusionsLoss of the STS could not distinguish between PD and Parkinson-Plus patients. The STS can be identified at both 1.5 T and 3 T.



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